CN107528802A - A kind of hard-decision method using single antenna solution double antenna space division multiplexing - Google Patents

A kind of hard-decision method using single antenna solution double antenna space division multiplexing Download PDF

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CN107528802A
CN107528802A CN201710559090.1A CN201710559090A CN107528802A CN 107528802 A CN107528802 A CN 107528802A CN 201710559090 A CN201710559090 A CN 201710559090A CN 107528802 A CN107528802 A CN 107528802A
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data
antenna
channel estimation
mrow
reference constellation
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回海生
付磊
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Guangzhou Huiruisitong Information Technology Co Ltd
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Guangzhou Huiruisitong Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/345—Modifications of the signal space to allow the transmission of additional information
    • H04L27/3461—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel
    • H04L27/3483—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel using a modulation of the constellation points

Abstract

The invention discloses a kind of hard-decision method using single antenna solution double antenna space division multiplexing, this method are specific as follows：By carrying out sampling filter to data of eating dishes without rice or wine, the LTE downlink datas of pending single antenna reception are obtained；Channel estimation is carried out to two emitting antennas Tx0 and Tx1 according to the CRS of two emission ports using single antenna reception data, channel estimation value is h respectivelyTx0And hTx1；Reference constellation figure for single antenna solution double antenna space division multiplexing data is generated according to the channel estimation of single antenna reception data and two emission ports；By LTE downlink datas according to cell configuration and resource allocation conditions, LTE data to be demodulated are isolated；The reference constellation figure of LTE data inputs generation to be demodulated will be isolated, by judging that reference constellation point apart from the minimum distance of data to be demodulated, obtains hard bit data to be decoded in reference constellation figure；Turbo decoders are sent into the hard bit decoding of generation and enter row decoding, finally obtain required coded-bit.

Description

A kind of hard-decision method using single antenna solution double antenna space division multiplexing
Technical field
The present invention relates to wireless communication technology field, and in particular to a kind of to use the hard of single antenna solution double antenna space division multiplexing Decision method.
Background technology
LTE (Long Term Evolution) is used as fourth generation mobile communication technology, and its business application is highly developed With it is extensive.One of LTE key technology is exactly multiple-input and multiple-output (Multi Input Multi Output, MIMO) antenna skill Art.In LTE protocol R10 versions, its MIMO transmission mode (Transmission Mode, TM) one shares 9 kinds, wherein TM3 For double antenna space division multiplexing pattern, that is, the MIMO linkage of larger handling capacity is provided, and taken into account stability simultaneously.
It is as shown in Figure 1 for the coding flow of LTE double antenna space division multiplexings under TM3 patterns.First by after two codings Codeword data, each scrambled by scrambling module, the exponent number then modulated as needed, mainly QPSK (Quadrature Phase Shift Keying), 16QAM (Quadrature Amplitude Modulation) or 64QAM Modulation, the modulation and mapping of planisphere are each carried out, form the symbol of respective modulation, the symbol modulated is then subjected to layer After mapping, precoding, RE mappings, carry out inverse Fourier transform (IFFT) computing and frequency-region signal is transformed into time domain, and respectively Launched on two antenna ports.
The double antenna data under TM3 patterns are can be seen that from above-mentioned transmitting terminal flow, every antenna is responsible for code word all the way The transmitting of data, the data of two antenna transmittings are entirely different, under normal circumstances, it is necessary to send stream according to as defined in agreement Journey, corresponding receiver of the design with two receives links are used for the decoding of TM3 space division multiplexings.
According to the flow of transmitting terminal data encoding, the signal that receiving terminal receives can be written as
Formula：
Y=H*W*D*U*X (1)
Wherein W is pre-coding matrix, and D (i) and U are used to add circulation delay to the data of different antennae port, its each value Such as following formula：
H is channel estimate matrix in formula (1), and the matrix contains 4 channel estimation values, is h respectivelyRx0,Tx0、hRx0,Tx1、 hRx1,Tx0And hRx1,Tx1, this four values represent channel estimations of the reception antenna Rx0 to transmission antenna Tx0, reception antenna respectively Rx0 is to transmission antenna Tx1 channel estimation, reception antenna Rx1 to transmission antenna Tx0 channel estimation, and reception antenna Rx1 To transmission antenna Tx1 channel estimation.
