CN102611663B - Based on method, equipment and system that down channel self adaptation communicates - Google Patents
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Abstract
The present invention provides a kind of method, equipment and system communicated based on down channel self adaptation.Wherein, transmission equipment is based on the channel information of each subscriber equipment, the prototype function selecting to mate respectively with each channel information is concentrated by the prototype function preserved, and remerge after the communication information being sent to respective user equipment includes respectively the process of shaping filter based on each prototype function to form transmitting signal, subsequently described transmitting signal and the relevant information of each prototype function mated are launched；And received signal is demodulated by the prototype function that each subscriber equipment adopts based on transmission equipment, to obtain the communication information carried in described signal.Compared with prior art, the invention have the advantages that and can realize minimum interference, and reach better BER.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of method, equipment and system communicated based on down channel self adaptation.
Background technology
In all schemes of OFDMA, basic idea is for the different running time-frequency resource grid of different dispatching user facilities, accesses realizing multiple access.In order to obtain higher power system capacity and good bit error rate (BER) performance, existing way is: use different Cyclic Prefix (CP) length for intersymbol interference (ISI) in various degree.This scheme have drawbacks in that existing OFDMA system is to adopt the sinc function that inter-carrier interference (ICI) is sensitive, and additional CP length can reduce system spectral efficiency.
Summary of the invention
It is an object of the invention to provide a kind of method, equipment and system communicated based on down channel self adaptation.
According to an aspect of the present invention, it is provided that a kind of in the transmission equipment of communication system based on the method for the adaptively formed transmitting signal of down channel, wherein, described transmission equipment preserves prototype function collection, and wherein, described method includes step:
A obtains the channel information of each subscriber equipment；
B, based on each channel information, is concentrated the prototype function selecting to mate respectively with each channel information by described prototype function；
C remerges after the communication information being sent to respective user equipment including the process of shaping filter respectively based on each prototype function mated to form transmitting signal；
Described transmitting signal and the relevant information of each prototype function mated are launched by d.
According to another aspect of the present invention, additionally provide a kind of method launching signal based on down channel adaptive demodulation in the subscriber equipment of communication system, wherein, described subscriber equipment is preserved the prototype function collection identical with transmission equipment, wherein, described method includes:
A is based on the relevant information obtaining prototype function in the information received；
B, based on the relevant information of described prototype function, is concentrated by described prototype function and obtains corresponding prototype function；
Received signal is processed by C based on acquired prototype function, to obtain the communication information carried in described signal.
According to a further aspect of the invention, additionally providing a kind of transmission equipment being formed based on down channel Adaptive Modulation in a communications system and launching signal, wherein, described equipment preserves prototype function collection, and wherein, described equipment also includes:
First acquisition device, for obtaining the channel information of each subscriber equipment；
Coalignment, for based on each channel information, being concentrated the prototype function selecting to mate respectively with each channel information by described prototype function；
Forming apparatus, launches signal for remerging after the communication information being sent to respective user equipment includes respectively the process of shaping filter based on each prototype function mated to be formed；
Discharger, for being launched described transmitting signal and the relevant information of each prototype function mated.
According to a further aspect of the invention, additionally provide a kind of subscriber equipment launching signal in a communications system based on down channel adaptive demodulation, wherein, described subscriber equipment is preserved the prototype function collection identical with transmission equipment, wherein, described subscriber equipment includes:
Second acquisition device, for based on the relevant information obtaining prototype function in the information received；
3rd acquisition device, for the relevant information based on described prototype function, is concentrated by described prototype function and obtains corresponding prototype function；
Demodulating equipment, for processing the signal from the equipment of transmission received based on acquired prototype function, to obtain the communication information carried in described signal.
Compared with prior art, the invention have the advantages that and can realize minimum interference, and reach better BER.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is made made with reference to the following drawings, the other features, objects and advantages of the present invention will become more apparent upon:
Fig. 1 is the communication system topologies figure applied based on the adaptively formed transmitting signal of down channel of the present invention；
Fig. 2 be one aspect of the invention carry out, based on down channel self adaptation, the method flow diagram that passes through；
Fig. 3 is the schematic diagram that the communication information being sent to each subscriber equipment is processed by the present invention based on prototype function.
