CN102299881A - transmission method - Google Patents
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- CN102299881A CN102299881A CN2010102133758A CN201010213375A CN102299881A CN 102299881 A CN102299881 A CN 102299881A CN 2010102133758 A CN2010102133758 A CN 2010102133758A CN 201010213375 A CN201010213375 A CN 201010213375A CN 102299881 A CN102299881 A CN 102299881A
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Abstract
The invention discloses a transmission method suitable for a wireless communication device. The method comprises the following steps of: firstly, generating a shimming code sequence comprising a plurality of symbol elements, wherein a last symbol element in the plurality of symbol elements is a duplicate of a first symbol element; the transmission method can be applied to a Zadoff-Chu code, a generalized chirp-like code and a constant-amplitude zero-auto-correlation sequence to acquire extra code characteristics, such as orthogonality which is kept in a differential domain; the shimming code sequence is configured in subcarriers which are arranged in an increasing way or a decreasing way in an orthogonal multi-frequency division symbol element to resist linear phase shift caused by time domain delay; and in a multiple orthogonal multi-frequency division symbol element environment, the shimming code sequence can be further divided into multiple segments, and the same shimming way is adopted for each segment; secondly, transmitting the shimming code sequence to a receiver through an air interface; and lastly, after receiving the shimming code sequence, performing differential detection to detect the shimming code sequence by using the receiver. According to the transmission method, the characteristic of the Zadoff-Chu code can be improved.
Description
Technical field
The present invention relates generally to wireless communication technology, and particularly a kind of yard sequence produces system and method, has a snack a yard sequence to provide one.
Background technology
Using the orthogonal multiple frequency division of labor (Orthogonal Frequency-Division Multiplexing, OFDM) in the wireless communications environment of technology, data transmission is carried by many subcarriers (sub-carrier), for instance, data transmission is split into a plurality of groups earlier, each group maps to modulation symbol unit (modulation symbol) separately, and these modulation symbol units further are placed in the subcarrier again.Then, transmitter is carried out the sharp leaf conversion of quick Fourier (Fast Fourier Transform, FFT) producing time domain (time domain) sampled signal (sample), and the combine digital analog-converted is to produce the time domain continuous wave.Transmitter makes it correspond to a carrier wave at the time domain continuous wave execution up-conversion (up-conversion) that produces then.Single carrier orthogonal multifrequency division of labor technology (Single carrierOFDM, SC-OFDM) be another similar techniques, adopt the transmitter of this technology to carry out the fast fourier conversion at modulation symbol unit, and the sampled signal after will changing is configured to frequency domain (frequencydomain), then transmitter carry out in regular turn anti-fast fourier conversion (inversed FFT, IFFT), digital-to-analogue conversion and up-conversion.Orthogonal multiple frequency division of labor technology is adopted by many wireless communication standards widely, such as: wireless zone communication (IEEE 802.11a/g), super wide frequency communication (Ultra-WideBand, UWB), global intercommunication microwave access (Worldwide Interoperabilityfor Microwave Access, WiMAX), Long Term Evolution (3GPP Long Term Evolution, LTE) etc., wherein, single carrier orthogonal multifrequency division of labor technology promptly is used in the data feedback channel of Long Term Evolution.
Look into that Zhu doffer (Zadoff-Chu) sign indicating number has the equal power ratio of ebb (peak-to-average powerratio), zero crossing is relevant and the characteristic of low complex degree receiver or the like, Long Term Evolution has adopted in synchronizing channel (synchronization channel), upload control passage etc. and has looked into Zhu's doffer sign indicating number.What other had a similar characteristic has general class purt sign indicating number (Generalized Chirp-Like (GCL) code), constant amplitude zero auto-correlation (Constant Amplitude Zero Auto-Correlation, a CAZAC) sequence.Look in the set of Zhu's doffer sign indicating number one, mutually orthogonal and when using comparison to detect, can provide remarkable detection probability between sign indicating number and the sign indicating number, yet, when using Differential Detection, look into but ideal not to the utmost of Zhu's doffer sign indicating number.
Summary of the invention
For overcoming the defective of above-mentioned prior art, one embodiment of the invention provide a kind of transmission method, this transmission method is applicable to a radio communication device, and comprise following process step: produce and to comprise that one of a plurality of symbol unit has a snack a yard sequence, last symbol unit in the wherein above-mentioned symbol unit is the first duplicate of first symbol; And see through an air interface the above-mentioned yard sequence of having a snack is sent to a receiver.
Another embodiment of the present invention provides another kind of transmission method, this transmission method is applicable to a radio communication device, and comprise following process step: produce one of a plurality of symbol unit comprise a range finding lead code and have a snack and look into Zhu's doffer sign indicating number sequence, last symbol unit in the wherein above-mentioned symbol unit is the first duplicate of first symbol; And see through an air interface above-mentioned having a snack looked into Zhu's doffer sign indicating number sequence and be sent to a receiver.
The shimming method of looking into Zhu's doffer sign indicating number sequence that is applicable to proposed by the invention is looked into the characteristic of Zhu's doffer sign indicating number in order to lifting, makes to look into Zhu's doffer sign indicating number sequence can obtain extra sign indicating number characteristic after having a snack.
