CN103841075A - Method, device and system for modulation mapping, and method and device for demapping - Google Patents
Method, device and system for modulation mapping, and method and device for demapping Download PDFInfo
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- CN103841075A CN103841075A CN201210471917.0A CN201210471917A CN103841075A CN 103841075 A CN103841075 A CN 103841075A CN 201210471917 A CN201210471917 A CN 201210471917A CN 103841075 A CN103841075 A CN 103841075A
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Abstract
The embodiment of the invention discloses a method for modulation mapping.The method comprises: obtaining data to be modulated which contain n modulation bits; dividing the modulated data into the first group of data and the second group of data, when n is an even number; searching a first vector value comprising I branch signals andcorresponding to the first group of data and a second vector value comprising Q branch signals and corresponding to the second group of data from the first constellation, when the first group of data and the second group of data are the table look-up addresses; merging the first vector value and the second vector value for obtaining the first mapping signals; performing QAM on the first mapping signals, and obtaining the first 2nQAM modulated signals; and transmitting the 2nQAM modulated signals to a receiving end. Correspondingly the embodiment of the invention discloses a modulation device and a modulation mapping system, and a method and a device for demapping. According to embodiment of the invention, the depth of a look-up table is reduced during mapping and demapping, thereby saving RAM resources.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method, equipment and system of modulating mapping, the method and apparatus of demapping.
Background technology
Along with the arrival in 3G epoch, the data volume of wireless traffic increases day by day, and the contradiction between the business throughput demand of finite bandwidth and rapid growth is constantly aggravated, and operator wishes in finite bandwidth, to promote as far as possible business throughput.Direct reply means of operator are exactly to adopt the more modulation technique of high-order, rise to 1024QAM from 256 quadrature amplitude modulation (Quadrature Amplitude Modulation, QAM), even can be promoted to the more QAM of high-order.
All possible a kind of modulation system mapping relations are signed on a complex plane, just can obtain the planisphere of this modulation system, the single mapping symbols point on planisphere is referred to as constellation point.Obviously, 16QAM has 16 constellation point, and 256QAM has 256 constellation point.Along with the increase of order of modulation, need constellation point to be processed to increase so thereupon.
In existing modulation technique, modulating equipment is based on random asccess memory (random access memory, RAM) look-up table of structure, in this look-up table, store all mapping symbols in the modulation system that this look-up table is corresponding, in modulation mapping process, using Bit data as the address of tabling look-up, from this look-up table, read mapping symbols corresponding to this address, this mapping symbols is specially a vector that comprises real part and imaginary part, and its real part is called I tributary signal, and its imaginary part is called Q tributary signal.It constructs a look-up table in RAM demodulated equipment, in this look-up table, store all mapping symbols corresponding bit data in the modulation system that this look-up table is corresponding, when demodulated equipment receives after the mapping symbols of modulating equipment transmitting, carry out demapping, in demapping process, using the mapping symbols that receives as the address of tabling look-up, from this look-up table, read Bit data corresponding to this address.
In above-mentioned technology, the degree of depth of tabling look-up in mapping process is conciliate in modulation mapping is all 2
n, wherein 2
nfor the exponent number in modulation system, as in 256QAM 2
nbe 256, the resource that expends like this RAM in mapping process is conciliate in modulation mapping is very large.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus of modulating mapping, and the method and apparatus of demapping can reduce modulation mapping and conciliate the degree of depth of tabling look-up in mapping process, to save the resource of RAM.
First aspect present invention provides a kind of method of modulating mapping, comprising:
Obtain and treat modulating data, described in treat that modulating data comprises n modulation bit;
In the time that n is even number, described in inciting somebody to action according to the first division rule setting in advance, treat that modulating data is divided into first group of data and second group of data;
Using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data;
Using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data;
Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols;
Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal;
Send the described the 1
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
In the possible implementation of the first, described using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data and comprise:
Selection address using described first group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual I tributary signal, select an I tributary signal corresponding with described first group of data, and using the I tributary signal of described selection as primary vector value;
Described using described second group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise Q tributary signal corresponding with described second group of data and comprise:
Selection address using described second group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual Q tributary signal, select a Q tributary signal corresponding with described first group of data, and using the Q tributary signal of described selection as secondary vector value.
In conjunction with first aspect or the possible implementation of the first, in the possible implementation of the second, after obtaining and treating modulating data, described method also comprises: in the time that n is odd number, treat that modulating data is divided into the 3rd group of data and the 4th group of data, wherein according to the second division rule that set in advance described in inciting somebody to action, described the 3rd group of data comprise the coset bit of n-t bit, described the 4th group of data comprise the coded-bit of t bit, and described t is greater than zero integer, and t < n;
Using described the 3rd group of data as the address of tabling look-up, from the second planisphere that comprises mapping symbols first arranging, find out and described the 3rd group of the second mapping symbols that data are corresponding; Wherein, described the second planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols;
Using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, described correction offset vector comprises I tributary signal and Q tributary signal;
Described by the second mapping symbols and the addition of described correction offset vector, obtain the 3rd mapping symbols;
Described the 3rd mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 22
nqam signal;
Send the described the 22
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
In conjunction with the possible implementation of the second, in the third possible implementation, after treating that modulating data is divided into the 3rd group of data and the 4th group of data described in described the second division rule general according to setting in advance, described using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, before described correction offset vector comprises I tributary signal and Q tributary signal, described method also comprises:
Described the 4th group of data are carried out to Gray code;
Described using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, described correction offset vector comprises I tributary signal and Q tributary signal comprises:
Using the result of described Gray code as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out the correction offset vector corresponding with described result, described correction offset vector comprises I tributary signal and Q tributary signal.
In conjunction with the possible implementation of the second, in the 4th kind of possible implementation, described using described the 3rd group of data as the address of tabling look-up, from the second planisphere that comprises mapping symbols first arranging, find out second mapping symbols corresponding with described the 3rd group of data and comprise:
Selection address using described the 3rd group of data as the logical circuit of a multiselect one is selected and described the 3rd group of the second mapping symbols that data are corresponding in preset reference mapping symbols in each region from described the second planisphere.
Second aspect present invention provides a kind of method of demapping, comprising:
Receive transmitting terminal and send 2
nqam signal;
To described 2
nqam signal carries out demodulation, obtains mapping symbols;
In the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
The secondary vector of the Q tributary signal that described the first mapping symbols is comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere;
Described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
In the possible execution mode of the first, in the time that n is odd number, to described 2
nqam signal carries out demodulation, and after obtaining mapping symbols, described method also comprises:
Gray code is carried out in the low t/2 position of the I tributary signal of described mapping symbols and Q tributary signal and obtain coded-bit data;
The translation track that the 4th planisphere that comprises Bit data setting in advance is moved to the preset reference mapping symbols in described region with the initial point mapping symbols in the region of described the 4th planisphere carries out translation; Wherein, described the 4th planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols, t is natural number, and t < n;
The I tributary signal of described mapping symbols and Q tributary signal are removed respectively to the division arithmetic that t rounds, the I tributary signal of the result of described division arithmetic is multiplied by the multiplying of N, and using the result of the Q tributary signal of the result of described multiplying and described division arithmetic as the address of tabling look-up, in the 4th planisphere from described translation, find out coset Bit data; Wherein, described N is the quantity of the comparing data that comprises a line that comparing data is maximum in described the 4th planisphere;
Described coded-bit data and described coset Bit data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
Third aspect present invention provides a kind of modulating equipment, comprising: acquiring unit, the first division unit, the first lookup unit, the second lookup unit, merge cells, the first modulating unit and the first transmitting element, wherein:
Described acquiring unit, treats modulating data for obtaining, described in treat that modulating data comprises n modulation bit;
Described the first division unit, in the time that n is even number, treats that modulating data be divided into first group data and second group data described in inciting somebody to action according to the first division rule setting in advance;
Described the first lookup unit for using described first group of data as the address of tabling look-up, finds out the primary vector value that comprise I tributary signal corresponding with described first group of data from preset the first planisphere that comprises mapping symbols;
Described the second lookup unit for using described second group of data as the address of tabling look-up, finds out the secondary vector value that comprise Q tributary signal corresponding with described second group of data from described the first planisphere;
Described merge cells, for described primary vector value and described secondary vector value are merged, obtains the first mapping symbols;
Described the first modulating unit, for described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtains the 1
nqam signal;
Described the first transmitting element, for sending the described the 1
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
In the possible implementation of the first, described the first lookup unit is also for the selection address using described first group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual I tributary signal, select an I tributary signal corresponding with described first group of data, and using the I tributary signal of described selection as primary vector value;
Described the second lookup unit is also for the selection address using described second group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual Q tributary signal, select a Q tributary signal corresponding with described first group of data, and using the Q tributary signal of described selection as secondary vector value.
In the third aspect or the possible implementation of the first, in the possible implementation of the second, described equipment also comprises:
The second division unit, for in the time that n is odd number, described in inciting somebody to action according to the second division rule that set in advance, treat that modulating data is divided into the 3rd group of data and the 4th group of data, wherein, described the 3rd group of data comprise the coset bit of n-t bit, described the 4th group of data comprise the coded-bit of t bit, and described t is greater than zero integer, and t < n;
The 3rd lookup unit for using described the 3rd group of data as the address of tabling look-up, finds out and described the 3rd group of the second mapping symbols that data are corresponding from the second planisphere that comprises mapping symbols first arranging; Wherein, described the second planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols;
The 4th lookup unit, be used for using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, described correction offset vector comprises I tributary signal and Q tributary signal;
Adder unit, is added the second mapping symbols and described correction offset vector for described, obtains the 3rd mapping symbols;
The second modulating unit, for described the 3rd mapping symbols is carried out to quadrature amplitude modulation QAM, obtains the 22
nqam signal;
The second transmitting element, for sending the described the 22
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
In the possible implementation of the second, in the third possible implementation, described equipment also comprises:
Coding unit, for carrying out Gray code by described the 4th group of data;
Described the 4th lookup unit is also for using the result of described Gray code as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out the correction offset vector corresponding with described result, described correction offset vector comprises I tributary signal and Q tributary signal.