Fig. 4 is that the subscriber equipment of the present invention is based on the prototype function schematic diagram that is demodulated of signal to receiving；
Fig. 5 be another aspect of the present invention carry out, based on down channel self adaptation, the method flow diagram that passes through；
Fig. 6 be one aspect of the invention carry out, based on down channel self adaptation, the system schematic passed through；
Fig. 7 be another aspect of the present invention carry out, based on down channel self adaptation, the system schematic passed through；
In accompanying drawing, same or analogous accompanying drawing labelling represents same or analogous parts.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 illustrates the communication system topologies figure applied based on the adaptively formed transmitting signal of down channel of the present invention.Described communication system includes: subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1n and transmission equipment 2.Wherein, subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1n can be any electronic equipments that can communicate with transmission equipment 2, include but not limited to: mobile phone, PDA etc..And, in subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1n and transmission equipment 2, all preserve identical prototype function collection.Wherein, described prototype function collection can be the real even function presenting good time frequency localization (TFL) feature arbitrarily, includes but not limited to: can adjust different parameters to resist the extension Gaussian function (EGF) etc. of intersymbol interference (ISI) and inter-carrier interference (ICI).
Additionally, as a kind of optimal way, described communication system includes but not limited to: OFDMA system etc..
Fig. 2 illustrates the flow chart of the method that one aspect of the invention communicates based on down channel self adaptation.Wherein, in order to simplify diagram, figure is only described for the communication interaction between subscriber equipment 11 and transmission equipment 2, but it should be appreciated by those skilled in the art, in fact, subscriber equipment 12 ... subscriber equipment 1n also communicating alternately with transmission equipment 2, no longer describes in detail at this one by one.
Concrete, in step sl, transmission equipment 2 obtains the channel information of each subscriber equipment.Such as, transmission equipment 2 obtains the channel information of subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1n.Wherein, the mode of the channel information that transmission equipment 2 obtains each subscriber equipment includes but not limited to: 1) fed back respective channel information by each subscriber equipment by up channel: 2) transmission equipment 2 obtains etc. based on to the analysis of feedback information of each subscriber equipment received.It should be appreciated by those skilled in the art that above-mentioned transmission equipment 2 obtains the mode of channel information and is only merely and lists, not for the restriction present invention.
Then, in step s 2, send equipment 2 based on each channel information, described prototype function concentrate the prototype function selecting to mate respectively with each channel information.Such as, the equipment 2 channel information based on subscriber equipment 1 is sent, by described prototype function collection, for instance, extend Gaussian function, in, select the prototype function mated with the channel information of subscriber equipment 11, for instance for: f1X (), sends the equipment 2 channel information based on subscriber equipment 12, by described prototype function collection, for instance, extend Gaussian function, in, select the prototype function mated with the channel information of subscriber equipment 12, for instance for: f2(x) ... send the equipment 2 channel information based on subscriber equipment 1n, by described prototype function collection, for instance, extend Gaussian function, in, select the prototype function mated with the channel information of subscriber equipment 1n, for instance for: fn(x)。
Then, in step s3, transmission equipment 2 remerges after the communication information being sent to respective user equipment includes respectively the process of shaping filter based on each prototype function mated to form transmitting signal.Such as, for the transmission equipment in OFDMA system, the communication information being respectively sent to respective user equipment is processed into the process launching signal and includes by it: bits of encoded, quadrature amplitude modulation (QAM), mappings, targeting sequencing adds, phase mapping, employing prototype function form filtering etc..Only it is merely lists it will be understood by those skilled in the art that the communication information being respectively sent to respective user equipment is processed into the process launching signal by transmission equipment described above, not for the restriction present invention.