About other additional feature and advantages of the present invention, those of ordinary skills, without departing from the spirit and scope of the present invention, the transmission method that is disclosed in can be according to this case implementation method does a little change and retouching obtains.
Description of drawings
Fig. 1 is according to the described wireless communication system of one embodiment of the invention.
Fig. 2 A to Fig. 2 C is according to the described schematic diagram of looking into Zhu's doffer sign indicating number sequence of having a snack of one embodiment of the invention.
Fig. 3 looks into Zhu's doffer sign indicating number sequence schematic diagram according to one embodiment of the invention is described having a snack of duplicating of time domain.
Fig. 4 looks into Zhu's doffer sign indicating number sequence schematic diagram according to one embodiment of the invention is described having a snack of having a snack of time-domain and frequency-domain.
Fig. 5 looks into Zhu's doffer sign indicating number sequence schematic diagram according to another embodiment of the present invention is described having a snack of duplicating of time domain.
Fig. 6 has a snack according to the described distributed structure that duplicates at frequency domain of another embodiment of the present invention to look into Zhu's doffer sign indicating number sequence schematic diagram.
Fig. 7 has a snack according to the described a plurality of distributed structures that duplicate at frequency domain of another embodiment of the present invention to look into Zhu's doffer sign indicating number sequence schematic diagram.
Fig. 8 has a snack according to the described distributed structure at frequency domain of one embodiment of the invention to look into Zhu's doffer sign indicating number sequence schematic diagram.
Fig. 9 A, Fig. 9 B look into Zhu's doffer sign indicating number sequence schematic diagram according to described use two antennas of one embodiment of the invention having a snack of duplicating of frequency domain.
Figure 10 is a cyclic shift schematic diagram of looking into Zhu's doffer sign indicating number sequence according to having a snack of the described range finding lead code of one embodiment of the invention.
Figure 11 is according to the described transmission method flow chart of one embodiment of the invention.
Wherein, description of reference numerals is as follows:
100～wireless communication system;
110～transmitter;
120～receiver.
Embodiment
What these chapters and sections were narrated is to implement example of the present invention, and following example cooperates explanation with accompanying drawing, and if do not particularly point out, then the same tag that is used in different accompanying drawings is in order to indicate identical or similar elements.Yet following examples are not that all modes of the present invention are implemented in representative only for implementing representative example of the present invention, and protection scope of the present invention is as the criterion when looking the scope that claim defined of enclosing.
The shimming method of looking into Zhu's doffer sign indicating number sequence that is applicable to proposed by the invention is looked into the characteristic of Zhu's doffer sign indicating number in order to lifting, makes to look into Zhu's doffer sign indicating number sequence can obtain extra sign indicating number characteristic after having a snack, and this yard characteristic refers to still possess zero crossing and intersects property behind calculus of differences.Fig. 1 is according to the described wireless communication system of one embodiment of the invention.In wireless communication system 100, transmitter 110 carries out radio communication with receiver 120 mutually in order to see through air interface (air interface), transmitter 110 generations include a plurality of one of units that accord with and have a snack a yard sequence, wherein, this last symbol unit of having a snack yard sequence is the first duplicate of first symbol, with keep this yard sequence in the difference territory orthogonality of (differential domain).Then, transmitter 110 is had a snack a yard sequence through air interface with this and is sent to receiver 120, and receiver 120 is carried out Differential Detection again and had a snack a yard sequence to detect this.It should be noted that, transmitter 110 can be orthogonal multiple frequency division of labor technology or single carrier orthogonal multifrequency division of labor technology with receiver 120 employed wireless communication technologys, and this yard sequence can be and looks into the zero auto-correlation sign indicating number sequence of Zhu's doffer sign indicating number sequence, general class purt sign indicating number sequence or constant amplitude.Following embodiment will be described further to look into Zhu's doffer sign indicating number sequence, and only the present invention is not limited to look into Zhu's doffer sign indicating number sequence.
Fig. 2 A to Fig. 2 C is according to the described schematic diagram of looking into Zhu's doffer sign indicating number sequence of having a snack of one embodiment of the invention.In this embodiment, originally the code word that will transmit (codeword) was to look into Zhu's doffer sign indicating number sequence, and this is looked into Zhu's doffer sign indicating number sequence and includes s as shown in the figure
1To s
NIn N symbol unit, transmitter 110 duplicates Fu Yuan s
1, and the circulation of the symbol that duplicated unit had a snack to this look into the tail end of Zhu's doffer sign indicating number sequence and produce one and have a snack and look into Zhu's doffer sign indicating number sequence.Clear and definite, this is had a snack each the symbol unit that looks in Zhu's doffer sign indicating number sequence and is carried in a subcarrier separately, and shown in Fig. 2 A, this subcarrier corresponds to the radio frequency of picking out with incremental manner in the frequency domain separately; Yet in another embodiment, this subcarrier can correspond to the radio frequency of picking out in the mode of successively decreasing in the frequency domain separately, shown in Fig. 2 B; Or, in other embodiments, this have a snack each the symbol unit that looks in Zhu's doffer sign indicating number sequence can ring-type the mode of displacement (circular shift) dispose, that is to say, shown in Fig. 2 C, having a snack m+1 the symbol unit that looks into Zhu's doffer sign indicating number sequence by this is initial to N symbol unit in regular turn, and then is continued down to m symbol unit by the 1st symbol unit, wherein, m be between 0 and N between arbitrary integer.Particularly, as m during greater than N, Fu Yuan s
mJust be equal to Fu Yuan s
1+ (m mod N), wherein (m mod N) represents m divided by the remainder after the N.
