CN103178890A - Method and system for receiving and transmitting signals and related device - Google Patents

Abstract

The invention discloses a method for receiving and transmitting signals. The method comprises the steps of distributing bit information produced by a signal source to a plurality of transmitting antennas, and encoding and modulating the bit information distributed to all transmitting antennas respectively; conducting spatial interleaving and Q-channel interleaving on all channels of encoded and modulated modulating symbols respectively; conducting pre-coding on all channels of symbols after the Q-channel interleaving, and then sending symbols through antennas respectively; receiving a plurality of channels of receiving symbols, and conducting pre-decoding on all channels of receiving symbols respectively; conducting Q-channel de-interleaving and spatial de-interleaving on all channels of symbols subjected to pre-decoding respectively; and demodulating and decoding all channels of symbols after the spatial de-interleaving. The invention also discloses a system for receiving and transmitting signals and related devices correspondingly. By the aid of the method, the system and related devices, the high transmission efficiency of the system can be achieved, the spectrum utilization efficiency can be improved, the transmission reliability can be improved through diversities, the wireless system anti-fading performance can be greatly improved, and the requirements for development of wireless transmission networks can be met.

Description

Signal transmit-receive method and system, signal sending, receiving method and relevant apparatus

Technical field

The present invention relates to Multiinputoutput (MIMO) communications field, relate in particular to a kind of signal transmit-receive method and system, signal sending, receiving method and relevant apparatus.

Background technology

Along with mobile Internet extensive propelling in the world, the capacity requirement of radio communication is increasing rapidly, on the other hand, the wireless frequency spectrum in the world is limited, operators often will pay the frequency spectrum resource that huge economic cost could obtain one section preciousness, this just requires communication equipment must constantly improve the utilance of wireless frequency spectrum, otherwise just can not satisfy the wireless traffic demand of rapid growth, Multiinputoutput (MIMO) technology is exactly to reach by the antenna amount that increases transmitting terminal and receiving terminal the effect that significantly improves the availability of frequency spectrum.

In addition, need to prove, in fading channel, it is particularly important that diversity seems, in optimally diversified situation, error probability can be index decreased along with the increase of average signal-to-noise ratio, still, and under some application scenarios of MIMO, although the Bit Interleave modulation has increased code modulated time diversity degree, yet, due to reducing of minimum euclidean distance, make again the transmission performance under spectral efficient (high code check) condition obviously worsen.How to improve transmission reliability when improving transmission performance, become the focus that the people in the industry relatively pays close attention to.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of signal transmit-receive method and system, signal sending, receiving method and relevant apparatus, can improve transmission reliability when improving transmission performance.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of signal transmit-receive method comprises:

Transmitting terminal is assigned to the bit information that information source produces on a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively, modulated;

The modulation symbol of transmitting terminal after to each road coding, modulation carries out respectively that the space interweaves, the Q road interweaves;

Each road symbol after transmitting terminal interweaves to the Q road carries out precoding, sends by antenna respectively afterwards;

Receiving terminal is received the multipath reception symbol, and described each road receiving symbol is carried out respectively pre decoding;

Receiving terminal each road symbol after to pre decoding carries out respectively Q road deinterleaving, Space Solutions interweaves;

Each road symbol after receiving terminal interweaves to Space Solutions carries out demodulation, decoding.

Described transmitting terminal carry out the space interweave for:

Adopt rotation hierarchical coding mode, suppose that the modulation symbol on t moment l root antenna is

Space interleaved symbol on t moment l ' root antenna is

So,

Described transmitting terminal carry out the Q road interweave for:

Symbol after the space interweaves is expressed as according to real part I and imaginary part Q

With n _TSymbol after on transmit antennas, the space interweaves

Note is (I _i, Q _i), keep the I road of every road signal constant, with n _TIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i+1)\%n_T\end{array}\right.,$ After Q road block is reset, the I road on every antenna and Q road signal are carried out S random interleaving in piece.