Such as, transmission equipment 2 will be sent to subscriber equipment 11, the communication information of subscriber equipment 12 ... subscriber equipment 1n carries out including the process of the process of shaping filter as shown in Figure 3, transmission equipment 2 will be sent to the communication information of subscriber equipment 11, i.e. source Bit data, after encoded device and QAM modulation device are encoded modulation, Additional Preamble sequence again, map followed by subcarrier, and after carrying out phase mapping, inverse fast Fourier transformed (IFFT), adopt prototype function f1X () forms filtering, be finally re-fed into combiner；Equally, transmission equipment 2 will be sent to the communication information of subscriber equipment 12, i.e. source Bit data, after encoded device and QAM modulation device are encoded modulation, Additional Preamble sequence again, map followed by subcarrier, and after carrying out phase mapping, inverse fast Fourier transformed (IFFT), adopt prototype function f2X () forms filtering, be finally re-fed into combiner；... after the communication information being sent to subscriber equipment 1n is also passed through encoder by transmission equipment 2 and QAM modulation device is encoded modulation, Additional Preamble sequence again, map followed by subcarrier, and after carrying out phase mapping, inverse fast Fourier transformed (IFFT), adopt prototype function fnX () forms filtering, be finally re-fed into combiner, and thus, namely combiner is formed after being merged by each signal launches signal.
Then, in step s 4, described transmitting signal and the relevant information of each prototype function mated are launched by transmission equipment 2.Wherein, the relevant information of prototype function includes but not limited to: index functions information.Such as, transmitting signal and the prototype function f that combiner is exported by equipment 2 is sent1(x)、f2(x)、......fnX the index information of () is launched.As a kind of optimal way, each prototype function f1(x)、f2(x)、......fnX the index information of () can send as side information.
Then, in step s 5, each subscriber equipment receives the signal from the equipment of transmission.Such as, subscriber equipment 11 receives the signal from transmission equipment 2, and therefrom obtains prototype function f1The relevant information of (x), for instance, index information；Subscriber equipment 12 receives the signal from transmission equipment 2, and therefrom obtains prototype function f2The relevant information of (x)；... subscriber equipment 1n receives from the signal sending equipment 2, and therefrom obtains prototype function fnThe relevant information of (x).
Then, in step s 6, each subscriber equipment, based on the relevant information of respective prototype function, is concentrated by described prototype function and is obtained corresponding prototype function.Such as, subscriber equipment 11 is based on prototype function f1X the index information of (), is concentrated by stored prototype function and obtains corresponding prototype function f1(x)；Subscriber equipment 12 is based on prototype function f2X the index information of (), is concentrated by stored prototype function and obtains corresponding prototype function f2(x)；... subscriber equipment 1n is based on prototype function fnX the index information of (), is concentrated by stored prototype function and obtains corresponding prototype function fn(x)。
Finally, in the step s 7, received signal is processed by each subscriber equipment based on each acquired prototype function, to obtain the communication information carried in described signal.Such as, subscriber equipment 11 is based on prototype function f1X received signal is processed by (), to obtain the communication information carried in described signal.For the subscriber equipment in OFDMA system, based on prototype function f1As shown in Figure 4, subscriber equipment 11 receives the signal from transmission equipment 2 by multipath channel 1 to x detailed process that received signal is processed by (), and it is based on prototype function f1After x forming filter 1 that () is formed filters to received signal, carry out FFT again, phase place remaps, subcarrier remaps, after equalizer, qam demodulator and decoder processes, the communication information in received signal can be obtained, i.e. Bit data.Other subscriber equipmenies 12 ... subscriber equipment 1n's is identical with subscriber equipment 11 from the process obtaining the respective communication information in the signal of transmission equipment 2 by what receive based on respective prototype function, no longer describes in detail one by one at this.
It will be understood, however, to one skilled in the art, that the process of each subscriber equipment described above respective communication information of acquisition is only merely and lists, not for the restriction present invention, for different communication systems, its process can be different, no longer describes in detail one by one at this.
Fig. 5 illustrates the flow chart of the method that another aspect of the present invention communicates based on down channel self adaptation.Wherein, in order to simplify diagram, figure is still only described for the communication interaction between subscriber equipment 11 and transmission equipment 2, but it should be appreciated by those skilled in the art, in fact, subscriber equipment 12 ... subscriber equipment 1n also communicating alternately with transmission equipment 2, no longer describes in detail at this one by one.
Concrete, in step so), the feedback information comprising targeting sequencing is each fed back to transmission equipment 2 by each subscriber equipment.Such as, the feedback information comprising targeting sequencing is each sent to transmission equipment 2 by subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1n.