Finally bring H, W, D (i), U, Y into formula (1), and arrange：
Solved to obtain two each spontaneous emissions of antenna of the space division multiplexing launched by double antenna according to the formula can Symbol sebolic addressing xTx0And x (i)Tx1(i) symbol data, now obtained be transmitting terminal through ovennodulation map caused by constellation data, Turbo decodings can be carried out after being demodulated to the data.
According to formula (3) as can be seen that being carried out using double antenna space division multiplexing data of traditional method to transmission mode 3 Decoding is, it is necessary to the reception data y of 2 reception antennasRx0And y (i)Rx1(i), the channel of each transmitting antenna is estimated with each data that receive Count hRx0,Tx0、hRx0,Tx1、hRx1,Tx0And hRx1,Tx1Value, if it can thus be appreciated that using single antenna or the software wireless of single receives link Electric receiver system, then it can not use conventional methods and LTE double antenna space division multiplexing data are decoded.
At present, many existing software radios employ single receives link design, if using above-mentioned double antenna The principle of decoding LTE space division multiplexings is received, can not be realized for the receiver of single receives link, and if design and manufacture When for decoding double antenna SDM system, be just necessarily designed to double reception link, so add design difficulty and Design cost.
The content of the invention
The invention aims to solve drawbacks described above of the prior art, there is provided one kind uses single antenna solution double antenna The hard-decision method of space division multiplexing, to solve the problems, such as that single receives link can not decode double antenna space division multiplexing, and single reception chain Road can effectively reduce design complexities, reduce equipment cost.
The purpose of the present invention can be reached by adopting the following technical scheme that：
A kind of hard-decision method using single antenna solution double antenna space division multiplexing, described hard-decision method include：
LTE downlink data obtaining steps, data of eating dishes without rice or wine are obtained, the frequency where signal is entered to data by front end receiver Row sampling filter, obtain the LTE downlink datas of pending single antenna reception；
Channel estimation steps, using single antenna reception data according to the CRS of two emission ports to two emitting antennas Tx0 Channel estimation is carried out with Tx1, channel estimation value is h respectivelyTx0And hTx1, reception antenna Rx is represented respectively to transmission antenna Tx0's Channel estimation, reception antenna Rx are to transmission antenna Tx1 channel estimation；
Reference constellation figure generation step, generates according to the channel estimation of single antenna reception data and two emission ports and is used for The reference constellation figure of single antenna solution double antenna space division multiplexing data；
LTE data separatings step to be demodulated, by LTE downlink datas according to cell configuration and resource allocation conditions, is isolated LTE data to be demodulated；
Hard bit generation step, the described reference constellation figure isolated described in LTE data inputs to be demodulated is generated Step generation reference constellation figure, judge reference constellation figure in reference constellation point apart from data to be demodulated minimum distance, so as to Obtain hard bit data to be decoded；
Turbo decoding procedures, the hard bit data of generation are sent into Turbo decoders and enter row decoding, are finally obtained required Coded-bit.
Further, channel estimation value h in described channel estimation stepsTx0And hTx1Calculating, according to CRS be LTE association The known signal sequence that transmitting terminal and receiving terminal are appointed each other in view, can release H according to transmission model is：
H=(Y-n) * X-1
Due to X, it is known that i.e. CRS signal sequences are disappeared by noise estimation, it is known that Y is to receive end data, it is known that n is noise Remove or approximation is ignored, the channel estimation of each relatively each transmitting antenna of reception antenna is solved according to above formula.