Fig. 3 looks into Zhu's doffer sign indicating number sequence schematic diagram according to one embodiment of the invention is described having a snack of duplicating of time domain.Be similar to Fig. 2 A to Fig. 2 C, the code word that originally will transmit among this embodiment is for including s
1To s
NDeng N symbol unit look into Zhu's doffer sign indicating number sequence, and duplicated the first s of symbol
1And the circulation of the symbol that duplicated unit had a snack the tail end of looking into Zhu's doffer sign indicating number sequence to this.Different is that having a snack among Fig. 3 looked into Zhu's doffer sign indicating number sequence and not only be transmitted in time interval T
1, also be transmitted in time interval T
2With T
3, T wherein
1To T
3Be by select in the time domain with incremental manner institute.Meaning promptly, transmitter 110 further duplicates two parts and has a snack and look into Zhu's doffer sign indicating number sequence, then respectively at time interval T
2With T
3Transmit having a snack of being duplicated and look into Zhu's doffer sign indicating number sequence.Clear and definite, the Fu Yuanke that looks in Zhu's doffer sign indicating number sequence that has a snack that duplicates is configured to identical subcarrier as the former correspondence symbol unit that looks in Zhu's doffer sign indicating number sequence of having a snack.In other embodiments, have a snack the number of copy times of looking into Zhu's doffer sign indicating number sequence and can be set at any number beyond 2.
Fig. 4 looks into Zhu's doffer sign indicating number sequence schematic diagram according to one embodiment of the invention is described having a snack of having a snack of time-domain and frequency-domain.In this embodiment, the code word that originally will transmit is for including s
1To s
3RDeng 3R symbol unit look into Zhu's doffer sign indicating number sequence, wherein, 3R is a predeterminable numerical value, and transmitter 110 is all known this numerical value with receiver 120; Or in other embodiments, receiver 120 can determine the numerical value of 3R with transmitter 110 in the mode of consulting.Transmitter 110 is at first looked into Zhu's doffer sign indicating number sequence according to a transmission length value R with this and is divided into three sections, and first section comprises s
1To s
RComprise s in R symbol unit, second section
R+1To s
2RComprise s in R symbol unit, the 3rd section
2R+1To s
3RIn R symbol unit.As shown in Figure 4, every section each symbol unit that looks in Zhu's doffer sign indicating number sequence is carried in a subcarrier all separately, and this subcarrier corresponds to the radio frequency of picking out with incremental manner in the frequency domain separately, and every section is looked into Zhu's doffer sign indicating number sequence be transmitted in the time interval of picking out with incremental manner separately from time domain.Looking into Zhu's doffer sign indicating number sequence for every section can align in time domain, makes every section to look into the symbol unit that is positioned at identical cis-position in Zhu's doffer sign indicating number sequence and correspond to identical subcarrier.The former doffer of looking into Zhu sign indicating number sequence such as above-mentioned cut apart with arrange after, transmitter 110 further duplicate second section look into Zhu's doffer sign indicating number sequence first accord with first s
R+1And will circulation have a snack the tail end of looking into Zhu's doffer sign indicating number sequence to first section, then duplicate the 3rd section look into Zhu's doffer sign indicating number sequence first accord with first s
2R+1And will circulation have a snack the tail end of looking into Zhu's doffer sign indicating number sequence to second section, duplicate at last first section look into Zhu's doffer sign indicating number sequence first accord with first s
1And the tail end of looking into Zhu's doffer sign indicating number sequence to the 3rd section is had a snack in the circulation of inciting somebody to action.In other embodiments, each accord with first pairing radio frequency can be by selecting and get in the mode of successively decreasing in the frequency domain.Be noted that first accords with first s
1Duplicate be have a snack to the former doffer of looking into Zhu sign indicating number sequence last the symbol unit after, when the former length of looking into Zhu's doffer sign indicating number sequence during less than 3R, transmitter 110 can duplicate have a snack end with circulation after, allow and leave a blank or directly zero filling in this subcarrier not as good as the subcarrier of 3R part in the 3rd section.
Fig. 5 looks into Zhu's doffer sign indicating number sequence schematic diagram according to another embodiment of the present invention is described having a snack of duplicating of time domain.Be similar to Fig. 4, the code word that originally will transmit among this embodiment is for including s
1To s
3RDeng 3R symbol unit look into Zhu's doffer sign indicating number sequence, and this look into Zhu's doffer sign indicating number sequence be split into three sections and in section with section between circulate and have a snack.Different is, transmitter 110 among Fig. 5 further duplicates having a snack among Fig. 4 and looks into Zhu's doffer sign indicating number sequence, and in follow-up orthogonal multiple frequency division of labor symbol unit, transmit having a snack of duplicating and look into Zhu's doffer sign indicating number sequence, similarly, look in Zhu's doffer sign indicating number sequence having a snack of duplicating, look into Zhu's doffer sign indicating number sequence for every section and in time domain, align, make every section to look into the symbol unit that is positioned at identical cis-position in Zhu's doffer sign indicating number sequence and correspond to identical subcarrier, and first accords with first s
1Duplicate be have a snack to this look into Zhu's doffer sign indicating number sequence last the symbol unit after.When the former length of looking into Zhu's doffer sign indicating number sequence during less than 3R, transmitter 110 can duplicate have a snack end with circulation after, allow and leave a blank or directly zero filling in this subcarrier not as good as the subcarrier of 3R part in the 3rd section.