Then, in step S1 ', transmission equipment 2 receives the feedback information from each subscriber equipment, and based on the targeting sequencing comprised in feedback information, obtains the channel information of each subscriber equipment.Such as, send the targeting sequencing that equipment 2 comprises based on subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1n each feedback information, obtain each channel information.Wherein, channel information includes but not limited to: channel delay and frequency shift (FS) etc..Such as, the channel delay of the subscriber equipment 11 that transmission equipment 2 obtains based on targeting sequencing is: τ1, frequency shift (FS) be f1；The channel delay of the subscriber equipment 12 obtained is: τ2, frequency shift (FS) be f2；... the channel delay of the subscriber equipment 11 of acquisition is: τn, frequency shift (FS) be fn。
Then, in step S2 ', send equipment 2 based on the time delay of each channel and frequency shift (FS), described prototype function concentrate the prototype function selecting to mate respectively with each channel information.Such as, transmission equipment 2 based on the channel delay of subscriber equipment 11 is: τ1It is f with frequency shift (FS)1, stored prototype function concentrate and be chosen to mode filter at time domain and frequency domain yardstick and delay, τ1It is f with frequency shift (FS)1Corresponding proportional prototype function, for instance, for f1(x)；Transmission equipment 2 based on the channel delay of subscriber equipment 12 is: τ2It is f with frequency shift (FS)2, stored prototype function concentrate and be chosen to mode filter at time domain and frequency domain yardstick and delay, τ2It is f with frequency shift (FS)2Corresponding proportional prototype function, for instance, for f2(x)；... transmission equipment 2 based on the channel delay of subscriber equipment 1n is: τnIt is f with frequency shift (FS)n, stored prototype function concentrate and be chosen to mode filter at time domain and frequency domain yardstick and delay, τnIt is f with frequency shift (FS)nCorresponding proportional prototype function, for instance, for fn(x).Each prototype function that transmission equipment 2 is thus chosen can match channels scattering function, it is achieved minimizes interference and reaches better bit error rate (BER) performance.
Then, step S3 to S7 is described in detail in the embodiment shown in Figure 2, comprises by reference at this, no longer describes in detail.
Fig. 6 illustrates the system schematic that one aspect of the invention communicates based on down channel self adaptation.Wherein, subscriber equipment 11 includes: the second acquisition device the 111, the 3rd acquisition device 112, demodulating equipment 113；... subscriber equipment 1n includes: the second acquisition device 1n1, the 3rd acquisition device 1n2, demodulating equipment 1n3；Transmission equipment 2 includes: the first acquisition device 21, coalignment 22, forming apparatus 23 and discharger 24.
Concrete, the first acquisition device 21 obtains the channel information of each subscriber equipment.Such as, the first acquisition device 21 obtains the channel information of subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1n.Wherein, the mode of the channel information that transmission equipment 2 first acquisition device 21 obtains each subscriber equipment includes but not limited to: 1) fed back respective channel information by each subscriber equipment by up channel: 2) transmission equipment 2 obtains etc. based on to the analysis of feedback information of each subscriber equipment received.It should be appreciated by those skilled in the art that the mode that above-mentioned first acquisition device 21 obtains channel information is only merely to list, not for the restriction present invention.
Then, coalignment 22, based on each channel information, is concentrated the prototype function selecting to mate respectively with each channel information by described prototype function.Such as, coalignment 22 is based on the channel information of subscriber equipment 1, by described prototype function collection, for instance, extend Gaussian function, in, select the prototype function mated with the channel information of subscriber equipment 11, for instance for: f1(x), coalignment 22 is based on the channel information of subscriber equipment 12, by described prototype function collection, for instance, extend Gaussian function, in, select the prototype function mated with the channel information of subscriber equipment 12, for instance for: f2(x) ... coalignment 22 is based on the channel information of subscriber equipment 1n, by described prototype function collection, for instance, extend Gaussian function, in, select the prototype function mated with the channel information of subscriber equipment 1n, for instance for: fn(x)。
Then, forming apparatus 23 remerges after the communication information being sent to respective user equipment includes respectively the process of shaping filter based on each prototype function mated to form transmitting signal.Such as, for the transmission equipment in OFDMA system, its forming apparatus comprised the communication information being respectively sent to respective user equipment is processed into launch signal process include: bits of encoded, quadrature amplitude modulation (QAM), mappings, targeting sequencing add, phase mapping, employing prototype function form filtering etc..Only it is merely lists it will be understood by those skilled in the art that the communication information being respectively sent to respective user equipment is processed into the process launching signal by forming apparatus described above, not for the restriction present invention.