Further, in the way of the CRS resource impacts arranged in advance, two transmitting days are extracted from the receiving terminal of antenna The CRS signal sequences of line, transmitting antenna Tx0 and transmitting antenna Tx1 CRS signals are distributed across on LTE running time-frequency resource It is independent of each other, channel is carried out according to the corresponding CRS data being drawn into respectively when each reception antenna carries out channel estimation Estimation, i.e., carry out channel estimation to Tx0 CRS signal sequences with reception antenna Rx data, that is, h be calculatedTx0, with reception Antenna Rx data carry out channel estimation to Tx1 CRS signal sequences, that is, h is calculatedTx1。
Further, in described reference constellation figure generation step, due to there was only a reception antenna, the public affairs of reception signal Formula is write as：
H in above formulaTx0And hTx1Data y (i) is respectively received to transmitting antenna Tx0 and transmitting antenna Tx1 according to respective The channel estimation value that CRS signal sequences are carried out, and xTx0And x (i)Tx1(i) it is unknown, by xTx0And x (i)Tx1(i) regard as one it is unknown Number, xTx0And x (i)Tx1(i) it is the respective bit information by two emitting antennas when being launched according to coding rule It is mapped in modulation constellation.
Further, when modulation uses QPSK, unknown number to be solved either xTx0Or x (i)Tx1(i) carry out Constellation will be each respectively mapped in 4 constellation points of QPSK modulation constellations when modulation according to respective bit stream, Each point is by a plural am, m=0,1,2,3 represents, brings these plural numbers into formula： The combination of 16 points is obtained, reference constellation point is respectively A0-A150, (xxT(i), xTx1(i) value) is respectively (00,00), (00,01)、(00,10)、(00,11)、(01,00)、(01,01)、(01,10)、(01,11)、(10,00)、(10,01)、(10, 10), (10,11), (11,00), (11,01), (11,10), (11,11), calculation expression are respectively a0*hTx0+a0*hTx1、a0* hTx0+a1*hTx1、a0*hTx0+a2*hTx1、a0*hTx0+a3*hTx1、a1*hTx0+a0*hTx1、a1*hTx0+a1*hTx1、a1*hTx0+a2*hTx1、 a1*hTx0+a3*hTx1、a2*hTx0+a0*hTx1、a2*hTx0+a1*hTx1、a2*hTx0+a2*hTx1、a2*hTx0+a3*hTx1、a3*hTx0+a0* hTx1、a3*hTx0+a1*hTx1、a3*hTx0+a2*hTx1、a3*hTx0+a3*hTx1；
With QPSK standard constellation points a0~a3Complex values and two transmitting antennas channel estimation htx1、htx0The A of generation0 ~A15As reference constellation point, each reference constellation point is by xTx0And x (i)Tx1(i) fallen into after respective dissemination channel New space, whole process approximation regard a coordinate transformation process as, two unknown number xTx0And x (i)Tx1(i) QPSK is asked Solution, merging regard 1 16QAM for possessing 4 bit modulations unknown number as to solve.
Further, described hard bit generation step is specific as follows：
Using the reference constellation figure generated in described reference constellation figure generation step as preferable under particular channel estimation The position of receiving point, actual reception signal and desired received signal are subjected to range estimation, closest reference constellation point institute Corresponding binary data is bit data to be decoded, judges that reference constellation point is apart from data to be demodulated in reference constellation figure Minimum distance, so as to obtain hard bit data to be decoded.
The present invention is had the following advantages relative to prior art and effect：
The present invention solves the problems, such as single antenna solution double antenna space division multiplexing, is that the single-stranded pipeline equipment solution double antenna of single antenna is empty Multiplex data is divided to provide method.Hard-decision method designed by the present invention is easy and effective, amount of calculation is few, do not increase hardware into The purpose of solution double antenna space division multiplexing data can be reached in the case of this.