Described receiving terminal carries out Q road deinterleaving: with n _RThe I road of the signal on the root reception antenna after pre decoding and Q road signal are done and separated S random interleaving postscript is (I _i, Q _i), keep the I road of every road signal constant, with n _RIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i-1)\%n_T\end{array}\right..$

Described receiving terminal carry out Space Solutions interweave for: t constantly the Q road deinterleaving symbol on i root antenna be

Space Solutions interleaved symbol on the t moment the i ' root antenna is

A kind of signaling method comprises:

The bit information that information source is produced is assigned on a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively, modulated;

To the modulation symbol after each road coding, modulation carry out respectively that the space interweaves, the Q road interweaves;

Each road modulation symbol after the Q road is interweaved carries out precoding, sends by antenna respectively afterwards.

Described carry out the space interweave for:

Adopt rotation hierarchical coding mode, suppose that the modulation symbol on t moment l root antenna is

Space interleaved symbol on t moment l ' root antenna is

So,

Described carry out the Q road interweave for:

Symbol after the space interweaves is expressed as according to real part I and imaginary part Q

With n _TSymbol after on transmit antennas, the space interweaves Note is (I _i, Q _i), keep the I road of every road signal constant, with n _TIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i+1)\%n_T\end{array}\right.,$ After Q road block is reset, the I road on every antenna and Q road signal are carried out S random interleaving in piece.

A kind of signal acceptance method comprises:

Receive the multipath reception symbol, described each road receiving symbol is carried out respectively pre decoding;

To each road receiving symbol after pre decoding carry out respectively Q road deinterleaving, Space Solutions interweaves;

Each road receiving symbol after Space Solutions is interweaved carries out demodulation, decoding.

The described Q of carrying out road deinterleaving is: with n _RThe I road of the signal on the root reception antenna after pre decoding and Q road signal are done and separated S random interleaving postscript is (I _i, Q _i), keep the I road of every road signal constant, with n _RIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i-1)\%n_T\end{array}\right..$

Described carry out Space Solutions interweave for: t constantly the Q road deinterleaving symbol on i root antenna be

Space Solutions interleaved symbol on the t moment the i ' root antenna is

A kind of sender unit comprises: coding module, modulation module, space interleaving block, Q road interleaving block, precoding module, transmitting antenna; Wherein,

Described coding module is used for the bit information that information source produces is assigned to a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively;

Described modulation module is used for the information after coding is modulated;

Described space interleaving block is used for that the modulation symbol after modulation is carried out respectively the space and interweaves;

Described Q road interleaving block, the symbol after being used for the space is interweaved carry out the Q road and interweave;

Described precoding module, each road symbol after being used for the Q road is interweaved carries out precoding, sends by transmitting antenna respectively afterwards.

Described space interleaving block to the modulation after modulation symbol carry out respectively the space interweave for:

Adopt rotation hierarchical coding mode, suppose that the modulation symbol on t moment l root antenna is

Space interleaved symbol on t moment l ' root antenna is

So,

Symbol after described Q road interleaving block interweaves to the space carry out the Q road interweave for:

Symbol after the space interweaves is expressed as according to real part I and imaginary part Q With n _TSymbol after on transmit antennas, the space interweaves

Note is (I _i, Q _i), keep the I road of every road signal constant, with n _TIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i+1)\%n_T\end{array}\right.,$ After Q road block is reset, the I road on every antenna and Q road signal are carried out S random interleaving in piece.

A kind of signal receiving device comprises: reception antenna, pre decoding module, Q road de-interleaving block, Space Solutions interleaving block, demodulation module and decoding module; Wherein,

Described pre decoding module, each road receiving symbol that is used for reception antenna is received carries out respectively pre decoding;

Described Q road de-interleaving block is used for each road symbol after pre decoding is carried out respectively Q road deinterleaving;

Described Space Solutions interleaving block is used for that the symbol after Q road deinterleaving is carried out Space Solutions and interweaves;

Described demodulation module, each road symbol after being used for Space Solutions is interweaved carries out demodulation;

Described decoding module is used for the symbol after demodulation is carried out decoding.