In the possible implementation of the second, in the 4th kind of possible implementation, described the 3rd lookup unit is also for the selection address using described the 3rd group of data as the logical circuit of a multiselect one, from described the second planisphere, in each region, in preset reference mapping symbols, selects and described the 3rd group of the second mapping symbols that data are corresponding.
A kind of demodulated equipment that fourth aspect present invention provides, comprising: receiving element, demodulating unit, the first lookup unit, the second lookup unit and the first concatenation unit, wherein:
Described receiving element, sends 2 for receiving transmitting terminal
nqam signal;
Described demodulating unit, for to described 2
nqam signal carries out demodulation, obtains mapping symbols;
Described the first lookup unit, for in the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
Described the second lookup unit as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal for the secondary vector of Q tributary signal that described the first mapping symbols is comprised from described the 3rd planisphere;
Described the first concatenation unit, for described first group of data and described second group of data are spliced, obtains described 2
nthe initial data that qam signal is corresponding.
In the possible implementation of the first, described equipment also comprises:
Coding unit, in the time that n is odd number, carries out Gray code by the low t/2 position of the I tributary signal of described mapping symbols and Q tributary signal and obtains coded-bit data;
Translation unit, carries out translation for the translation track that the 4th planisphere that comprises Bit data setting in advance is moved to the preset reference mapping symbols in described region with the initial point mapping symbols in the region of described the 4th planisphere; Wherein, described the 4th planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols, t is natural number, and t < n;
The 3rd lookup unit, for the I tributary signal of described mapping symbols and Q tributary signal are removed respectively to the division arithmetic that t rounds, the I tributary signal of the result of described division arithmetic is multiplied by the multiplying of N, and using the result of the Q tributary signal of the result of described multiplying and described division arithmetic as the address of tabling look-up, in the 4th planisphere from described translation, find out coset Bit data; Wherein, described N is the quantity of the comparing data that comprises a line that comparing data is maximum in described the 4th planisphere;
The second concatenation unit, for described coded-bit data and described coset Bit data are spliced, obtains described 2
nthe initial data that qam signal is corresponding.
Fifth aspect present invention provides a kind of system of modulating mapping, comprising: above-mentioned modulating equipment and above-mentioned demodulated equipment.
In technique scheme, when in the time that the data of equipment are even number bit, described in inciting somebody to action, treat that modulating data is divided into first group of data and second group of data; Respectively using first group of data and second group of data as the address of tabling look-up, from find out the primary vector value that comprise I tributary signal corresponding with described first group of data and the secondary vector value that comprise Q tributary signal corresponding with described second group of data from preset the first planisphere that comprises mapping symbols; Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols; Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal; Send the described the 1
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.To carry out like this tabling look-up for twice, and can reduce modulation mapping and conciliate the degree of depth of tabling look-up in mapping process, to save the resource of RAM.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic flow sheet of a kind of method of modulating mapping provided by the invention;
Fig. 2 is the schematic flow sheet of the method for another kind of modulation mapping provided by the invention;
Fig. 3 is the schematic diagram of the planisphere in the embodiment of the present invention;
Fig. 4 is the schematic diagram of the another kind of planisphere in the embodiment of the present invention;
Fig. 5 is the schematic flow sheet of the method for a kind of demapping provided by the invention;
Fig. 6 is the schematic flow sheet of the method for another kind of demapping provided by the invention;
Fig. 7 is the structural representation of a kind of modulating equipment provided by the invention;
Fig. 8 is the structural representation of another kind of modulating equipment provided by the invention;
Fig. 9 is the structural representation of a kind of demodulated equipment provided by the invention;
The structural representation of Figure 10 another kind of demodulation provided by the invention;
Figure 11 is the structural representation of a kind of system of modulating mapping provided by the invention;
Figure 12 is the structural representation of another kind of modulating equipment provided by the invention;
Figure 13 is the structural representation of another kind of modulating equipment provided by the invention;
Figure 14 is the structural representation of another kind of demodulated equipment provided by the invention;
The structural representation of Figure 15 another kind of demodulation provided by the invention;
Figure 16 is the structural representation of the system of another kind of modulation mapping provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the schematic flow sheet of a kind of method of modulating mapping that the embodiment of the present invention provides, and as shown in Figure 1, comprising:
101, obtain and treat modulating data, described in treat that modulating data comprises n modulation bit;
102,, in the time that n is even number, described in inciting somebody to action according to the first division rule setting in advance, treat that modulating data is divided into first group of data and second group of data;
103,, using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data;
104,, using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data;
105, described primary vector value and described secondary vector value are merged, obtain the first mapping symbols;
106, described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal;
107, send the described the 1
nqam signal to receiving terminal so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
When receiving terminal receives 2
nqam signal is treated modulating data described in just can demodulating.
Optionally, can not there is not sequencing in the performed time of step 103 and step 104, as step 103 and step 104 can be carried out simultaneously,
Optionally, suppose to treat that modulating data is 6 bits, step 101 just can will treat that 3 bits in modulating data are divided into first group of data, are divided into second group of data by the data of other 3 bits.The degree of depth that step 103 is tabled look-up is like this just 2
3, and the degree of depth that step 104 is tabled look-up is 2
3.The degree of depth 2 of tabling look-up compared to existing technology
6, reduced the degree of depth of tabling look-up.
As the optional execution mode of one, the equipment of realizing this example can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, when in the time that the amount of bits of modulating data is even number, the data of needs modulation mapping are divided into first group of data and second group of data, using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data, using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data; Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols; Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal; Send described 2
nqam signal to receiving terminal so that described receiving terminal is treated modulating data described in obtaining by data demodulates.Can reduce like this modulation mapping and conciliate the degree of depth of tabling look-up in mapping process, to save the resource of RAM.
Fig. 2 is that the another kind that the embodiment of the present invention provides is modulated the schematic flow sheet of the method for mapping, and as shown in Figure 2, described method comprises:
201, obtain and treat modulating data, described in treat that modulating data comprises n modulation bit.
202,, in the time that n is even number, described in inciting somebody to action according to the first division rule setting in advance, treat that modulating data is divided into first group of data and second group of data.
As the optional execution mode of one, in the mapping symbols that above-mentioned the first division rule can comprise based on the first planisphere, the orthogonal property of I and Q tributary signal sets in advance.For example: for example above-mentioned the first planisphere planisphere as shown in Figure 2, treat that modulating data comprises these six Bit datas of ABCDEF, above-mentioned like this first division rule just can, by equally spaced Bit data in above-mentioned data as ACE is divided into first group of data, be divided into second group of data by other equally spaced Bit data BDF.
203,, using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data.
Optionally, described in the first planisphere that comprises mapping symbols that sets in advance specifically can be as shown in Figure 3 planisphere, the middle constellation point of seat figure is mapping symbols, the constellation point in this planisphere is square full symmetric in four resemble now.
As the optional execution mode of one, step 203 can comprise:
Selection address using described first group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual I tributary signal, select an I tributary signal corresponding with described first group of data, and using the I tributary signal of described selection as primary vector value.
Optionally, suppose to treat that modulating data is that bit number is n, wherein n is even number, and the degree of depth that step 203 is tabled look-up is just 2
n/2, specifically from 2
n/2in individual I tributary signal, select an I tributary signal.Wherein I tributary signal is specifically as follows the coordinate figure of the middle abscissa of described planisphere, or the coordinate figure of ordinate.
204,, using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data.
As the optional execution mode of one, step 204 can comprise:
Selection address using described second group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual Q tributary signal, select a Q tributary signal corresponding with described first group of data, and using the Q tributary signal of described selection as secondary vector value.
Optionally, suppose to treat that modulating data is that bit number is n, wherein n is even number, and the degree of depth that step 204 is tabled look-up is just 2
n/2, specifically from 2
n/2in individual Q tributary signal, select a Q tributary signal.Wherein, when described I tributary signal is specially the coordinate figure of the middle abscissa of described planisphere, Q tributary signal is just the coordinate figure of ordinate in described planisphere so; When described I tributary signal is specially the coordinate figure of the middle ordinate of described planisphere, Q tributary signal is just the coordinate figure of abscissa in described planisphere so.
205, described primary vector value and described secondary vector value are merged, obtain the first mapping symbols;
206, described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal;
207, send the described the 1
nqam signal to receiving terminal so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
When receiving terminal receives above-mentioned 2
nqam signal, just can know this 2
nthe amount of bits of the data that qam signal is corresponding is even number or odd number, in the time being even number, with regard to adopting the demodulation method that even number Bit data is corresponding to carry out demapping, in the time being odd number, just adopt the method for the demodulation that odd number Bit data is corresponding to carry out demapping.
208, in the time that n is odd number, described in inciting somebody to action according to the second division rule that set in advance, treat that modulating data is divided into the 3rd group of data and the 4th group of data, wherein, described the 3rd group of data comprise the coset bit of n-t bit, described the 4th group of data comprise the coded-bit of t bit, described t is greater than zero integer, and t < n.
As the optional execution mode of one, the second planisphere that above-mentioned the second division rule can provide based on the embodiment of the present invention sets in advance, can arrange according to the reference mapping symbols in each region in the second planisphere, in the second planisphere, the reference mapping symbols in each region is also just different with the second division rule arranging, wherein, in the second planisphere, the reference mapping symbols in each region residing public position in each region is identical, and in each region, only has one with reference to mapping symbols.For example: the second planisphere as shown in Figure 4, the mapping title in the lower left corner that the reference mapping symbols in each region is each region, for example: in Fig. 4, circle encloses the mapping symbols of coming, such the second division rule just can will be treated least significant bit (the Least Significant Bit of modulation bit data, and highest significant position (Most Significant Bit LSB), MSB) divide, can be the 4th group of data by the Bit data of the LSB that treats modulating data, the comparing data of encoding, be the 3rd group of data by the Bit data of the MSB that treats modulating data, be coset Bit data, like this with coset Bit data as the address of tabling look-up, for example in just can the second planisphere, find in the second planisphere in each region, with reference to (selecting a mapping symbols in mapping symbols, select Fig. 4 circle and enclose the mapping symbols of coming), and it is non-with reference to mapping symbols with regard to selecting one in the above-mentioned mapping symbols region of selecting as the address of tabling look-up by coded-bit data.