Brief description of the drawings
Fig. 1 is TM3 double antennas transmitting procedure schematic diagram in LTE；
Fig. 2 is this method for 2x2MIMO TM3 channel estimation graphs of a relation in LTE；
Fig. 3 is the locations drawing of the CRS in LTE resource grids under double antenna；
Fig. 4 is QPSK modulation constellations；
Fig. 5 is 16QAM modulation constellations；
Fig. 6 is the hard decision schematic diagram of single antenna solution double antenna space division multiplexing.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Embodiment one
Present embodiment discloses a kind of hard-decision method using single antenna solution double antenna space division multiplexing, specifically include：
S1, channel estimation steps；
S2, reference constellation figure generation step；
S3, hard bit generation step；
S4, Turbo decoding procedure.
Channel estimation steps, two emitting antennas is entered according to the CRS of two emission ports using single antenna reception data Row channel estimation, channel estimation value are h respectivelyTx0And hTx1, reception antenna Rx is represented respectively, and transmission antenna Tx0 channel is estimated Meter, reception antenna Rx are as shown in Figure 2 to transmission antenna Tx1 channel estimation, its channel estimation relation.
This 2 channel estimation value hTx0And hTx1, all it is cell reference signals (the Cell Reference by LTE Signal, CRS) be calculated.For TM3, the CRS reference signals that two different antennae ports are given in LTE protocol exist Time domain and frequency domain position in LTE resource grids, as shown in Figure 3.
Calculating for channel estimation, it is the known letter that transmitting terminal and receiving terminal are appointed each other in LTE protocol according to CRS Number sequence, can release H according to transmission model is：
H=(Y-n) * X-1 (4)
Due to X, it is known that i.e. CRS sequences can be estimated disappear, it is known that Y is to receive end data, it is known that n is noise by noise Remove or approximation is ignored, therefore the channel estimation of each relatively each transmitting antenna of reception antenna can be solved according to formula (4).
The CRS signals of two transmitting antennas can be extracted from the receiving terminal of antenna in the way of Fig. 3 CRS resource impacts, Transmitting antenna Tx0 and transmitting antenna Tx1 CRS signals are independent of each other on the running time-frequency resource for be distributed across LTE, therefore are respectively connect Receive when antenna carries out channel estimation and carry out channel estimation according to the corresponding CRS data being drawn into respectively, i.e., with reception day Line Rx data carry out channel estimation to Tx0 CRS signals, that is, h is calculatedTx0, with reception antenna Rx data to Tx1's CRS signals carry out channel estimation, that is, h is calculatedTx1。
Reference constellation figure generation step, generated according to single antenna reception data and the channel estimation of two emission ports current The reference constellation figure of data.
Due to there was only a reception antenna, the formula of reception signal can be write as：
H in formula (5)Tx0And hTx1Data y (i) is respectively received to transmitting antenna Tx0 and transmitting antenna Tx1 according to respective The channel estimation value that CRS is carried out.And xTx0And x (i)Tx1(i) it is unknown, under normal circumstances, can not solution to two unknown numbers.For Reach the purpose of demodulation, at this moment by xTx0And x (i)Tx1(i) unknown number is regarded as.
xTx0And x (i)Tx1(i) be exactly in fact when being launched two emitting antennas respective bit information by It is mapped to according to coding rule in modulation constellation.By taking QPSK as an example, QPSK constellation point such as Fig. 5.
Unknown number to be solved either xTx0Or x (i)Tx1(i) each will be according to when planetary modulation is entered Respective bit stream is respectively mapped on Fig. 5 in 4 constellation points, and each point is by a plural am, m=0,1,2,3 represents, will These plural numbers bring formula (5) into, obtain the combination such as tables 1 of 16 points to：
The double antenna space division multiplexing QPSK reference constellation points of table 1.
QPSK standard constellation points a is used in table0~a3Complex values and two transmitting antennas channel estimationhtx1、htx0It is raw Into A0~A15As reference constellation point, each reference constellation point is by xTx0And x (i)Tx1(i) respective dissemination channel is passed through New space is fallen into afterwards, and whole process approximation regards a coordinate transformation process as, two unknown number xTx0And x (i)Tx1(i) QPSK is solved, and merging regards 1 " 16QAM " unknown number for possessing 4 bit modulations as to solve.Double-current QPSK is modulated, conversion Modulate and solve into single current 16QAM.