Such as, forming apparatus 23 will be sent to subscriber equipment 11, the communication information of subscriber equipment 12 ... subscriber equipment 1n carries out including the process of the process of shaping filter as shown in Figure 3, forming apparatus 23 will be sent to the communication information of subscriber equipment 11, i.e. source Bit data, after encoded device and QAM modulation device are encoded modulation, Additional Preamble sequence again, map followed by subcarrier, and after carrying out phase mapping, inverse fast Fourier transformed (IFFT), adopt prototype function f1X () forms filtering, be finally re-fed into combiner；Equally, forming apparatus 23 will be sent to the communication information of subscriber equipment 12, i.e. source Bit data, after encoded device and QAM modulation device are encoded modulation, Additional Preamble sequence again, map followed by subcarrier, and after carrying out phase mapping, inverse fast Fourier transformed (IFFT), adopt prototype function f2X () forms filtering, be finally re-fed into combiner；... after the communication information being sent to subscriber equipment 1n is also passed through encoder by forming apparatus 23 and QAM modulation device is encoded modulation, Additional Preamble sequence again, map followed by subcarrier, and after carrying out phase mapping, inverse fast Fourier transformed (IFFT), adopt prototype function fnX () forms filtering, be finally re-fed into combiner, and thus, namely combiner is formed after being merged by each signal launches signal.
Then, described transmitting signal and the relevant information of each prototype function mated are launched by discharger 24.Wherein, the relevant information of prototype function includes but not limited to: index functions information.Such as, combiner is exported by discharger 24 transmitting signal and prototype function f1(x)、f2(x)、......fnX the index information of () is launched.As a kind of optimal way, each prototype function f1(x)、f2(x)、......fnX the index information of () can send as side information.
Then, the second acquisition device of each subscriber equipment receives the signal from the equipment of transmission.Such as, the second acquisition device 111 receives the signal from transmission equipment 2, and therefrom obtains prototype function f1The relevant information of (x), for instance, index information；Second acquisition device (being unillustrated) of subscriber equipment 12 receives from the signal sending equipment 2, and therefrom obtains prototype function f2The relevant information of (x)；... the second acquisition device 1n1 receives from the signal sending equipment 2, and therefrom obtains prototype function fnThe relevant information of (x).
Then, the 3rd acquisition device of each subscriber equipment, based on the relevant information of respective prototype function, is concentrated by described prototype function and is obtained corresponding prototype function.Such as, the 3rd acquisition device 112 is based on prototype function f1X the index information of (), is concentrated by stored prototype function and obtains corresponding prototype function f1(x)；3rd acquisition device (being unillustrated) of subscriber equipment 12 is based on prototype function f2X the index information of (), is concentrated by stored prototype function and obtains corresponding prototype function f2(x)；... the 3rd acquisition device 1n2 of subscriber equipment 1n is based on prototype function fnX the index information of (), is concentrated by stored prototype function and obtains corresponding prototype function fn(x)。
Finally, received signal is processed by the demodulating equipment of each subscriber equipment based on each acquired prototype function, to obtain the communication information carried in described signal.Such as, the demodulating equipment 113 of subscriber equipment 11 is based on prototype function f1X received signal is processed by (), to obtain the communication information carried in described signal.Such as, for the demodulating equipment of the subscriber equipment in OFDMA system, based on prototype function f1As shown in Figure 4, the demodulating equipment 113 of subscriber equipment 11 receives the signal from transmission equipment 2 by multipath channel 1 to x detailed process that received signal is processed by (), and it is based on prototype function f1After x forming filter 1 that () is formed filters to received signal, carry out FFT again, phase place remaps, subcarrier remaps, after equalizer, qam demodulator and decoder processes, the communication information in received signal can be obtained, i.e. Bit data.The demodulating equipment 1n3 of demodulating equipment (being unillustrated) ... the subscriber equipment 1n of subscriber equipment 12 is identical with demodulating equipment 113 from the process obtaining the respective communication information in the signal of transmission equipment 2 by what receive based on respective prototype function, no longer describes in detail one by one at this.