209,, using described the 3rd group of data as the address of tabling look-up, from the second planisphere that comprises mapping symbols first arranging, find out and described the 3rd group of the second mapping symbols that data are corresponding; Wherein, described the second planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols.
As the optional execution mode of one, said n can be different and different according to planisphere with t, planisphere as shown in Figure 4, and 16 constellation point of each district inclusion in Fig. 4, so above-mentioned t just can equal 4, n and equal 4 quantitative values that add region in Fig. 4.
As the optional execution mode of one, step 209 can comprise:
Using the 3rd group of data as the selection address of the logical circuit of a multiselect one, from described the second planisphere, in each region, in preset reference mapping symbols, select and described the 3rd group of the second mapping symbols that data are corresponding.
Step 209 can be just 2 like this
n-tin individual mapping symbols, search a mapping symbols, the degree of depth of tabling look-up is 2
n-t.
210, using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, described correction offset vector comprises I tributary signal and Q tributary signal.
Step 210 can be just 2 like this
tin individual mapping symbols, search a mapping symbols, the degree of depth of tabling look-up is 2
t.For example: the mapping symbols that step 209 finds out is that in Fig. 4, circle encloses the mapping title of coming, step 210 is just searched in the region at this mapping symbols place so, from this region, find out a mapping symbols, using the mapping symbols finding out as revising offset vector.
As the optional execution mode of one, after step 208, before step 210, described method also comprises:
Described the 4th group of data are carried out to Gray code;
Optionally, in this execution mode, step 210 can comprise:
Using the result of described Gray code as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out the correction offset vector corresponding with described result, described correction offset vector comprises I tributary signal and Q tributary signal.
211, described by the second mapping symbols and the addition of described correction offset vector, obtain the 3rd mapping symbols;
212, described the 3rd mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 22
nqam signal;
213, send the described the 22
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
When in the time that the amount of bits of modulating data is odd number, said n is odd number, in modulation mapping process, only need to carry out one time 2 the second planisphere
n-tthe degree of depth table look-up, and one time 2
tthe degree of depth table look-up, 2 in compared to existing technology
n, the present invention can reduce the degree of depth of tabling look-up, to save the resource of RAM.
As the optional execution mode of one, the equipment of realizing this example can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, can realize when in the time that the amount of bits of modulating data is even number or odd number, can adopt different mapping modes, and can also reduce the degree of depth of tabling look-up of modulation mapping, can also make demapping process reduce the degree of depth of tabling look-up, to save the resource of RAM.
Fig. 5 is the schematic flow sheet of the method for a kind of demapping of providing of the embodiment of the present invention, as shown in Figure 5, comprising:
301, receive transmitting terminal and send 2
nqam signal.
302, to described 2
nqam signal carries out demodulation, obtains mapping symbols.
303,, in the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data.
The primary vector of the Q tributary signal 304, described mapping symbols being comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere.
305, described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
It should be noted that, the 3rd planisphere that the present embodiment provides, as to scheme the first planisphere that embodiment provides be above one to one, in the first planisphere, constellation figure represents mapping symbols, what the first planisphere used for example tables look-up address, for data (: Bit data), what use that this address of tabling look-up finds out from the first planisphere is a mapping symbols, and constellation point in the 3rd planisphere represents data, what the 3rd planisphere used tables look-up address for mapping symbols, what use that this address of tabling look-up finds out from the first planisphere is data (for example: Bit data).The structure of the 3rd planisphere can for example, with reference to the structure of the first planisphere (: shown in Fig. 3).
Optionally, suppose that described first group of data are t bit, second group of data is n-t bit, initial data is just n bit, like this step 303 and 304 respectively demapping go out first group of data and second group of data, go out n Bit data with demapping of prior art compared with, reduced the degree of depth of tabling look-up.
As the optional execution mode of one, the equipment of realizing this example can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, receive transmitting terminal and send 2
nqam signal, to described 2
nqam signal carries out demodulation, obtains mapping symbols; In the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data; The primary vector of the Q tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere; Described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.Can reduce like this degree of depth of tabling look-up in demapping process, to save the resource of RAM.
Fig. 6 is the schematic flow sheet of the method for a kind of demapping of providing of the embodiment of the present invention, as shown in Figure 6, comprising:
401, receive transmitting terminal and send 2
nqam signal.
402, to described 2
nqam signal carries out demodulation, obtains mapping symbols.
403,, in the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
The primary vector of the Q tributary signal 404, described the first mapping symbols being comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere.
Optionally, when data corresponding to described I tributary signal are specially the coordinate figure of the middle abscissa of described the 3rd planisphere, the data that Q tributary signal is corresponding are so just the coordinate figure of ordinate in described the 3rd planisphere; When data corresponding to described I tributary signal are specially the coordinate figure of the middle ordinate of described planisphere, the data that Q tributary signal is corresponding are so just the coordinate figure of abscissa in described planisphere.
405, described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
Optionally, due to the I of mapping symbols and the orthogonal property of Q tributary signal, step 405 can be that first group of data and second group of data are inserted to splicing in turn,, when first group of data is ACE, when second group of data is BDF, step 405 just obtains the data of an ABCDEF.
406,, in the time that n is odd number, Gray code is carried out in the low t/2 position of the I tributary signal of described the first mapping symbols and Q tributary signal and obtain coded-bit data;
Optionally, there is calculus of differences relation in low t/2 position and the coded-bit data of above-mentioned mapping symbols, just low two corresponding Bit datas of the I tributary signal of described mapping symbols and Q tributary signal can be restored like this by step 406.If coded-bit data are four Bit datas, step 406 is just carried out Gray code and is obtained coded-bit data low two of above-mentioned mapping title.
407, the translation track that the 4th planisphere that comprises Bit data setting in advance is moved to the preset reference mapping symbols in described region with the initial point mapping symbols in the region of described the 4th planisphere carries out translation; Wherein, described the 4th planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols, t is natural number, and t < n;
Optionally, above-mentioned the 4th planisphere is corresponding with the second constellation that embodiment provides above, and the relation of both correspondences can be with reference to the 3rd planisphere of foregoing description and the corresponding relation of the first planisphere.
Optionally, the initial point mapping symbols in the above-mentioned region with described the 4th planisphere moves to the translation rail of described region with reference to mapping title, this region can be arbitrary region in the 4th planisphere, because the position of region in the 4th planisphere is fixing, and the position of the reference mapping symbols in each region is also fixed, to move to the translation track of the reference mapping title in this region be all the same to the initial point mapping symbols in no matter which region like this.For example: as shown in Figure 4, in Fig. 4, circle encloses the reference mapping symbols that next mapping title is a certain region to the structure of the 4th planisphere, and step 407 is just with the trajectory-offset with reference to mapping symbols by the initial point mapping symbols translation in this region like this.The mapping symbols of the central point that above-mentioned initial point mapping symbols is each region.
408, the I tributary signal of described mapping symbols and Q tributary signal are removed respectively to the division arithmetic that t rounds, the I tributary signal of the result of described division arithmetic is multiplied by the multiplying of N, and using the result of the Q tributary signal of the result of described multiplying and described division arithmetic as the address of tabling look-up, in the 4th planisphere from described translation, find out coset Bit data; Wherein, described N is the quantity of the comparing data that comprises a line that comparing data is maximum in described the 4th planisphere.
Optionally, described in the address of tabling look-up be specifically as follows I ' × N+Q ', wherein, I ' is the I tributary signal after described division arithmetic, Q ' is Q tributary signal after described division arithmetic.
409, described coded-bit data and described coset Bit data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
As the optional execution mode of one, in the time obtaining said n, the planisphere adopting just can know the above-mentioned mapping symbols of demodulated equipment modulation mapping according to the value of n time, 2
nqam signal corresponding amount of bits while being odd number, be that n is while being odd number, so just can learn the above-mentioned mapping symbols of modulating equipment modulation mapping by the 4th planisphere time, to initial data (, what above-described embodiment was described treats modulating data) rule of dividing, all the people present schemes the second corresponding planisphere while being the planisphere shown in Fig. 4, demodulated equipment just can learn that modulating equipment is that the Bit data of the LSB of initial data is divided into coded-bit data, the Bit data of MSB is above divided into coset Bit data, as the DEFG in ABCDEFG is divided into coded-bit data, ABC is divided into coset Bit data, step 309 just can be spliced coded-bit data after coset Bit data like this, to obtain the initial data of ABCDEFG.
As the optional execution mode of one, the equipment of realizing this example can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, can realize when mapping symbols corresponding the amount of bits of data while being even number or odd number, can adopt different demapping modes, and can also reduce the degree of depth of tabling look-up in demapping process, to save the resource of RAM.
Be apparatus of the present invention embodiment below, apparatus of the present invention embodiment is for carrying out the method for the inventive method embodiment mono-to four realization, for convenience of explanation, only show the part relevant to the embodiment of the present invention, concrete ins and outs do not disclose, and please refer to the embodiment of the present invention one, embodiment bis-, implement three and embodiment tetra-.
Fig. 7 is the structural representation that the embodiment of the present invention provides a kind of modulating equipment, as shown in Figure 7, comprise: acquiring unit 501, the first division unit 502, the first lookup unit 503, the second lookup unit 504, merge cells 505, the first modulating unit 506 and the first transmitting element 507, wherein:
Acquiring unit 501, treats modulating data for obtaining, described in treat that modulating data comprises n modulation bit;
The first division unit 502, in the time that n is even number, treats that modulating data be divided into first group data and second group data described in inciting somebody to action according to the first division rule setting in advance;
The first lookup unit 503 for using described first group of data as the address of tabling look-up, finds out the primary vector value that comprise I tributary signal corresponding with described first group of data from preset the first planisphere that comprises mapping symbols;
The second lookup unit 504 for using described second group of data as the address of tabling look-up, finds out the secondary vector value that comprise Q tributary signal corresponding with described second group of data from described the first planisphere;
Merge cells 505, for described primary vector value and described secondary vector value are merged, obtains the first mapping symbols;
The first modulating unit 506, for described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtains the 1
nqam signal;
The first transmitting element 507, for sending the described the 1
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
When receiving terminal receives 2
nqam signal is treated modulating data described in just can demodulating.