Hard bit generation step, the reference constellation figure generated according to current reception data and current data, which calculates, to be used for The hard bit data of Turbo decodings.Still by taking the QPSK space division multiplexings demodulation of double antenna as an example, the reference constellation figure of generation, phase When in the positions of the preferable receiving point under particular channel estimation, actual reception signal and desired received signal being entered into row distance and sentenced Fixed, the binary data corresponding to closest reference constellation point is bit data to be decoded, these binary data pair It should be related to as shown in table 1.
Turbo decoding procedures, Turbo decoders are sent into the hard bit decoding of generation and enter row decoding, are finally obtained required Coded-bit.
Embodiment two
Present embodiment discloses a kind of hard-decision method using single antenna solution double antenna space division multiplexing, as shown in fig. 6, tool Body includes：
Step T1, data of eating dishes without rice or wine are obtained, the frequency where signal carries out sampling filter to data by front end receiver, obtains To the LTE downlink datas of pending single antenna reception.
It is step T2 and step T3, each specific according to TX ports 0 and TX ports 1 in the LTE downlink datas received RB and character position are extracted for the CRS signals to two emitting antennas TX0 and TX1 channel estimation.
Step T4 and step T5, channel estimation steps, CRS pairs using single antenna reception data according to two emission ports Two emitting antennas carries out channel.
Step T7 is reference constellation figure generation step, according to the step T4 and step T5 channel estimations generated and current tune The ideal constellation of mode processed such as Fig. 4 QPSK constellation point, generates the reference constellation for single antenna solution double antenna space division multiplexing Figure.
Step T6 according to cell configuration and resource allocation conditions, isolates the downlink data that step T1 is obtained to be demodulated LTE data.
The reference constellation figure that step T8 is generated by input step T7, and the data to be demodulated that step T6 is separated, The minimum distance of reference constellation point distance and data to be demodulated in reference constellation figure is judged, so as to obtain hard bit number to be decoded According to..
Step T9Turbo is decoded, and Turbo decodings are carried out so as to obtain hard bit data to the hard bit of step T8 generations.
Above-described embodiment is the preferable embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment Limitation, other any Spirit Essences without departing from the present invention with made under principle change, modification, replacement, combine, simplification, Equivalent substitute mode is should be, is included within protection scope of the present invention.

Claims (6)

  1. A kind of 1. hard-decision method using single antenna solution double antenna space division multiplexing, it is characterised in that described hard-decision method Including：
    LTE downlink data obtaining steps, data of eating dishes without rice or wine are obtained, the frequency where signal is adopted to data by front end receiver Sample filters, and obtains the LTE downlink datas of pending single antenna reception；
    Channel estimation steps, using single antenna reception data according to the CRS of two emission ports to two emitting antennas Tx0 and Tx1 carries out channel estimation, and channel estimation value is h respectivelyTx0And hTx1, letters of the reception antenna Rx to transmission antenna Tx0 is represented respectively Road estimation, reception antenna Rx are to transmission antenna Tx1 channel estimation；
    Reference constellation figure generation step, is generated for Dan Tian according to the channel estimation of single antenna reception data and two emission ports The reference constellation figure of line solution double antenna space division multiplexing data；
    LTE data separatings step to be demodulated, by LTE downlink datas according to cell configuration and resource allocation conditions, isolate and wait to solve The LTE data of tune；
    Hard bit generation step, by the described reference constellation figure generation step isolated described in LTE data inputs to be demodulated The reference constellation figure of generation, judge reference constellation figure in reference constellation point apart from data to be demodulated minimum distance, so as to obtain Hard bit data to be decoded；
    Turbo decoding procedures, the hard bit data of generation are sent into Turbo decoders and enter row decoding, finally obtain required volume Code bit.