De-interleaving block each road symbol after to pre decoding in described Q road carries out respectively Q road deinterleaving and is: with n _RThe I road of the signal on the root reception antenna after pre decoding and Q road signal are done and separated S random interleaving postscript is (I _i, Q _i), keep the I road of every road signal constant, with n _RIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i-1)\%n_T\end{array}\right..$

The symbol of described Space Solutions interleaving block after to Q road deinterleaving carry out Space Solutions interweave for: t constantly the Q road deinterleaving symbol on i root antenna be

Space Solutions interleaved symbol on the t moment the i ' root antenna is

$y_t^{i^{\′}}=y_t^i,i^{\′}=\left[(i-t)\mathrm{mod}{n}_T\right].$

A kind of signal receiving and transmitting system comprises above-mentioned sender unit, and above-mentioned signal receiving device.

Signal transmit-receive method of the present invention and system, signal sending, receiving method and relevant apparatus, transmitting terminal is assigned to the bit information that information source produces on a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively, modulated; The modulation symbol of transmitting terminal after to each road coding, modulation carries out respectively that the space interweaves, the Q road interweaves; Each road symbol after transmitting terminal interweaves to the Q road carries out precoding, sends by antenna respectively afterwards; Receiving terminal is received the multipath reception symbol, and described each road receiving symbol is carried out respectively pre decoding; Receiving terminal each road symbol after to pre decoding carries out respectively Q road deinterleaving, Space Solutions interweaves; Each road symbol after receiving terminal interweaves to Space Solutions carries out demodulation, decoding.The present invention combines MIMO and combined coding modulation, operational use time diversity, space diversity and modulation diversity characteristic, both can make system reach very high efficiency of transmission, improve the availability of frequency spectrum, can improve transmission reliability by diversity again, greatly increased the wireless system anti fading performance, the requirement of wireless transmission net development once under can satisfying.

Description of drawings

Fig. 1 is signal transmit-receive method schematic flow sheet of the present invention;

Fig. 2 is the operation principle schematic diagram of signal receiving and transmitting system of the present invention;

Fig. 3 is the demodulation performance comparison diagram of the present invention and prior art.

Embodiment

Basic thought of the present invention is: transmitting terminal is assigned to the bit information that information source produces on a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively, modulated; The modulation symbol of transmitting terminal after to each road coding, modulation carries out respectively that the space interweaves, the Q road interweaves; Each road symbol after transmitting terminal interweaves to the Q road carries out precoding, sends by antenna respectively afterwards; Receiving terminal is received the multipath reception symbol, and described each road receiving symbol is carried out respectively pre decoding; Receiving terminal each road symbol after to pre decoding carries out respectively Q road deinterleaving, Space Solutions interweaves; Each road symbol after receiving terminal interweaves to Space Solutions carries out demodulation, decoding.

Problem for prior art exists the present invention proposes a kind of signal transmit-receive method, and Fig. 1 is signal transmit-receive method schematic flow sheet of the present invention, and as shown in Figure 1, the method comprises:

Step 101: transmitting terminal is assigned to the bit information that information source produces on a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively, modulated.

Here, at first produce K0 bit information S={s by information source ₁, s ₂... s _K0, be assigned to n _TOn the root transmitting antenna, the information bit number k=K0/n on every antenna _T, the bit of the k on every antenna is encoded, is modulated.

Data length m=k/r after coding, wherein, r presentation code speed.

Symbolic number after modulation, coding

n _TTotal number of symbols on the root antenna $\mathrm{TotalSymbol}=\frac{K0}{M\×r},$ Wherein, M is order of modulation.

Step 102: the modulation symbol of transmitting terminal after to each road coding, modulation carries out respectively that the space interweaves, the Q road interweaves.