Optionally, suppose to treat that modulating data is 6 bits, step 101 just can will treat that 3 bits in modulating data are divided into first group of data, are divided into second group of data by the data of other 3 bits.The degree of depth that such the first lookup unit 53 is tabled look-up is just 2
3, and the degree of depth that the second lookup unit 54 is tabled look-up is 2
3.The degree of depth 2 of tabling look-up compared to existing technology
6, reduced the degree of depth of tabling look-up.
As the optional execution mode of one, described modulating equipment can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, when in the time that the amount of bits of modulating data is even number, the data of needs modulation mapping are divided into first group of data and second group of data, using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data, using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data; Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols; Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal; Send described 2
nqam signal to receiving terminal so that described receiving terminal is treated modulating data described in obtaining by data demodulates.Can reduce like this modulation mapping and conciliate the degree of depth of tabling look-up in mapping process, to save the resource of RAM.
Fig. 8 is the structural representation of the another kind of modulating equipment that provides of the embodiment of the present invention, as shown in Figure 8, comprise: acquiring unit 601, the first division unit 602, the first lookup unit 603, the second lookup unit 604, merge cells 605, the first modulating unit 606, the first transmitting element 607, the second division unit 608, the 3rd lookup unit 609, the 4th lookup unit 610, adder unit 611, the second modulating unit 612 and the second transmitting element 613, wherein:
Acquiring unit 601, treats modulating data for obtaining, described in treat that modulating data comprises n modulation bit;
The first division unit 602, in the time that n is even number, treats that modulating data be divided into first group data and second group data described in inciting somebody to action according to the first division rule setting in advance.
As the optional execution mode of one, in the mapping symbols that above-mentioned the first division rule can comprise based on the first planisphere, the orthogonal property of I and Q tributary signal sets in advance.For example: for example above-mentioned the first planisphere planisphere as shown in Figure 2, treat that modulating data comprises these six Bit datas of ABCDEF, above-mentioned like this first division rule just can, by equally spaced Bit data in above-mentioned data as ACE is divided into first group of data, be divided into second group of data by other equally spaced Bit data BDF.
The first lookup unit 603 for using described first group of data as the address of tabling look-up, finds out the primary vector value that comprise I tributary signal corresponding with described first group of data from preset the first planisphere that comprises mapping symbols.
Optionally, described in the first planisphere that comprises mapping symbols that sets in advance specifically can be as shown in Figure 3 planisphere, the middle constellation point of seat figure is mapping symbols, the constellation point in this planisphere is square full symmetric in four resemble now.
As the optional execution mode of one, the first lookup unit 603 can also be used for the selection address using described first group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual I tributary signal, select an I tributary signal corresponding with described first group of data, and using the I tributary signal of described selection as primary vector value.
Optionally, suppose to treat that modulating data is that bit number is n, wherein n is even number, and the degree of depth that the first lookup unit 603 is tabled look-up is just 2
n/2, specifically from 2
n/2in individual I tributary signal, select an I tributary signal.Wherein I tributary signal is specifically as follows the coordinate figure of the middle abscissa of described planisphere, or the coordinate figure of ordinate.
The second lookup unit 604 for using described second group of data as the address of tabling look-up, finds out the secondary vector value that comprise Q tributary signal corresponding with described second group of data from described the first planisphere.
As the optional execution mode of one, the second lookup unit 604 can also be used for the selection address using described second group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual Q tributary signal, select a Q tributary signal corresponding with described first group of data, and using the Q tributary signal of described selection as secondary vector value.
Optionally, suppose to treat that modulating data is that bit number is n, wherein n is even number, and the degree of depth that the second lookup unit 604 is tabled look-up is just 2
n/2, specifically from 2
n/2in individual Q tributary signal, select a Q tributary signal.Wherein, when described I tributary signal is specially the coordinate figure of the middle abscissa of described planisphere, Q tributary signal is just the coordinate figure of ordinate in described planisphere so; When described I tributary signal is specially the coordinate figure of the middle ordinate of described planisphere, Q tributary signal is just the coordinate figure of abscissa in described planisphere so.
Merge cells 605, for described primary vector value and described secondary vector value are merged, obtains the first mapping symbols;
The first modulating unit 606, for described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtains the 1
nqam signal;
The first transmitting element 607, for sending the described the 1
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
When receiving terminal receives above-mentioned 2
nqam signal, just can know this 2
nthe amount of bits of the data that qam signal is corresponding is even number or odd number, in the time being even number, with regard to adopting the demodulation method that even number Bit data is corresponding to carry out demapping, in the time being odd number, just adopt the method for the demodulation that odd number Bit data is corresponding to carry out demapping.
The second division unit 608, for in the time that n is odd number, described in inciting somebody to action according to the second division rule that set in advance, treat that modulating data is divided into the 3rd group of data and the 4th group of data, wherein, described the 3rd group of data comprise the coset bit of n-t bit, described the 4th group of data comprise the coded-bit of t bit, and described t is greater than zero integer, and t < n.
As the optional execution mode of one, the second planisphere that above-mentioned the second division rule can provide based on the embodiment of the present invention sets in advance, can arrange according to the reference mapping symbols in each region in the second planisphere, in the second planisphere, the reference mapping symbols in each region is also just different with the second division rule arranging, wherein, in the second planisphere, the reference mapping symbols in each region residing public position in each region is identical, and in each region, only has one with reference to mapping symbols.For example: the second planisphere as shown in Figure 4, the mapping title in the lower left corner that the reference mapping symbols in each region is each region, for example: in Fig. 4, circle encloses the mapping symbols of coming, such the second division rule just can be divided the LSB and the MSB that treat modulation bit data, can be the 4th group of data by the Bit data of the LSB that treats modulating data, the comparing data of encoding, be the 3rd group of data by the Bit data of the MSB that treats modulating data, be coset Bit data, like this with coset Bit data as the address of tabling look-up, for example in just can the second planisphere, find in the second planisphere in each region, with reference to (selecting a mapping symbols in mapping symbols, select Fig. 4 circle and enclose the mapping symbols of coming), and it is non-with reference to mapping symbols with regard to selecting one in the above-mentioned mapping symbols region of selecting as the address of tabling look-up by coded-bit data.
The 3rd lookup unit 609 for using described the 3rd group of data as the address of tabling look-up, finds out and described the 3rd group of the second mapping symbols that data are corresponding from the second planisphere that comprises mapping symbols first arranging; Wherein, described the second planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols.
As the optional execution mode of one, said n can be different and different according to planisphere with t, planisphere as shown in Figure 4, and 16 constellation point of each district inclusion in Fig. 4, so above-mentioned t just can equal 4, n and equal 4 quantitative values that add region in Fig. 4.
As the optional execution mode of one, the 3rd lookup unit 609 can also be used for using the 3rd group of data as the selection address of the logical circuit of a multiselect one, from described the second planisphere, in each region, in preset reference mapping symbols, select and described the 3rd group of the second mapping symbols that data are corresponding.
Such the 3rd lookup unit 609 can be just 2
n-tin individual mapping symbols, search a mapping symbols, the degree of depth of tabling look-up is 2
n-t.
The 4th lookup unit 610, be used for using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, described correction offset vector comprises I tributary signal and Q tributary signal.
Such the 4th lookup unit 610 can be just 2
tin individual mapping symbols, search a mapping symbols, the degree of depth of tabling look-up is 2
t.For example: the mapping symbols that the 3rd lookup unit 609 finds out is that in Fig. 4, circle encloses the mapping title of coming, the 4th lookup unit 610 is just searched in the region at this mapping symbols place so, from this region, find out a mapping symbols, using the mapping symbols finding out as revising offset vector.
As the optional execution mode of one, described equipment can also comprise:
Coding unit, for carrying out Gray code by described the 4th group of data;
Optionally, in this execution mode, the 4th lookup unit 610 can also be used for using the result of described Gray code as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out the correction offset vector corresponding with described result, described correction offset vector comprises I tributary signal and Q tributary signal.
The second modulating unit 612, for described the 3rd mapping symbols is carried out to quadrature amplitude modulation QAM, obtains the 22
nqam signal;
The second transmitting element 613, for sending the described the 22
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
When in the time that the amount of bits of modulating data is odd number, said n is odd number, in modulation mapping process, only need to carry out one time 2 the second planisphere
n-tthe degree of depth table look-up, and one time 2
tthe degree of depth table look-up, 2 in compared to existing technology
n, the present invention can reduce the degree of depth of tabling look-up, to save the resource of RAM.
As the optional execution mode of one, described modulating equipment can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, can realize when in the time that the amount of bits of modulating data is even number or odd number, can adopt different mapping modes, and can also reduce the degree of depth of tabling look-up of modulation mapping, can also make demapping process reduce the degree of depth of tabling look-up, to save the resource of RAM.
Fig. 9 is the structural representation of a kind of demodulated equipment of providing of the embodiment of the present invention, as shown in Figure 9, comprising: receiving element 701, demodulating unit 702, the first lookup unit 703, the second lookup unit 704 and the first concatenation unit 705, wherein:
Receiving element 701, sends 2 for receiving transmitting terminal
nqam signal;
Demodulating unit 702, for to described 2
nqam signal carries out demodulation, obtains mapping symbols;
The first lookup unit 703, for in the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
The second lookup unit 704 as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal for the secondary vector of Q tributary signal that described the first mapping symbols is comprised from described the 3rd planisphere;
The first concatenation unit 705, for described first group of data and described second group of data are spliced, obtains described 2
nthe initial data that qam signal is corresponding.