  2. 2. a kind of hard-decision method using single antenna solution double antenna space division multiplexing according to claim 1, its feature exist In,
    Channel estimation value h in described channel estimation stepsTx0And hTx1Calculating, be transmitting terminal and to be connect in LTE protocol according to CRS The known signal sequence that receiving end is appointed each other, can release H according to transmission model is：
    H=(Y-n) * X-1
    Due to X, it is known that i.e. CRS signal sequences are, it is known that Y is to receive end data, it is known that n is noise, estimate to eliminate by noise or Person's approximation is ignored, and the channel estimation of each relatively each transmitting antenna of reception antenna is solved according to above formula.
  3. 3. a kind of hard-decision method using single antenna solution double antenna space division multiplexing according to claim 2, its feature exist In in the way of the CRS resource impacts arranged in advance, from the CRS signal sequences of receiving terminal two transmitting antennas of extraction of antenna Row, transmitting antenna Tx0 and transmitting antenna Tx1 CRS signals are independent of each other on the running time-frequency resource for be distributed across LTE, each Channel estimation is carried out according to the corresponding CRS data being drawn into respectively when reception antenna carries out channel estimation, i.e., with reception Antenna Rx data carry out channel estimation to Tx0 CRS signal sequences, that is, h is calculatedTx0, with reception antenna Rx data pair Tx1 CRS signal sequences carry out channel estimation, that is, h is calculatedTx1。
  4. 4. a kind of hard-decision method using single antenna solution double antenna space division multiplexing according to claim 1, its feature exist In in described reference constellation figure generation step, due to there was only a reception antenna, the formula of reception signal is write as：
    <mrow> <mi>y</mi> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> <mo>=</mo> <mo>&amp;lsqb;</mo> <mtable> <mtr> <mtd> <msub> <mi>h</mi> <mrow> <mi>T</mi> <mi>x</mi> <mn>0</mn> </mrow> </msub> </mtd> <mtd> <msub> <mi>h</mi> <mrow> <mi>T</mi> <mi>x</mi> <mn>1</mn> </mrow> </msub> </mtd> </mtr> </mtable> <mo>&amp;rsqb;</mo> <mfenced open = "[" close = "]"> <mtable> <mtr> <mtd> <mrow> <msub> <mi>x</mi> <mrow> <mi>T</mi> <mi>x</mi> <mn>0</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <msub> <mi>x</mi> <mrow> <mi>T</mi> <mi>x</mi> <mn>1</mn> </mrow> </msub> <mrow> <mo>(</mo> <mi>i</mi> <mo>)</mo> </mrow> </mrow> </mtd> </mtr> </mtable> </mfenced> </mrow>
    H in above formulaTx0And hTx1Data y (i) is respectively received to believe transmitting antenna Tx0 and transmitting antenna Tx1 according to respective CRS The channel estimation value that number sequence is carried out, and xTx0And x (i)Tx1(i) it is unknown, by xTx0And x (i)Tx1(i) unknown number is regarded as, xTx0And x (i)Tx1(i) it is to reflect the respective bit information of two emitting antennas according to coding rule when being launched It is mapped in modulation constellation.