Be noted that the embodiment shown in Fig. 2 A to Fig. 2 C, Fig. 3 to Fig. 5 all can apply to range finding passage (ranging channel) or the random access channel (random access channel) in orthogonal multiple frequency division of labor system or the single carrier orthogonal multifrequency division of labor system.
In addition, have a snack and look into Zhu's doffer sign indicating number sequence and can further be replicated in the frequency domain with distributed structure.Fig. 6 has a snack according to the described distributed structure that duplicates at frequency domain of another embodiment of the present invention to look into Zhu's doffer sign indicating number sequence schematic diagram.Looking into Zhu's doffer sign indicating number sequence with having a snack among Fig. 3 is example, be simplified illustration, described a plurality of having a snack can be looked into Zhu's doffer sign indicating number sequence and be considered as a transport block (transmission block), wherein, described a plurality of symbol units that look in Zhu's doffer sign indicating number sequence of having a snack correspond to respectively from frequency range F
R1In the subcarrier picked out with incremental manner, as shown in Figure 6.Then, transmitter 110 further duplicates this transport block, and in frequency range F
R2The middle transport block that is duplicated that transmits.Clear and definite, each in this copy transmissions block had a snack each the symbol unit that looks into Zhu's doffer sign indicating number sequence and corresponded to respectively from frequency range F
R2In the subcarrier picked out with incremental manner.In addition, described a plurality of in each transport block have a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in three time intervals that continue respectively, that is to say, first in two transport blocks had a snack and looked into Zhu's doffer sign indicating number sequence and be transmitted in time interval T
1, second have a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in time interval T
2, the 3rd have a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in time interval T
3
Be noted that above-mentioned distributed structure can apply to range finding passage or the random access channel in orthogonal multiple frequency division of labor system or the single carrier orthogonal multifrequency division of labor system.
Fig. 7 has a snack according to the described a plurality of distributed structures that duplicate at frequency domain of another embodiment of the present invention to look into Zhu's doffer sign indicating number sequence schematic diagram.In this embodiment, owing to there are a plurality of doffer of looking into Zhu sign indicating number sequences to transmit, therefore look into Zhu's doffer sign indicating number sequence can duplicate and have a snack as Fig. 2 A except each, all have a snack the arrangement of looking into Zhu's doffer sign indicating number sequence is to be carried out at frequency domain and time domain.That is to say that first is looked into Zhu's doffer sign indicating number sequence and includes s
1,1To s
1, NAccord with unit and accord with first s Deng N
1,1Be replicated and circulate to have a snack to this sequence tail end, second and look into Zhu's doffer sign indicating number sequence and include s
2,1To s
2, NAccord with unit and accord with first s Deng N
2,1Be replicated and circulate to have a snack to this sequence tail end, the 3rd and look into Zhu's doffer sign indicating number sequence and include s
3,1To s
3, NAccord with unit and accord with first s Deng N
3,1Be replicated and circulate and have a snack ... by that analogy to this sequence tail end.Be simplified illustration, per three can be had a snack and look into Zhu's doffer sign indicating number sequence and be considered as a transport block, that is to say that first transport block comprises first, second and the 3rd have a snack and look into Zhu's doffer sign indicating number sequence, and second transport block comprises that the 4th, the 5th and the 6th has a snack and look into Zhu's doffer sign indicating number sequence.Clear and definite, the symbol unit that looks into Zhu's doffer sign indicating number sequence of having a snack in first transport block corresponds to respectively from frequency range F
R1In the subcarrier picked out with incremental manner, and the symbol unit that looks into Zhu's doffer sign indicating number sequence of having a snack in second transport block corresponds to respectively from frequency range F
R2In the subcarrier picked out with incremental manner.In addition, described a plurality of in each transport block have a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in three time intervals that continue respectively, that is to say, the first and the 4th has a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in time interval T
1, the second and the 5th have a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in time interval T
2, the 3rd and the 6th have a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in time interval T
3
Be noted that above-mentioned distributed structure can apply to range finding passage or the random access channel in orthogonal multiple frequency division of labor system or the single carrier orthogonal multifrequency division of labor system.