It should be noted that, the 3rd planisphere that the present embodiment provides, as to scheme the first planisphere that embodiment provides be above one to one, in the first planisphere, constellation figure represents mapping symbols, what the first planisphere used for example tables look-up address, for data (: Bit data), what use that this address of tabling look-up finds out from the first planisphere is a mapping symbols, and constellation point in the 3rd planisphere represents data, what the 3rd planisphere used tables look-up address for mapping symbols, what use that this address of tabling look-up finds out from the first planisphere is data (for example: Bit data).The structure of the 3rd planisphere can for example, with reference to the structure of the first planisphere (: shown in Fig. 3).
Optionally, suppose that described first group of data are t bit, second group of data is n-t bit, initial data is just n bit, such the first lookup unit 703 and the second lookup unit 704 respectively demapping go out first group of data and second group of data, compared with going out n Bit data with demapping of prior art, reduce the degree of depth of tabling look-up.
As the optional execution mode of one, described demodulated equipment can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, receive transmitting terminal and send 2
nqam signal, to described 2
nqam signal carries out demodulation, obtains mapping symbols; In the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data; The primary vector of the Q tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere; Described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.Can reduce like this degree of depth of tabling look-up in demapping process, to save the resource of RAM.
Figure 10 is the structural representation of the another kind of demodulated equipment that provides of the embodiment of the present invention, as shown in figure 10, comprise: receiving element 801, demodulating unit 802, the first lookup unit 803, the second lookup unit 804 and the first concatenation unit 805, coding unit 806, translation unit 807, the 3rd lookup unit 808 and the second concatenation unit 809, wherein:
Receiving element 801, sends 2 for receiving transmitting terminal
nqam signal;
Demodulating unit 802, for to described 2
nqam signal carries out demodulation, obtains mapping symbols;
The first lookup unit 803, for in the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
The second lookup unit 804 as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal for the secondary vector of Q tributary signal that described the first mapping symbols is comprised from described the 3rd planisphere;
Optionally, when data corresponding to described I tributary signal are specially the coordinate figure of the middle abscissa of described the 3rd planisphere, the data that Q tributary signal is corresponding are so just the coordinate figure of ordinate in described the 3rd planisphere; When data corresponding to described I tributary signal are specially the coordinate figure of the middle ordinate of described planisphere, the data that Q tributary signal is corresponding are so just the coordinate figure of abscissa in described planisphere.
The first concatenation unit 805, for described first group of data and described second group of data are spliced, obtains described 2
nthe initial data that qam signal is corresponding.
Optionally, due to the I of mapping symbols and the orthogonal property of Q tributary signal, the first concatenation unit 805 can be that first group of data and second group of data are inserted to splicing in turn,, when first group of data is ACE, when second group of data is BDF, the first concatenation unit 805 just obtains the data of an ABCDEF.
Optionally, there is calculus of differences relation in low t/2 position and the coded-bit data of above-mentioned mapping symbols, just low two corresponding Bit datas of the I tributary signal of described mapping symbols and Q tributary signal can be restored like this by coding unit 806.If coded-bit data are four Bit datas, coding unit 806 just carries out Gray code and obtains coded-bit data low two of above-mentioned mapping title.
Optionally, above-mentioned the 4th planisphere is corresponding with the second constellation that embodiment provides above, and the relation of both correspondences can be with reference to the 3rd planisphere of foregoing description and the corresponding relation of the first planisphere.
Optionally, the initial point mapping symbols in the above-mentioned region with described the 4th planisphere moves to the translation rail of described region with reference to mapping title, this region can be arbitrary region in the 4th planisphere, because the position of region in the 4th planisphere is fixing, and the position of the reference mapping symbols in each region is also fixed, to move to the translation track of the reference mapping title in this region be all the same to the initial point mapping symbols in no matter which region like this.For example: as shown in Figure 4, in Fig. 4, circle encloses the reference mapping symbols that next mapping title is a certain region to the structure of the 4th planisphere, and translation unit 807 is just with the trajectory-offset with reference to mapping symbols by the initial point mapping symbols translation in this region like this.The mapping symbols of the central point that above-mentioned initial point mapping symbols is each region.
The 3rd lookup unit 808, for the I tributary signal of described mapping symbols and Q tributary signal are removed respectively to the division arithmetic that t rounds, the I tributary signal of the result of described division arithmetic is multiplied by the multiplying of N, and using the result of the Q tributary signal of the result of described multiplying and described division arithmetic as the address of tabling look-up, in the 4th planisphere from described translation, find out coset Bit data; Wherein, described N is the quantity of the comparing data that comprises a line that comparing data is maximum in described the 4th planisphere.
Optionally, described in the address of tabling look-up be specifically as follows I ' × N+Q ', wherein, I ' is the I tributary signal after described division arithmetic, Q ' is Q tributary signal after described division arithmetic.
The second concatenation unit 809, for described coded-bit data and described coset Bit data are spliced, obtains described 2
nthe initial data that qam signal is corresponding.
As the optional execution mode of one, in the time obtaining said n, the planisphere adopting just can know the above-mentioned mapping symbols of demodulated equipment modulation mapping according to the value of n time, 2
nqam signal corresponding amount of bits while being odd number, be that n is while being odd number, so just can learn the above-mentioned mapping symbols of modulating equipment modulation mapping by the 4th planisphere time, to initial data (, what above-described embodiment was described treats modulating data) rule of dividing, all the people present schemes the second corresponding planisphere while being the planisphere shown in Fig. 4, demodulated equipment just can learn that modulating equipment is that the Bit data of the LSB of initial data is divided into coded-bit data, the Bit data of MSB is above divided into coset Bit data, as the DEFG in ABCDEFG is divided into coded-bit data, ABC is divided into coset Bit data, such the second concatenation unit 809 just can splice coded-bit data after coset Bit data, to obtain the initial data of ABCDEFG.
As the optional execution mode of one, described demodulated equipment can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, can realize when mapping symbols corresponding the amount of bits of data while being even number or odd number, can adopt different demapping modes, and can also reduce the degree of depth of tabling look-up in demapping process, to save the resource of RAM.
Figure 11 is the structural representation of a kind of system of modulating mapping that the embodiment of the present invention provides, and as shown in figure 11, comprising: modulating equipment 901 and demodulated equipment 902.
Optionally, modulating equipment 901 can be the modulating equipment of arbitrary execution mode in the embodiment shown in Fig. 7 or Fig. 8.
As modulating equipment 901 can comprise: acquiring unit, the first division unit, the first lookup unit, the second lookup unit, merge cells, the first modulating unit and the first transmitting element, wherein:
Described acquiring unit, treats modulating data for obtaining, described in treat that modulating data comprises n modulation bit;
Described the first division unit, in the time that n is even number, treats that modulating data be divided into first group data and second group data described in inciting somebody to action according to the first division rule setting in advance;
Described the first lookup unit for using described first group of data as the address of tabling look-up, finds out the primary vector value that comprise I tributary signal corresponding with described first group of data from preset the first planisphere that comprises mapping symbols;
Described the second lookup unit for using described second group of data as the address of tabling look-up, finds out the secondary vector value that comprise Q tributary signal corresponding with described second group of data from described the first planisphere;
Described merge cells, for described primary vector value and described secondary vector value are merged, obtains the first mapping symbols;
Described the first modulating unit, for described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtains the 1
nqam signal;
Described the first transmitting element, for sending the described the 1
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
As the optional execution mode of one, described modulating equipment can be specifically any equipment of the method for the modulation mapping that provides of the application embodiment of the present invention, as figure mobile phone, apparatus such as computer.
Optionally, demodulated equipment 902 can be the demodulated equipment providing of arbitrary execution mode in the embodiment shown in Fig. 9 or Figure 10.
As demodulated equipment 902 can comprise: receiving element, demodulating unit, the first lookup unit, the second lookup unit and the first concatenation unit, wherein:
Described receiving element, sends 2 for receiving transmitting terminal
nqam signal;
Described demodulating unit, for to described 2
nqam signal carries out demodulation, obtains mapping symbols;
Described the first lookup unit, for in the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
Described the second lookup unit as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal for the secondary vector of Q tributary signal that described the first mapping symbols is comprised from described the 3rd planisphere;
Described the first concatenation unit, for described first group of data and described second group of data are spliced, obtains described 2
nthe initial data that qam signal is corresponding.
As the optional execution mode of one, described demodulated equipment can be specifically any equipment of the method for the modulation mapping that provides of the application embodiment of the present invention, as figure mobile phone, apparatus such as computer.
In technique scheme, when in the time that the amount of bits of modulating data is even number, the data of needs modulation mapping are divided into first group of data and second group of data, using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data, using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data; Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols; Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal; Send described 2
nqam signal to receiving terminal so that described receiving terminal is treated modulating data described in obtaining by data demodulates.Can reduce like this modulation mapping and conciliate the degree of depth of tabling look-up in mapping process, to save the resource of RAM.
Figure 12 is the structural representation of the another kind of modulating equipment that provides of the embodiment of the present invention, as shown in figure 12, comprising: receiver 101, processor 102 and reflector 103, wherein:
Obtain and treat modulating data, described in treat that modulating data comprises n modulation bit;
In the time that n is even number, described in inciting somebody to action according to the first division rule setting in advance, treat that modulating data is divided into first group of data and second group of data;
Using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data;
Using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data;
Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols;
Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal;
As the optional execution mode of one, when in the time that modulating data is sent to for miscellaneous equipment the demodulated equipment that this enforcement provides, receiver 101, for obtaining the modulating data for the treatment of that miscellaneous equipment sends, described in treat that modulating data comprises n modulation bit.
When receiving terminal receives 2
nqam signal is treated modulating data described in just can demodulating.
Optionally, suppose to treat that modulating data is 6 bits, step 101 just can will treat that 3 bits in modulating data are divided into first group of data, are divided into second group of data by the data of other 3 bits.To carry out twice degree of depth be 2 to processor 102 like this
3table look-up.The degree of depth 2 of tabling look-up compared to existing technology
6, reduced the degree of depth of tabling look-up.
As the optional execution mode of one, described modulating equipment can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, when in the time that the amount of bits of modulating data is even number, the data of needs modulation mapping are divided into first group of data and second group of data, using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data, using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data; Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols; Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal; Send described 2
nqam signal to receiving terminal so that described receiving terminal is treated modulating data described in obtaining by data demodulates.Can reduce like this modulation mapping and conciliate the degree of depth of tabling look-up in mapping process, to save the resource of RAM.