It will be understood, however, to one skilled in the art, that the process of each subscriber equipment described above respective communication information of acquisition is only merely and lists, not for the restriction present invention, for different communication systems, its process can be different, no longer describes in detail one by one at this.
Fig. 7 illustrates the system schematic that another aspect of the present invention communicates based on down channel self adaptation.Wherein, subscriber equipment 11 includes: feedback device the 114, second acquisition device the 111, the 3rd acquisition device 112, demodulating equipment 113；... subscriber equipment 1n includes: feedback device 1n4, the second acquisition device 1n1, the 3rd acquisition device 1n2, demodulating equipment 1n3；Transmission equipment 2 includes: the first acquisition device 21, coalignment 22, forming apparatus 23 and discharger 24..
Concrete, the feedback information comprising targeting sequencing is each fed back to transmission equipment 2 by the feedback device of each subscriber equipment.Such as, the feedback information comprising targeting sequencing is each sent to transmission equipment 2 by the feedback device 1n1 of feedback device (being unillustrated) ... the subscriber equipment 1n of the feedback device 114 of subscriber equipment 11, subscriber equipment 12.
Then, first receiving device 21 receives the feedback information from each subscriber equipment, and based on the targeting sequencing comprised in feedback information, obtains the channel information of each subscriber equipment.Such as, the targeting sequencing that first receiving device 21 comprises based on subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1n each feedback information, obtains each channel information.Wherein, channel information includes but not limited to: channel delay and frequency shift (FS) etc..Such as, the channel delay of the subscriber equipment 11 that first receiving device 21 obtains based on targeting sequencing is: τ1, frequency shift (FS) be f1；The channel delay of the subscriber equipment 12 obtained is: τ2, frequency shift (FS) be f2；... the channel delay of the subscriber equipment 11 of acquisition is: τn, frequency shift (FS) be fn。
Then, coalignment 22, based on the time delay of each channel and frequency shift (FS), is concentrated the prototype function selecting to mate respectively with each channel information by described prototype function.Such as, coalignment 22 based on the channel delay of subscriber equipment 11 is: τ1It is f with frequency shift (FS)1, stored prototype function concentrate and be chosen to mode filter at time domain and frequency domain yardstick and delay, τ1It is f with frequency shift (FS)1Corresponding proportional prototype function, for instance, for f1(x)；Coalignment 22 based on the channel delay of subscriber equipment 12 is: τ2It is f with frequency shift (FS)2, stored prototype function concentrate and be chosen to mode filter at time domain and frequency domain yardstick and delay, τ2It is f with frequency shift (FS)2Corresponding proportional prototype function, for instance, for f2(x)；... coalignment 22 based on the channel delay of subscriber equipment 1n is: τnIt is f with frequency shift (FS)n, stored prototype function concentrate and be chosen to mode filter at time domain and frequency domain yardstick and delay, τnIt is f with frequency shift (FS)nCorresponding proportional prototype function, for instance, for fn(x)。
Then, forming apparatus 23, discharger 24, the second acquisition device of each subscriber equipment, the 3rd acquisition device, demodulating equipment work process described in detail in the embodiment shown in fig. 6, comprise by reference at this, no longer describe in detail.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when without departing substantially from the spirit of the present invention or basic feature, it is possible to realize the present invention in other specific forms.Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the invention rather than described above limits, it is intended that all changes in the implication of the equivalency dropping on claim and scope be included in the present invention.Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.Furthermore, it is to be understood that " including " word is not excluded for other unit or step, odd number is not excluded for plural number.Multiple unit or the device stated in system claims can also be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and is not offered as any specific order.
Claims (13)
1. based on a method for the adaptively formed transmitting signal of down channel in the transmission equipment of communication system, wherein, described transmission equipment preserves prototype function collection, and wherein, described method includes step:
A obtains the channel information of each subscriber equipment；
Wherein, the step of the channel information of each subscriber equipment of described acquisition includes any one mode following:
-obtain the respective channel information fed back by each subscriber equipment by up channel；
-obtain based on to the analysis of feedback information of each subscriber equipment received；
B, based on each channel information, is concentrated the prototype function selecting to mate respectively with each channel information by described prototype function；
C remerges after the communication information being sent to respective user equipment including the process of shaping filter respectively based on each prototype function mated to form transmitting signal；
Described transmitting signal and the relevant information of each prototype function mated are launched by d, and wherein, the relevant information of described prototype function includes index functions information.