Fig. 8 has a snack according to the described distributed structure at frequency domain of one embodiment of the invention to look into Zhu's doffer sign indicating number sequence schematic diagram.In this embodiment, original Zhu's doffer sign indicating number sequence length of looking into is 6R, and this looks into Zhu's doffer sign indicating number sequence and be divided into six sections according to a transmission length value R, wherein has a snack about the circulation of the unit of the symbol in first three section, can be with reference to the embodiment of Fig. 4 and relevant explanation.Similarly, in this looks into back three sections of Zhu's doffer sign indicating number sequence, transmitter 110 further duplicate second section look into Zhu's doffer sign indicating number sequence first accord with first s
R+1And will circulation have a snack to first section tail end of looking into Zhu's doffer sign indicating number sequence, duplicate the 3rd section look into Zhu's doffer sign indicating number sequence first accord with first s
2R+1And will circulation have a snack the tail end of looking into Zhu's doffer sign indicating number sequence to second section, then duplicate the 4th section look into Zhu's doffer sign indicating number sequence first accord with first s
3R+1And will circulation have a snack to the 3rd section tail end of looking into Zhu's doffer sign indicating number sequence, duplicate the 5th section look into Zhu's doffer sign indicating number sequence first accord with first s
4R+1And will circulation have a snack to the 4th section tail end of looking into Zhu's doffer sign indicating number sequence, duplicate the 6th section look into Zhu's doffer sign indicating number sequence first accord with first s
5R+1And will circulation have a snack the tail end of looking into Zhu's doffer sign indicating number sequence to the 5th section, last, duplicate again first section look into Zhu's doffer sign indicating number sequence first accord with first s
1And the tail end of looking into Zhu's doffer sign indicating number sequence to the 6th section is had a snack in the circulation of inciting somebody to action.Be simplified illustration, this can be had a snack per three sections of looking into Zhu's doffer sign indicating number sequence and be considered as a transport block that wherein the symbol unit of every section sequence corresponds to respectively from frequency range F in first transport block
R1In the subcarrier picked out with incremental manner, and the symbol unit of every section sequence corresponds to respectively from frequency range F in second transport block
R2In the subcarrier picked out with incremental manner.In addition, described a plurality of in each transport block have a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in three time intervals that continue respectively, that is to say, the first and the 4th has a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in time interval T
1, the second and the 5th have a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in time interval T
2, the 3rd and the 6th have a snack and look into Zhu's doffer sign indicating number sequence and be transmitted in time interval T
3
Be noted that above-mentioned distributed structure can apply to range finding passage or the random access channel in orthogonal multiple frequency division of labor system or the single carrier orthogonal multifrequency division of labor system.
Embodiment shown in Fig. 2 A to Fig. 2 C, Fig. 3 to Fig. 5 also can apply to the synchronizing channel in orthogonal multiple frequency division of labor system or the single carrier orthogonal multifrequency division of labor system except can apply to find range passage or random access channel.If transmitter 110 only has the antenna (not shown) that couples in order to the transmission code sequence, then the mode that can adopt as shown in Fig. 2 A to Fig. 2 C, Fig. 3 to Fig. 5 of having a snack of sign indicating number sequence is carried out.Otherwise if transmitter 110 only has a plurality of antenna (not shown) of coupling in order to the transmission code sequence, transmitter 110 can further duplicate and have a snack a yard sequence at frequency domain.Fig. 9 A, Fig. 9 B look into Zhu's doffer sign indicating number sequence schematic diagram according to described use two antennas of one embodiment of the invention having a snack of duplicating of frequency domain.Owing to have multiple antenna, transmitter 110 can be interval at one time interior respectively at a plurality of frequency ranges transmission sign indicating number sequences.For instance, shown in Fig. 9 A, transmitter 110 can use first antenna at frequency range F
R1Middle transmission having a snack shown in Fig. 2 A looked into Zhu's doffer sign indicating number sequence, uses second antenna at frequency range F then
R2Middle transmission having a snack shown in Fig. 2 A looked into the duplicate of Zhu's doffer sign indicating number sequence.Perhaps, shown in Fig. 9 B, transmitter 110 can use first antenna at frequency range F
R1In transmit as shown in Figure 4 have a snack first section that looks into Zhu's doffer sign indicating number sequence, use second antenna at frequency range F then
R2In transmit as shown in Figure 4 have a snack second section that looks into Zhu's doffer sign indicating number sequence ... by that analogy.In other embodiments, the antenna number that is coupled in the transmitter 110 can be more than two.