Figure 13 is the structural representation of the another kind of modulating equipment that provides of the embodiment of the present invention, as shown in figure 13, comprising: receiver 111, processor 112 and reflector 113, wherein:
Obtain and treat modulating data, described in treat that modulating data comprises n modulation bit;
In the time that n is even number, described in inciting somebody to action according to the first division rule setting in advance, treat that modulating data is divided into first group of data and second group of data;
Using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data;
Using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data;
Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols;
Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols.
In the time that n is odd number, described in inciting somebody to action according to the second division rule that set in advance, treat that modulating data is divided into the 3rd group of data and the 4th group of data, wherein, described the 3rd group of data comprise the coset bit of n-t bit, described the 4th group of data comprise the coded-bit of t bit, described t is greater than zero integer, and t < n;
Using described the 3rd group of data as the address of tabling look-up, from the second planisphere that comprises mapping symbols first arranging, find out and described the 3rd group of the second mapping symbols that data are corresponding; Wherein, described the second planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols;
Using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, described correction offset vector comprises I tributary signal and Q tributary signal;
Described by the second mapping symbols and the addition of described correction offset vector, obtain the 3rd mapping symbols;
Described the 3rd mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 22
nqam signal.
As the optional execution mode of one, when in the time that modulating data is sent to for miscellaneous equipment the demodulated equipment that this enforcement provides, receiver 111, for obtaining the modulating data for the treatment of that miscellaneous equipment sends, described in treat that modulating data comprises n modulation bit.
As the optional execution mode of one, in the mapping symbols that above-mentioned the first division rule can comprise based on the first planisphere, the orthogonal property of I and Q tributary signal sets in advance.For example: for example above-mentioned the first planisphere planisphere as shown in Figure 2, treat that modulating data comprises these six Bit datas of ABCDEF, above-mentioned like this first division rule just can, by equally spaced Bit data in above-mentioned data as ACE is divided into first group of data, be divided into second group of data by other equally spaced Bit data BDF.
Optionally, described in the first planisphere that comprises mapping symbols that sets in advance specifically can be as shown in Figure 3 planisphere, the middle constellation point of seat figure is mapping symbols, the constellation point in this planisphere is square full symmetric in four resemble now.
As the optional execution mode of one, processor 112 is carried out using described first group of data as the address of tabling look-up, and the step that finds out the primary vector value that comprise I tributary signal corresponding with described first group of data from preset the first planisphere that comprises mapping symbols can comprise:
Selection address using described first group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual I tributary signal, select an I tributary signal corresponding with described first group of data, and using the I tributary signal of described selection as primary vector value.
Optionally, suppose to treat that modulating data is that bit number is n, wherein n is even number, and the degree of depth that processor 112 is tabled look-up is just 2
n/2, specifically from 2
n/2in individual I tributary signal, select an I tributary signal.Wherein I tributary signal is specifically as follows the coordinate figure of the middle abscissa of described planisphere, or the coordinate figure of ordinate.
As the optional execution mode of one, processor 112 is carried out using described second group of data as the address of tabling look-up, and the step that finds out the secondary vector value that comprise Q tributary signal corresponding with described second group of data from described the first planisphere can comprise:
Selection address using described second group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual Q tributary signal, select a Q tributary signal corresponding with described first group of data, and using the Q tributary signal of described selection as secondary vector value.
Optionally, suppose to treat that modulating data is that bit number is n, wherein n is even number, and the degree of depth that processor 112 is tabled look-up is just 2
n/2, specifically from 2
n/2in individual Q tributary signal, select a Q tributary signal.Wherein, when described I tributary signal is specially the coordinate figure of the middle abscissa of described planisphere, Q tributary signal is just the coordinate figure of ordinate in described planisphere so; When described I tributary signal is specially the coordinate figure of the middle ordinate of described planisphere, Q tributary signal is just the coordinate figure of abscissa in described planisphere so.
When receiving terminal receives above-mentioned 2
nqam signal, just can know this 2
nthe amount of bits of the data that qam signal is corresponding is even number or odd number, in the time being even number, with regard to adopting the demodulation method that even number Bit data is corresponding to carry out demapping, in the time being odd number, just adopt the method for the demodulation that odd number Bit data is corresponding to carry out demapping.
As the optional execution mode of one, the second planisphere that above-mentioned the second division rule can provide based on the embodiment of the present invention sets in advance, can arrange according to the reference mapping symbols in each region in the second planisphere, in the second planisphere, the reference mapping symbols in each region is also just different with the second division rule arranging, wherein, in the second planisphere, the reference mapping symbols in each region residing public position in each region is identical, and in each region, only has one with reference to mapping symbols.For example: the second planisphere as shown in Figure 4, the mapping title in the lower left corner that the reference mapping symbols in each region is each region, for example: in Fig. 4, circle encloses the mapping symbols of coming, such the second division rule just can be divided the LSB and the MSB that treat modulation bit data, can be the 4th group of data by the Bit data of the LSB that treats modulating data, the comparing data of encoding, be the 3rd group of data by the Bit data of the MSB that treats modulating data, be coset Bit data, like this with coset Bit data as the address of tabling look-up, for example in just can the second planisphere, find in the second planisphere in each region, with reference to (selecting a mapping symbols in mapping symbols, select Fig. 4 circle and enclose the mapping symbols of coming), and it is non-with reference to mapping symbols with regard to selecting one in the above-mentioned mapping symbols region of selecting as the address of tabling look-up by coded-bit data.
As the optional execution mode of one, said n can be different and different according to planisphere with t, planisphere as shown in Figure 4, and 16 constellation point of each district inclusion in Fig. 4, so above-mentioned t just can equal 4, n and equal 4 quantitative values that add region in Fig. 4.
As the optional execution mode of one, processor 112 is carried out using described the 3rd group of data as the address of tabling look-up, and from the second planisphere that comprises mapping symbols first arranging, finds out and described the 3rd group of the second mapping symbols that data are corresponding; Wherein, described the second planisphere comprises 2
n-tindividual region, each described district inclusion 2
tthe step of individual mapping symbols can comprise:
Using the 3rd group of data as the selection address of the logical circuit of a multiselect one, from described the second planisphere, in each region, in preset reference mapping symbols, select and described the 3rd group of the second mapping symbols that data are corresponding.
As the optional execution mode of one, after treating that modulating data is divided into the 3rd group of data and the 4th group of data described in inciting somebody to action according to the second division rule that set in advance in execution at processor 112, carrying out using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, before the step that described correction offset vector comprises I tributary signal and Q tributary signal, processor 112 can also be used for carrying out following steps:
Described the 4th group of data are carried out to Gray code;
Optionally, in this execution mode, processor 112 is carried out using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, the step that described correction offset vector comprises I tributary signal and Q tributary signal can comprise:
Using the result of described Gray code as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out the correction offset vector corresponding with described result, described correction offset vector comprises I tributary signal and Q tributary signal.
When in the time that the amount of bits of modulating data is odd number, said n is odd number, in modulation mapping process, only need to carry out one time 2 the second planisphere
n-tthe degree of depth table look-up, and one time 2
tthe degree of depth table look-up, 2 in compared to existing technology
n, the present invention can reduce the degree of depth of tabling look-up, to save the resource of RAM.
As the optional execution mode of one, described equipment can also comprise:
As the optional execution mode of one, described modulating equipment can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, can realize when in the time that the amount of bits of modulating data is even number or odd number, can adopt different mapping modes, and can also reduce the degree of depth of tabling look-up of modulation mapping, can also make demapping process reduce the degree of depth of tabling look-up, to save the resource of RAM.
Figure 14 is the structural representation of the another kind of demodulated equipment that provides of the embodiment of the present invention, as Figure 14, shown in, comprising: receiver 121 and processor 122, wherein:
To described 2
nqam signal carries out demodulation, obtains mapping symbols;
In the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
The primary vector of the Q tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere;
Described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
It should be noted that, the 3rd planisphere that the present embodiment provides, as to scheme the first planisphere that embodiment provides be above one to one, in the first planisphere, constellation figure represents mapping symbols, what the first planisphere used for example tables look-up address, for data (: Bit data), what use that this address of tabling look-up finds out from the first planisphere is a mapping symbols, and constellation point in the 3rd planisphere represents data, what the 3rd planisphere used tables look-up address for mapping symbols, what use that this address of tabling look-up finds out from the first planisphere is data (for example: Bit data).The structure of the 3rd planisphere can for example, with reference to the structure of the first planisphere (: shown in Fig. 3).
Optionally, suppose that described first group of data are t bit, second group of data is n-t bit, initial data is just n bit, like this processor 122 respectively demapping go out first group of data and second group of data, go out n Bit data with demapping of prior art compared with, reduced the degree of depth of tabling look-up.
As the optional execution mode of one, described demodulated equipment can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, receive transmitting terminal and send 2
nqam signal, to described 2
nqam signal carries out demodulation, obtains mapping symbols; In the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data; The primary vector of the Q tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere; Described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.Can reduce like this degree of depth of tabling look-up in demapping process, to save the resource of RAM.