2. method according to claim 1, wherein, the step that the described analysis based on the feedback information to each subscriber equipment received obtains respective channel information specifically includes:
-receive the feedback information comprising targeting sequencing, and the channel information of each subscriber equipment is obtained based on each targeting sequencing information.
3. method according to claim 1 and 2, wherein, described channel information includes channel delay and frequency shift (FS), and then, described step b also includes:
-based on the time delay of each channel and frequency shift (FS), described prototype function concentrate the prototype function selecting to mate respectively with each channel information.
4. method according to claim 1 and 2, wherein, described communication system includes: OFDMA system.
5. the method launching signal based on down channel adaptive demodulation in the subscriber equipment of communication system, wherein, preserves the prototype function collection identical with transmission equipment in described subscriber equipment, wherein, described method includes:
A obtains the relevant information of prototype function based on the signal received, and wherein, the relevant information of described prototype function includes index functions information；
B, based on the relevant information of described prototype function, is concentrated by described prototype function and obtains corresponding prototype function；
Received signal is processed by C based on acquired prototype function, to obtain the communication information carried in described signal；
Wherein, described method is further comprising the steps of:
-feed back respective channel information by up channel.
6. method according to claim 5, wherein, said method comprising the steps of:
-send the feedback information comprising targeting sequencing.
7. forming, based on down channel Adaptive Modulation, the transmission equipment launching signal in a communications system, wherein, described equipment preserves prototype function collection, and wherein, described equipment also includes:
First acquisition device, for obtaining the channel information of each subscriber equipment；
Wherein, described first acquisition device obtains the channel information of each subscriber equipment by any one mode following:
-obtain the respective channel information fed back by each subscriber equipment by up channel；
-obtain based on to the analysis of feedback information of each subscriber equipment received；
Coalignment, for based on each channel information, being concentrated the prototype function selecting to mate respectively with each channel information by described prototype function；
Forming apparatus, launches signal for remerging after the communication information being sent to respective user equipment includes respectively the process of shaping filter based on each prototype function mated to be formed；
Discharger, for described transmitting signal and the relevant information of each prototype function mated being launched, wherein, the relevant information of described prototype function includes index functions information.
8. equipment according to claim 7, wherein, described first acquisition device specifically includes based on the mode that the analysis of feedback information of each subscriber equipment received obtains respective channel information:
-receive the feedback information comprising targeting sequencing, and the channel information of each subscriber equipment is obtained based on each targeting sequencing information.
9. the equipment according to claim 7 or 8, wherein, described channel information includes channel delay and frequency shift (FS), and then, described coalignment is additionally operable to:
-based on the time delay of each channel and frequency shift (FS), described prototype function concentrate the prototype function selecting to mate respectively with each channel information.
10. the equipment according to claim 7 or 8, wherein, described communication system includes: OFDMA system.
11. launch a subscriber equipment for signal in a communications system based on down channel adaptive demodulation, wherein, preserving the prototype function collection identical with transmission equipment in described subscriber equipment, wherein, described subscriber equipment includes:
Second acquisition device, for obtaining the relevant information of prototype function based on the signal received, wherein, the relevant information of described prototype function includes index functions information；
3rd acquisition device, for the relevant information based on described prototype function, is concentrated by described prototype function and obtains corresponding prototype function；
Demodulating equipment, for processing the signal from the equipment of transmission received based on acquired prototype function, to obtain the communication information carried in described signal；
Wherein, described subscriber equipment is additionally operable to:
-feed back respective channel information by up channel.
12. equipment according to claim 11, wherein, described subscriber equipment also includes:
Feedback device, for sending the feedback information comprising targeting sequencing.
13. based on the system that down channel self adaptation communicates, wherein, described system includes: send equipment and multiple subscriber equipment as described in claim 11 or 12 as described in any one of claim 7 to 10.
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