Figure 10 is the cyclic shift schematic diagram of looking into Zhu's doffer sign indicating number sequence of having a snack according to the described range finding of one embodiment of the invention leading (ranging preamble) sign indicating number.In this embodiment, the symbol identical permutation mode in the range finding lead code can be represented by following formula (1):
wherek＝0，1，...，N
RP-1；n＝0，1，2
X wherein
p(n, k) represent n orthogonal multiple frequency division of labor access (Orthogonal Frequency-DivisionMultiple Access, OFDMA) p of symbol range finding lead code, p represents the index value of p the lead code of finding range in the elementary cell, and this elementary cell refers to the root index value r that looks into Zhu's doffer sign indicating number sequence by one
pThe s that starts at
pThe individual sequence that accords with after unit carries out cyclic shift, N
RPRepresent the range finding preamble length of each orthogonal multiple frequency division of labor access symbol, N
TCSRepresent each orthogonal multiple frequency division of labor access symbol cyclic shift unit on time domain, N
FFTRepresent the size of the sharp leaf conversion of quick Fourier.At N
RPValue be under 72 the situation, one has a snack the Fu Yuanke that looks in Zhu's doffer sign indicating number sequence generally arranges as shown in figure 10, wherein, the former doffer of looking into Zhu sign indicating number sequence comprises 211 symbol units and this and looks into Zhu's doffer sign indicating number sequence and be split into three sections.Have a snack according to this and to look into Zhu's doffer sign indicating number sequence, formula (1) can further launch as following formula (2):
Figure 11 is according to the described transmission method flow chart of one embodiment of the invention.Transmission method of the present invention can be applicable in the radio communication device of transmitter 110 for example, transmit sign indicating number sequence to a receiver in order to see through air interface, and radio communication device and receiver can be supported orthogonal multiple frequency division of labor technology or single carrier orthogonal multifrequency division of labor technology.At the beginning, the radio communication device generation includes a plurality of one of units that accord with and has a snack a yard sequence, and have a snack in yard sequence at this, last symbol unit is the duplicate of first symbol unit, as step S1101, particularly, radio communication device can produce a source code sequence earlier, then by the duplicate circulation of first symbol unit is had a snack to the sequence tail end to extend this yard sequence.After yard sequence was had a snack in generation, radio communication device was further had a snack a yard sequence through air interface with this and is sent to receiver, as step S1102, thus, promptly successfully finishes the sign indicating number sequence transmission program between radio communication device and receiver.About having a snack of sign indicating number sequence, can do in fact by above-mentioned various embodiments, for instance, at range finding passage or the random access channel in orthogonal multiple frequency division of labor system or the single carrier orthogonal multifrequency division of labor system, can be shown in Fig. 2 A to Fig. 2 C, the tail end to sequence is had a snack in first symbol unit of replicating original sign indicating number sequence and the circulation of inciting somebody to action, even can further duplicate this and have a snack a yard sequence in time domain as shown in Figure 3.Perhaps can as shown in Figure 4 the source code sequence be divided into multistage, and have a snack tail end, even can on time domain, duplicate this and have a snack a yard sequence as shown in Figure 5 to the last period with circulating after first the duplicating of first symbol in each section.In another embodiment, when distributed structure is used in range finding passage or random access channel, can as shown in Figure 6 the mode of having a snack shown in Fig. 2 A to Fig. 2 C be used in each transport block, perhaps can extend the mode of having a snack shown in Figure 4 of using as shown in Figure 8.Particularly, under the situation that a plurality of source code sequences are arranged, the mode of having a snack shown in Fig. 2 A to Fig. 2 C can be applicable to each source code sequence, and has a snack yard sequence alignment on time domain in each transport block.In other embodiments, when this has a snack a yard sequence when being applied to synchronizing channel and radio communication device and having a plurality of antenna, can be shown in Fig. 9 A, re-use each other antenna after using the mode of having a snack of Fig. 2 A to Fig. 2 C that the sign indicating number sequence is had a snack, duplicated and transmit; Or can be shown in Fig. 9 B, re-use each other antenna after the mode of having a snack of use Fig. 4 is cut apart the sign indicating number sequence, have a snack and transmit.Be noted that this yard sequence can be looks into Zhu's doffer sign indicating number sequence, general class purt sign indicating number sequence, constant amplitude zero auto-correlation sign indicating number sequence.
With the range finding lead code look into Zhu's doffer sign indicating number sequence, looking into Zhu's doffer sign indicating number sequence is more than one (complex-valued) mathematical sequence, and when being applied to radio signal, looks into the electromagnetic signal that Zhu's doffer sign indicating number sequence can produce constant amplitude.Specifically, the sign indicating number sequence that circulation of the present invention is had a snack has the characteristic of a practicality, this characteristic is meant that symbol unit wherein is correlated with (meaning is that each symbol unit all keeps quadrature with other symbol unit) for zero crossing each other, makes receiver this radio signal can be reduced.Cyclic shift mode about the range finding lead code, can be with reference to the related description of Figure 10, in Figure 10, the range finding lead code look into Zhu's doffer sign indicating number sequence after cutting apart, duplicate and circulate according to the mode of Fig. 4 and have a snack, be noted that, when there is remaining letter groove in the final stage tail end after cutting apart, reproducible have a snack continuous symbol unit after the symbol unit and will have a snack to remaining letter groove, can in remaining letter groove, the value of having a snack be zero symbol unit perhaps.In other embodiments, the cyclic shift mode of range finding lead code can adopt the embodiment shown in Fig. 2 A to Fig. 2 C and Fig. 3, Fig. 5, Fig. 6 A, Fig. 6 B, Fig. 9 A, Fig. 9 B.
Though the present invention discloses as above with various embodiment, however its only for example with reference to but not in order to limiting scope of the present invention, any those of ordinary skills, without departing from the spirit and scope of the present invention, when doing a little change and retouching.For example: can be according to any evolution technology that has adopted orthogonal multiple frequency division of labor technology, single carrier orthogonal multifrequency division of labor technology or the division of labor of other orthogonal multiple frequency (wireless communication standard that comprises wireless zone communication, super wide frequency communication, global intercommunication microwave access, radio wideband (Wireless Broadband, WiBro) and technology such as Long Term Evolution) as communicating by letter between the radio communication device of transmitter 110 and the receiver.Therefore the foregoing description is not in order to limiting scope of the present invention, and protection scope of the present invention is as the criterion when looking the scope that defines with accompanying Claim.
Claims (26)
1. a transmission method is applicable to a radio communication device, comprising:
Generation comprises that one of a plurality of symbol units have a snack a yard sequence, and last symbol unit in the wherein above-mentioned symbol unit is the first duplicate of first symbol; And
See through an air interface the above-mentioned yard sequence of having a snack is sent to a receiver.