Figure 15 is the structural representation of the another kind of demodulated equipment that provides of the embodiment of the present invention, as shown in figure 15, comprising: receiver 131 and processor 132, wherein:
To described 2
nqam signal carries out demodulation, obtains mapping symbols;
In the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
The primary vector of the Q tributary signal that described the first mapping symbols is comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere;
Described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding;
In the time that n is odd number, Gray code is carried out in the low t/2 position of the I tributary signal of described the first mapping symbols and Q tributary signal and obtain coded-bit data;
The translation track that the 4th planisphere that comprises Bit data setting in advance is moved to the preset reference mapping symbols in described region with the initial point mapping symbols in the region of described the 4th planisphere carries out translation; Wherein, described the 4th planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols, t is natural number, and t < n;
The I tributary signal of described mapping symbols and Q tributary signal are removed respectively to the division arithmetic that t rounds, the I tributary signal of the result of described division arithmetic is multiplied by the multiplying of N, and using the result of the Q tributary signal of the result of described multiplying and described division arithmetic as the address of tabling look-up, in the 4th planisphere from described translation, find out coset Bit data; Wherein, described N is the quantity of the comparing data that comprises a line that comparing data is maximum in described the 4th planisphere;
Described coded-bit data and described coset Bit data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
In the time that n is even number, optional, the data that in mapping symbols, I tributary signal is corresponding are specially the coordinate figure of the middle abscissa of described the 3rd planisphere, and the data that Q tributary signal is corresponding are so just the coordinate figure of ordinate in described the 3rd planisphere; When data corresponding to described I tributary signal are specially the coordinate figure of the middle ordinate of described planisphere, the data that Q tributary signal is corresponding are so just the coordinate figure of abscissa in described planisphere.
Optionally, due to the I of mapping symbols and the orthogonal property of Q tributary signal, processor 132 can be that first group of data and second group of data are inserted to splicing in turn,, when first group of data is ACE, when second group of data is BDF, processor 132 just obtains the data of an ABCDEF.
In the time that n is odd number, optionally, there is calculus of differences relation in low t/2 position and the coded-bit data of above-mentioned mapping symbols, just low two corresponding Bit datas of the I tributary signal of described mapping symbols and Q tributary signal can be restored like this by processor 132.If coded-bit data are four Bit datas, processor 132 just carries out Gray code and obtains coded-bit data low two of above-mentioned mapping title.
Optionally, above-mentioned the 4th planisphere is corresponding with the second constellation that embodiment provides above, and the relation of both correspondences can be with reference to the 3rd planisphere of foregoing description and the corresponding relation of the first planisphere.
Optionally, the initial point mapping symbols in the above-mentioned region with described the 4th planisphere moves to the translation rail of described region with reference to mapping title, this region can be arbitrary region in the 4th planisphere, because the position of region in the 4th planisphere is fixing, and the position of the reference mapping symbols in each region is also fixed, to move to the translation track of the reference mapping title in this region be all the same to the initial point mapping symbols in no matter which region like this.For example: as shown in Figure 4, in Fig. 4, circle encloses the reference mapping symbols that next mapping title is a certain region to the structure of the 4th planisphere, and processor 132 is just with the trajectory-offset with reference to mapping symbols by the initial point mapping symbols translation in this region like this.The mapping symbols of the central point that above-mentioned initial point mapping symbols is each region.
Optionally, described in the address of tabling look-up be specifically as follows I ' × N+Q ', wherein, I ' is the I tributary signal after described division arithmetic, Q ' is Q tributary signal after described division arithmetic.
As the optional execution mode of one, in the time obtaining said n, the planisphere adopting just can know the above-mentioned mapping symbols of demodulated equipment modulation mapping according to the value of n time, 2
nqam signal corresponding amount of bits while being odd number, be that n is while being odd number, so just can learn the above-mentioned mapping symbols of modulating equipment modulation mapping by the 4th planisphere time, to initial data (, what above-described embodiment was described treats modulating data) rule of dividing, all the people present schemes the second corresponding planisphere while being the planisphere shown in Fig. 4, demodulated equipment just can learn that modulating equipment is that the Bit data of the LSB of initial data is divided into coded-bit data, the Bit data of MSB is above divided into coset Bit data, as the DEFG in ABCDEFG is divided into coded-bit data, ABC is divided into coset Bit data, processor 132 just can splice coded-bit data after coset Bit data like this, to obtain the initial data of ABCDEFG.
As the optional execution mode of one, described equipment can also comprise:
As the optional execution mode of one, described demodulated equipment can comprise:
The communication equipment such as mobile phone, computer.
In technique scheme, can realize when mapping symbols corresponding the amount of bits of data while being even number or odd number, can adopt different demapping modes, and can also reduce the degree of depth of tabling look-up in demapping process, to save the resource of RAM.
Figure 16 is that the another kind that the embodiment of the present invention provides is modulated the structural representation of the system of mapping, as shown in figure 16, comprising: modulating equipment 141 and demodulated equipment 142.
Optionally, modulating equipment 141 can be the modulating equipment of arbitrary execution mode in the embodiment shown in Figure 12 or Figure 13.
As modulating equipment 91 can comprise: receiver, processor and reflector, wherein:
Processor, for carrying out following steps:
Obtain and treat modulating data, described in treat that modulating data comprises n modulation bit;
In the time that n is even number, described in inciting somebody to action according to the first division rule setting in advance, treat that modulating data is divided into first group of data and second group of data;
Using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data;
Using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data;
Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols;
Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal;
Reflector, for sending described 2
nqam signal to receiving terminal so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
When in the time that modulating data is sent to for miscellaneous equipment the demodulated equipment that this enforcement provides, receiver, for obtaining the modulating data for the treatment of that miscellaneous equipment sends, described in treat that modulating data comprises n modulation bit.
Optionally, demodulated equipment 142 can be the demodulated equipment of arbitrary execution mode in the embodiment shown in Figure 14 or Figure 15.
As demodulated equipment 142 can comprise: receiver and processor, wherein:
Receiver, sends 2 for receiving transmitting terminal
nqam signal.
Processor is used for carrying out following steps:
To described 2
nqam signal carries out demodulation, obtains mapping symbols;
In the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
The primary vector of the Q tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere;
Described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
In technique scheme, when in the time that the amount of bits of modulating data is even number, the data of needs modulation mapping are divided into first group of data and second group of data, using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data, using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data; Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols; Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal; Send described 2
nqam signal to receiving terminal so that described receiving terminal is treated modulating data described in obtaining by data demodulates.Can reduce like this modulation mapping and conciliate the degree of depth of tabling look-up in mapping process, to save the resource of RAM.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can carry out the hardware that instruction is relevant by computer program to complete, described program can be stored in a computer read/write memory medium, this program, in the time carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random access memory (RandomAccess Memory is called for short RAM) etc.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.
Claims (15)
1. a method of modulating mapping, is characterized in that, comprising:
Obtain and treat modulating data, described in treat that modulating data comprises n modulation bit;
In the time that n is even number, described in inciting somebody to action according to the first division rule setting in advance, treat that modulating data is divided into first group of data and second group of data;
Using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data;
Using described second group of data as the address of tabling look-up, from described the first planisphere, find out the secondary vector value that comprise Q tributary signal corresponding with described second group of data;
Described primary vector value and described secondary vector value are merged, obtain the first mapping symbols;
Described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 1
nqam signal;
Send the described the 1
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
2. the method for claim 1, it is characterized in that, described using described first group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise I tributary signal corresponding with described first group of data and comprise:
Selection address using described first group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual I tributary signal, select an I tributary signal corresponding with described first group of data, and using the I tributary signal of described selection as primary vector value;
Described using described second group of data as the address of tabling look-up, from preset the first planisphere that comprises mapping symbols, find out the primary vector value that comprise Q tributary signal corresponding with described second group of data and comprise:
Selection address using described second group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual Q tributary signal, select a Q tributary signal corresponding with described first group of data, and using the Q tributary signal of described selection as secondary vector value.
3. method as claimed in claim 1 or 2, it is characterized in that, after obtaining and treating modulating data, described method also comprises: in the time that n is odd number, treat that modulating data is divided into the 3rd group of data and the 4th group of data, wherein according to the second division rule that set in advance described in inciting somebody to action, described the 3rd group of data comprise the coset bit of n-t bit, described the 4th group of data comprise the coded-bit of t bit, and described t is greater than zero integer, and t < n;
Using described the 3rd group of data as the address of tabling look-up, from the second planisphere that comprises mapping symbols first arranging, find out and described the 3rd group of the second mapping symbols that data are corresponding; Wherein, described the second planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols;
Using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, described correction offset vector comprises I tributary signal and Q tributary signal;
Described by the second mapping symbols and the addition of described correction offset vector, obtain the 3rd mapping symbols;
Described the 3rd mapping symbols is carried out to quadrature amplitude modulation QAM, obtain the 22
nqam signal;
Send the described the 22
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
4. method as claimed in claim 3, it is characterized in that, after treating that modulating data is divided into the 3rd group of data and the 4th group of data described in described the second division rule general according to setting in advance, described using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, before described correction offset vector comprises I tributary signal and Q tributary signal, described method also comprises:
Described the 4th group of data are carried out to Gray code;
Described using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, described correction offset vector comprises I tributary signal and Q tributary signal comprises:
Using the result of described Gray code as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out the correction offset vector corresponding with described result, described correction offset vector comprises I tributary signal and Q tributary signal.
5. method as claimed in claim 3, is characterized in that, described using described the 3rd group of data as the address of tabling look-up, and finds out second mapping symbols corresponding with described the 3rd group of data and comprise from the second planisphere that comprises mapping symbols first arranging:
Selection address using described the 3rd group of data as the logical circuit of a multiselect one is selected and described the 3rd group of the second mapping symbols that data are corresponding in preset reference mapping symbols in each region from described the second planisphere.
6. a method for demapping, is characterized in that, comprising:
Receive transmitting terminal and send 2
nqam signal;
To described 2
nqam signal carries out demodulation, obtains mapping symbols;
In the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
The secondary vector of the Q tributary signal that described the first mapping symbols is comprised, as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal from described the 3rd planisphere;
Described first group of data and described second group of data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
7. method as claimed in claim 6, is characterised in that, in the time that n is odd number, to described 2
nqam signal carries out demodulation, and after obtaining mapping symbols, described method also comprises:
Gray code is carried out in the low t/2 position of the I tributary signal of described mapping symbols and Q tributary signal and obtain coded-bit data;
The translation track that the 4th planisphere that comprises Bit data setting in advance is moved to the preset reference mapping symbols in described region with the initial point mapping symbols in the region of described the 4th planisphere carries out translation; Wherein, described the 4th planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols, t is natural number, and t < n;
The I tributary signal of described mapping symbols and Q tributary signal are removed respectively to the division arithmetic that t rounds, the I tributary signal of the result of described division arithmetic is multiplied by the multiplying of N, and using the result of the Q tributary signal of the result of described multiplying and described division arithmetic as the address of tabling look-up, in the 4th planisphere from described translation, find out coset Bit data; Wherein, described N is the quantity of the comparing data that comprises a line that comparing data is maximum in described the 4th planisphere;
Described coded-bit data and described coset Bit data are spliced, obtain described 2
nthe initial data that qam signal is corresponding.