  5. 5. a kind of hard-decision method using single antenna solution double antenna space division multiplexing according to claim 4, its feature exist In, when modulation uses QPSK, unknown number to be solved either xTx0Or x (i)Tx1(i) when planetary modulation is entered Each to be respectively mapped to according to respective bit stream in 4 constellation points of QPSK modulation constellations, each point is by one Plural am, m=0,1,2,3 represents, brings these plural numbers into formula：Obtain the group of 16 points Close, reference constellation point is respectively A0-A15, (xT(i), xTx1(i) value) be respectively (00,00), (00,01), (00,10), (00,11)、(01,00)、(01,01)、(01,10)、(01,11)、(10,00)、(10,01)、(10,10)、(10,11)、(11, 00), (11,01), (11,10), (11,11), calculation expression are respectively a0*hTx0+a0*hTx1、a0*hTx0+a1*hTx1、a0*hTx0+ a2*hTx1、a0*hTx0+a3*hTx1、a1*hTx0+a0*hTx1、a1*hTx0+a1*hTx1、a1*hTx0+a2*hTx1、a1*hTx0+a3*hTx1、a2* hTx0+a0*hTx1、a2*hTx0+a1*hTx1、a2*hTx0+a2*hTx1、a2*hTx0+a3*hTx1、a3*hTx0+a0*hTx1、a3*hTx0+a1*hTx1、 a3*hTx0+a2*hTx1、a3*hTx0+a3*hTx1；
    With QPSK standard constellation points a0~a3Complex values and two transmitting antennas channel estimation htx1、htx0The A of generation0~A15 As reference constellation point, each reference constellation point is by xTx0And x (i)Tx1(i) fallen into after respective dissemination channel new Space, whole process approximation regard a coordinate transformation process as, two unknown number xTx0And x (i)Tx1(i) QPSK is solved, and is closed And 1 16QAM for possessing 4 bit modulations unknown number is regarded as to solve.
  6. 6. a kind of hard-decision method using single antenna solution double antenna space division multiplexing according to claim 1, its feature exist In described hard bit generation step is specific as follows：
    Received using the reference constellation figure generated in described reference constellation figure generation step as preferable under particular channel estimation The position of point, actual reception signal and desired received signal are subjected to range estimation, corresponding to closest reference constellation point Binary data be bit data to be decoded, judge reference constellation figure in reference constellation point apart from the nearest of data to be demodulated Distance, so as to obtain hard bit data to be decoded.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020187054A1 (en) * 2019-03-19 2020-09-24 华为技术有限公司 Method for data transmission, and communication apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102006250A (en) * 2010-11-23 2011-04-06 山东大学 Turbo enhancement method for MIMO-SCFDE wireless communication receiver
CN102739576A (en) * 2012-07-09 2012-10-17 武汉理工大学 Soft bit digital demodulating method and device of planisphere based on complex number space
US20140185703A1 (en) * 2003-11-05 2014-07-03 Sony Corporation Wireless communications system, wireless communications apparatus, wireless communications method and computer program for wireless communication
CN105049099A (en) * 2015-06-25 2015-11-11 北京科技大学 Multi-antenna self-adaptive scheduling method for LTE multi-antenna system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140185703A1 (en) * 2003-11-05 2014-07-03 Sony Corporation Wireless communications system, wireless communications apparatus, wireless communications method and computer program for wireless communication
CN102006250A (en) * 2010-11-23 2011-04-06 山东大学 Turbo enhancement method for MIMO-SCFDE wireless communication receiver
CN102739576A (en) * 2012-07-09 2012-10-17 武汉理工大学 Soft bit digital demodulating method and device of planisphere based on complex number space
CN105049099A (en) * 2015-06-25 2015-11-11 北京科技大学 Multi-antenna self-adaptive scheduling method for LTE multi-antenna system

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
刘建霞等: "单天线解空分复用算法的实现与仿真", 《太原理工大学学报》 *
刘彦文: "《采样控制系统的分析及HOO控制设计》", 31 October 2016 *
刘鸿飞等: "《自动控制理论》", 31 August 2016 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020187054A1 (en) * 2019-03-19 2020-09-24 华为技术有限公司 Method for data transmission, and communication apparatus
CN111726194A (en) * 2019-03-19 2020-09-29 华为技术有限公司 Method and communication device for transmitting data
CN111726194B (en) * 2019-03-19 2021-10-22 华为技术有限公司 Method and communication device for transmitting data
US11855765B2 (en) 2019-03-19 2023-12-26 Huawei Technologies Co., Ltd. Data transmission method and communication apparatus

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Application publication date: 20171229