2. transmission method as claimed in claim 1, wherein above-mentioned receiver sees through above-mentioned air interface and receives the above-mentioned yard sequence of having a snack, and carries out Differential Detection at the above-mentioned yard sequence of having a snack.
3. transmission method as claimed in claim 1, wherein above-mentioned above-mentioned symbol unit of having a snack in yard sequence corresponds to a plurality of first subcarriers respectively.
4. transmission method as claimed in claim 3, wherein above-mentioned first subcarrier with a continuous increasing order or a continuous descending order by being selected in the frequency domain.
5. transmission method as claimed in claim 3, the wherein above-mentioned yard sequence of having a snack is through using one first antenna to transmit, and above-mentioned transmission method more comprises duplicating above-mentionedly has a snack yard sequence and uses one second antenna to transmit the above-mentioned yard sequence of having a snack duplicated, and the above-mentioned symbol unit of having a snack in yard sequence of being duplicated corresponds to many second subcarriers respectively.
6. transmission method as claimed in claim 5, wherein above-mentioned first subcarrier and above-mentioned second subcarrier with a continuous increasing order or a continuous descending order respectively by being selected in the frequency domain.
7. transmission method as claimed in claim 1, the wherein above-mentioned yard sequence of having a snack is transmitted in a very first time interval, and above-mentioned symbol unit corresponds to respectively with a continuous increasing order or a continuous descending order by many first subcarriers of being selected in the frequency domain, and above-mentioned transmission method more comprises duplicating above-mentionedly has a snack yard sequence and one second time interval after above-mentioned very first time interval transmits the above-mentioned yard sequence of having a snack of being duplicated.
8. transmission method as claimed in claim 7, more comprise duplicating and above-mentionedly have a snack yard sequence and transmit the above-mentioned yard sequence of having a snack of being duplicated, and the above-mentioned symbol unit of having a snack in yard sequence of being duplicated corresponds to respectively with a continuous increasing order or a continuous descending order by many second subcarriers of being selected in the frequency domain in interval and above-mentioned second time interval of above-mentioned very first time.
9. transmission method as claimed in claim 1, more comprise and determine a transmission length and the above-mentioned yard sequence of having a snack is divided at least two sections according to above-mentioned transmission length, wherein the symbol of last in every section unit be the duplicate of the first symbol unit of next section, except last symbol unit of final stage be first section first accord with first duplicate.
10. transmission method as claimed in claim 9, wherein above-mentioned first section of having a snack yard sequence is transmitted in a very first time interval, and symbol unit wherein corresponds to respectively with a continuous increasing order or a continuous descending order by many first subcarriers of being selected in the frequency domain, and above-mentioned second section of having a snack yard sequence be transmitted in one second time interval after the above-mentioned very first time interval, and symbol unit wherein corresponds to above-mentioned first subcarrier respectively.
11. transmission method as claimed in claim 10, more comprise and duplicate above-mentioned first section and second section of having a snack yard sequence, and respectively at one the 3rd time interval after above-mentioned second time interval and one the 4th time interval after above-mentioned the 3rd time interval transmit duplicated above-mentioned have a snack first section of yard sequence with second section, and duplicated above-mentioned have a snack first section of yard sequence with second section in symbol unit correspond to above-mentioned first subcarrier respectively.
12. transmission method as claimed in claim 9, symbol unit in wherein above-mentioned first section of transmitting corresponds to respectively with a continuous increasing order or a continuous descending order by a plurality of first subcarriers of being selected in the frequency domain, and the symbol unit in above-mentioned second section of transmitting corresponds to respectively with a continuous increasing order or a continuous descending order by a plurality of second subcarriers of being selected in the frequency domain.
13. transmission method as claimed in claim 12, wherein above-mentioned first section of having a snack yard sequence uses one first antenna to transmit, and above-mentioned second section of having a snack yard sequence uses one second antenna to transmit.
14. transmission method as claimed in claim 1, the wherein above-mentioned yard sequence of having a snack is transmitted in range finding passage, a random access channel or a synchronous passage in orthogonal multiple frequency division of labor environment or the single carrier orthogonal multifrequency division of labor environment.
15. transmission method as claimed in claim 1, the wherein above-mentioned yard sequence of having a snack is looked into Zhu's doffer sign indicating number sequence, a general class purt sign indicating number sequence or a constant amplitude zero auto-correlation sign indicating number sequence by one and is produced.
16. a transmission method is applicable to the radio communication device that an orthogonal multiple frequency is divided the work, and comprising:
Generation comprises having a snack and look into Zhu's doffer sign indicating number sequence of a plurality of symbol units of a range finding lead code, and last symbol unit in the wherein above-mentioned symbol unit is the first duplicate of first symbol; And
Seeing through an air interface looks into above-mentioned having a snack Zhu's doffer sign indicating number sequence and is sent to a receiver.
17. transmission method as claimed in claim 16, wherein above-mentioned receiver see through above-mentioned the having a snack of above-mentioned air interface reception and look into Zhu's doffer sign indicating number sequence, and look into Zhu's doffer sign indicating number sequence execution Differential Detection at above-mentioned having a snack.