8. a modulating equipment, is characterized in that, comprising: acquiring unit, the first division unit, the first lookup unit, the second lookup unit, merge cells, the first modulating unit and the first transmitting element, wherein:
Described acquiring unit, treats modulating data for obtaining, described in treat that modulating data comprises n modulation bit;
Described the first division unit, in the time that n is even number, treats that modulating data be divided into first group data and second group data described in inciting somebody to action according to the first division rule setting in advance;
Described the first lookup unit for using described first group of data as the address of tabling look-up, finds out the primary vector value that comprise I tributary signal corresponding with described first group of data from preset the first planisphere that comprises mapping symbols;
Described the second lookup unit for using described second group of data as the address of tabling look-up, finds out the secondary vector value that comprise Q tributary signal corresponding with described second group of data from described the first planisphere;
Described merge cells, for described primary vector value and described secondary vector value are merged, obtains the first mapping symbols;
Described the first modulating unit, for described the first mapping symbols is carried out to quadrature amplitude modulation QAM, obtains the 1
nqam signal;
Described the first transmitting element, for sending the described the 1
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
9. equipment as claimed in claim 8, is characterized in that, described the first lookup unit is also for the selection address using described first group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual I tributary signal, select an I tributary signal corresponding with described first group of data, and using the I tributary signal of described selection as primary vector value;
Described the second lookup unit is also for the selection address using described second group of data as the logical circuit of a multiselect, comprise from described the first planisphere 2
n/2in individual Q tributary signal, select a Q tributary signal corresponding with described first group of data, and using the Q tributary signal of described selection as secondary vector value.
10. equipment as claimed in claim 8 or 9, is characterized in that, described equipment also comprises:
The second division unit, for in the time that n is odd number, described in inciting somebody to action according to the second division rule that set in advance, treat that modulating data is divided into the 3rd group of data and the 4th group of data, wherein, described the 3rd group of data comprise the coset bit of n-t bit, described the 4th group of data comprise the coded-bit of t bit, and described t is greater than zero integer, and t < n;
The 3rd lookup unit for using described the 3rd group of data as the address of tabling look-up, finds out and described the 3rd group of the second mapping symbols that data are corresponding from the second planisphere that comprises mapping symbols first arranging; Wherein, described the second planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols;
The 4th lookup unit, be used for using described the 4th group of data as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out and described the 4th group of correction offset vector that data are corresponding, described correction offset vector comprises I tributary signal and Q tributary signal;
Adder unit, is added the second mapping symbols and described correction offset vector for described, obtains the 3rd mapping symbols;
The second modulating unit, for described the 3rd mapping symbols is carried out to quadrature amplitude modulation QAM, obtains the 22
nqam signal;
The second transmitting element, for sending the described the 22
nqam signal is to receiving terminal, so that described receiving terminal is treated modulating data described in obtaining by data demodulates.
11. equipment as claimed in claim 10, is characterized in that, described equipment also comprises:
Coding unit, for carrying out Gray code by described the 4th group of data;
Described the 4th lookup unit is also for using the result of described Gray code as the address of tabling look-up, from the region of the second planisphere described in described the second mapping symbols place, find out the correction offset vector corresponding with described result, described correction offset vector comprises I tributary signal and Q tributary signal.
12. equipment as claimed in claim 10, it is characterized in that, described the 3rd lookup unit is also for the selection address using described the 3rd group of data as the logical circuit of a multiselect one, from described the second planisphere, in each region, in preset reference mapping symbols, selects and described the 3rd group of the second mapping symbols that data are corresponding.
13. 1 kinds of demodulated equipments, is characterized in that, comprising: receiving element, demodulating unit, the first lookup unit, the second lookup unit and the first concatenation unit, wherein:
Described receiving element, sends 2 for receiving transmitting terminal
nqam signal;
Described demodulating unit, for to described 2
nqam signal carries out demodulation, obtains mapping symbols;
Described the first lookup unit, for in the time that described n is even number, the primary vector of the I tributary signal that described mapping symbols is comprised, as the address of tabling look-up, finds out the first group data corresponding with described I tributary signal from preset the 3rd planisphere that comprises Bit data;
Described the second lookup unit as the address of tabling look-up, finds out the second group data corresponding with described Q tributary signal for the secondary vector of Q tributary signal that described the first mapping symbols is comprised from described the 3rd planisphere;
Described the first concatenation unit, for described first group of data and described second group of data are spliced, obtains described 2
nthe initial data that qam signal is corresponding.
14. equipment as claimed in claim 13, is characterized in that, described equipment also comprises:
Coding unit, in the time that n is odd number, carries out Gray code by the low t/2 position of the I tributary signal of described mapping symbols and Q tributary signal and obtains coded-bit data;
Translation unit, carries out translation for the translation track that the 4th planisphere that comprises Bit data setting in advance is moved to the preset reference mapping symbols in described region with the initial point mapping symbols in the region of described the 4th planisphere; Wherein, described the 4th planisphere comprises 2
n-tindividual region, each described district inclusion 2
tindividual mapping symbols, t is natural number, and t < n;
The 3rd lookup unit, for the I tributary signal of described mapping symbols and Q tributary signal are removed respectively to the division arithmetic that t rounds, the I tributary signal of the result of described division arithmetic is multiplied by the multiplying of N, and using the result of the Q tributary signal of the result of described multiplying and described division arithmetic as the address of tabling look-up, in the 4th planisphere from described translation, find out coset Bit data; Wherein, described N is the quantity of the comparing data that comprises a line that comparing data is maximum in described the 4th planisphere;
The second concatenation unit, for described coded-bit data and described coset Bit data are spliced, obtains described 2
nthe initial data that qam signal is corresponding.
Modulate the system of mapping for 15. 1 kinds, it is characterized in that, comprising: modulating equipment and the demodulated equipment as described in any one in claim 13-14 as described in any one in claim 8-12.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105897635A (en) * | 2016-04-06 | 2016-08-24 | 武汉芯泰科技有限公司 | Communication signal modulation method and system |
| WO2017173602A1 (en) * | 2016-04-06 | 2017-10-12 | 武汉芯泰科技有限公司 | Communication signal modulation method and system |
| CN107995140A (en) * | 2016-10-26 | 2018-05-04 | 晨星半导体股份有限公司 | Symbol determination methods, symbol decision circuitry and digital received circuit |
| CN108347400A (en) * | 2017-12-22 | 2018-07-31 | 中国电子科技集团公司第二十二研究所 | Determination method, apparatus, storage medium and the electronic device of demapping output valve |
| CN108933753A (en) * | 2017-05-25 | 2018-12-04 | 深圳市中兴微电子技术有限公司 | A kind of modulator approach, device and computer storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070291874A1 (en) * | 2006-06-20 | 2007-12-20 | Kangnung National University Industry Academy Corporation Group | Method and apparatus for modulating digital signal using equilateral triangular constellation |
| CN1717909B (en) * | 2003-06-23 | 2011-06-15 | 徐洪锡 | A demodulation method using soft decision for quadrature amplitude modulation and apparatus thereof |
| CN102404072A (en) * | 2010-09-08 | 2012-04-04 | 华为技术有限公司 | Method for sending information bits, device thereof and system thereof |
| CN102457289A (en) * | 2011-12-28 | 2012-05-16 | 熊猫电子集团有限公司 | Exciter setting method and exciter of shortwave four-channel diversity transmission based on space time coding |
-
2012
- 2012-11-20 CN CN201210471917.0A patent/CN103841075B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1717909B (en) * | 2003-06-23 | 2011-06-15 | 徐洪锡 | A demodulation method using soft decision for quadrature amplitude modulation and apparatus thereof |
| US20070291874A1 (en) * | 2006-06-20 | 2007-12-20 | Kangnung National University Industry Academy Corporation Group | Method and apparatus for modulating digital signal using equilateral triangular constellation |
| CN102404072A (en) * | 2010-09-08 | 2012-04-04 | 华为技术有限公司 | Method for sending information bits, device thereof and system thereof |
| CN102457289A (en) * | 2011-12-28 | 2012-05-16 | 熊猫电子集团有限公司 | Exciter setting method and exciter of shortwave four-channel diversity transmission based on space time coding |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105897635A (en) * | 2016-04-06 | 2016-08-24 | 武汉芯泰科技有限公司 | Communication signal modulation method and system |
| WO2017173602A1 (en) * | 2016-04-06 | 2017-10-12 | 武汉芯泰科技有限公司 | Communication signal modulation method and system |
| CN105897635B (en) * | 2016-04-06 | 2023-06-23 | 武汉芯泰科技有限公司 | Communication signal modulation method and system |
| CN107995140A (en) * | 2016-10-26 | 2018-05-04 | 晨星半导体股份有限公司 | Symbol determination methods, symbol decision circuitry and digital received circuit |
| CN107995140B (en) * | 2016-10-26 | 2020-12-01 | 联发科技股份有限公司 | Symbol judgment method, symbol judgment circuit and digital receiving circuit |
| CN108933753A (en) * | 2017-05-25 | 2018-12-04 | 深圳市中兴微电子技术有限公司 | A kind of modulator approach, device and computer storage medium |
| CN108933753B (en) * | 2017-05-25 | 2019-07-19 | 深圳市中兴微电子技术有限公司 | A kind of modulator approach, device and computer storage medium |
| CN108347400A (en) * | 2017-12-22 | 2018-07-31 | 中国电子科技集团公司第二十二研究所 | Determination method, apparatus, storage medium and the electronic device of demapping output valve |
| CN108347400B (en) * | 2017-12-22 | 2020-12-11 | 中国电子科技集团公司第二十二研究所 | Method and device for determining demapping output value, storage medium and electronic device |
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