18. transmission method as claimed in claim 16, the wherein above-mentioned above-mentioned symbol unit that looks in Zhu's doffer sign indicating number sequence of having a snack corresponds to a plurality of first subcarriers respectively.
19. transmission method as claimed in claim 18, wherein above-mentioned having a snack looked into Zhu's doffer sign indicating number sequence through using one first antenna to transmit, and above-mentioned transmission method comprises that more duplicating above-mentioned having a snack looks into Zhu's doffer sign indicating number sequence and use one second antenna to transmit above-mentioned the having a snack duplicated and look into Zhu's doffer sign indicating number sequence, and the above-mentioned symbol unit that looks in Zhu's doffer sign indicating number sequence of having a snack of being duplicated corresponds to a plurality of second subcarriers respectively.
20. transmission method as claimed in claim 16, wherein above-mentioned having a snack looked into Zhu's doffer sign indicating number sequence and is transmitted in a very first time interval, and above-mentioned symbol unit corresponds to respectively with a continuous increasing order or a continuous descending order by a plurality of first subcarriers of being selected in the frequency domain, above-mentioned transmission method comprises that more duplicating above-mentioned having a snack looks into Zhu's doffer sign indicating number sequence and one second time interval after above-mentioned very first time interval and transmit above-mentioned the having a snack of being duplicated and look into Zhu's doffer sign indicating number sequence, and the above-mentioned symbol unit that looks in Zhu's doffer sign indicating number sequence of having a snack of being duplicated corresponds to above-mentioned first subcarrier respectively.
21. transmission method as claimed in claim 20, more being included in above-mentioned very first time intervally transmits above-mentioned the having a snack of being duplicated once more with above-mentioned second time interval and looks into Zhu's doffer sign indicating number sequence, but the above-mentioned symbol unit that looks in Zhu's doffer sign indicating number sequence of having a snack that transmits once more corresponds to respectively with above-mentioned continuous increasing order or above-mentioned continuous descending order by a plurality of second subcarriers of being selected in the frequency domain.
22. transmission method as claimed in claim 16, more comprise and determine a transmission length and above-mentioned having a snack looked into Zhu's doffer sign indicating number sequence and be divided at least two sections according to above-mentioned transmission length, wherein the symbol of last in every section unit be the duplicate of the first symbol unit of next section, except last symbol unit of final stage be first section first accord with first duplicate.
23. transmission method as claimed in claim 22, wherein above-mentioned first section of looking into Zhu's doffer sign indicating number sequence had a snack is transmitted in a very first time interval, and symbol unit wherein corresponds to respectively with a continuous increasing order or a continuous descending order by a plurality of first subcarriers of being selected in the frequency domain, and above-mentioned second section of looking into Zhu's doffer sign indicating number sequence had a snack be transmitted in one second time interval after the above-mentioned very first time interval, and symbol unit wherein corresponds to above-mentioned first subcarrier respectively.
24. transmission method as claimed in claim 23, more comprise duplicate above-mentioned have a snack first section of looking into Zhu's doffer sign indicating number sequence with second section, and respectively at one the 3rd time interval after above-mentioned second time interval and one the 4th time interval after above-mentioned the 3rd time interval transmit duplicated above-mentioned have a snack first section of looking into Zhu's doffer sign indicating number sequence with second section, and above-mentioned first section of looking into Zhu's doffer sign indicating number sequence had a snack that is duplicated corresponds to above-mentioned first subcarrier respectively with symbol unit in second section.
25. transmission method as claimed in claim 22, symbol unit in wherein above-mentioned first section of transmitting corresponds to respectively with a continuous increasing order or a continuous descending order by a plurality of first subcarriers of being selected in the frequency domain, and the symbol unit in above-mentioned second section of transmitting corresponds to respectively with a continuous increasing order or a continuous descending order by a plurality of second subcarriers of being selected in the frequency domain.
26. transmission method as claimed in claim 25, wherein above-mentioned first section use one first antenna looking into Zhu's doffer sign indicating number sequence of having a snack transmits, and above-mentioned second section use one second antenna looking into Zhu's doffer sign indicating number sequence of having a snack transmits.
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| CN2010102133758A CN102299881A (en) | 2010-06-22 | 2010-06-22 | transmission method |
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| US20050152314A1 (en) * | 2003-11-04 | 2005-07-14 | Qinfang Sun | Multiple-input multiple output system and method |
| US20070183307A1 (en) * | 2006-02-08 | 2007-08-09 | Hidenori Akita | Method and apparatus for initial acquisition and cell search for an OFDMA system |
| US20080107086A1 (en) * | 2006-11-06 | 2008-05-08 | Motorola, Inc. | Method and apparatus for fast cell search |
| CN101341708A (en) * | 2005-12-20 | 2009-01-07 | Lg电子株式会社 | Method of generating code sequence and method of transmitting signal using the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050152314A1 (en) * | 2003-11-04 | 2005-07-14 | Qinfang Sun | Multiple-input multiple output system and method |
| CN101341708A (en) * | 2005-12-20 | 2009-01-07 | Lg电子株式会社 | Method of generating code sequence and method of transmitting signal using the same |
| US20070183307A1 (en) * | 2006-02-08 | 2007-08-09 | Hidenori Akita | Method and apparatus for initial acquisition and cell search for an OFDMA system |
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Application publication date: 20111228 |