Here, described space interweaves and can adopt rotation hierarchical coding mode, also can adopt according to traditional different antennae port the method for precoding of different code books, and rotation hierarchical coding mode is namely at each n constantly _TReset according to certain rule the position of road output information, and described rule is specifically as follows: suppose that the modulation symbol on t moment l root antenna is

Space interleaved symbol on t moment l ' root antenna is

So:

Symbol after the space interweaves can be expressed as according to real part I and imaginary part Q $\{(I_0,Q_0),(I_1,Q_1),...(I_{n_T},Q_{n_T})\}.$

Here, described Q road interweave can for: with n _TSymbol after on transmit antennas, the space interweaves

Regard n as _TIndividual fritter, note is done: (I _i, Q _i), keep the I road of every road signal constant, with n _TIndividual Q road block carries out locational rearrangement, and establishing and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i+1)\%n_T\end{array}\right.,$ Need to prove, after Q road block is reset, the I road on every antenna and Q road signal are also needed to carry out S random interleaving in piece.

Step 103: each road modulation symbol after transmitting terminal interweaves to the Q road carries out precoding, sends by antenna respectively afterwards.

According to singular value decomposition (SVD) theory, any one n _R* n _TMatrix H can be write as H=UDV ^H, wherein, D is n _R* n _TNon-negative diagonal matrix, U and V are respectively n _R* n _RAnd n _T* n _TUnitary matrice.So the multipath channel matrix H is decomposed by SVD, obtain respectively U, D, three matrixes of V.

With n _R=n _T=2 examples, the multipath channel matrix H can be decomposed into following form:

$H=\left[\begin{array}{cc}{h}_{11}& h_{12}\\ h_{21}& h_{22}\end{array}\right]=U\left[\begin{array}{cc}{\mathrm{\λ}}_1& \\ & {\mathrm{\λ}}_2\end{array}\right]V^H$

N after if the Q road interweaves _TModulation symbol on the root antenna is Suppose precoding n later on _TSymbol on the root antenna is

T=1,2 ..., numSymbol, so, x=Vx ' after precoding.

Step 104: receiving terminal is received the multipath reception symbol, and described each road receiving symbol is carried out respectively pre decoding.

If receiving terminal n _RReception signal on the root antenna is

Transmitting terminal signal x obtains r=Hx+n through receiving terminal after channel, and wherein n represents Gaussian noise.

Suppose that the signal after pre decoding is

The U matrix that SVD is decomposited is done product with the signal r that receives after getting conjugation, obtains y=U ^HR in conjunction with the formula in r=Hx+n and step 103, obtains the later signal y=Dx ' of pre decoding+U ^HN is because n is a zero-mean Gaussian random variable and U ^HBe also a unitary matrice, make n '=U ^HN, n ' is also a zero-mean Gaussian random variable.

Need to prove, receiving end signal can be reduced to: y=Dx '+n '.If antenna number equates, signal y on every antenna so _i=λ _ix′ _i+ n ' _i

Step 105: receiving terminal each road receiving symbol after to pre decoding carries out respectively Q road deinterleaving, Space Solutions interweaves.

Here, the deinterleaving of Q road is specifically as follows: with n _RThe I road of the signal on the root reception antenna after pre decoding and Q road signal are done and separated S random interleaving postscript is (I _i, Q _i), keep the I road of every road signal constant, with n _RIndividual Q road block carries out locational rearrangement.If resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i-1)\%n_T\end{array}\right..$

Described Space Solutions interweaves and is specifically as follows: it is the inverse transformation that in step 102, the space interweaves that Space Solutions interweaves, and supposes that the Q road deinterleaving symbol on t moment i root antenna is

Space Solutions interleaved symbol on the t moment the i ' root antenna is

So: $y_t^{i^{\′}}=y_t^i,i^{\′}=\left[(i-t)\mathrm{mod}{n}_T\right].$

Step 106: each road receiving symbol after receiving terminal interweaves to Space Solutions carries out demodulation, decoding.

Need to prove, the result after decoding and source signal contrast, and can calculate the value of the error rate (BER) and Block Error Rate.

The present invention has also correspondingly proposed a kind of signaling method, comprising:

The bit information that information source is produced is assigned on a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively, modulated;

To the modulation symbol after each road coding, modulation carry out respectively that the space interweaves, the Q road interweaves;

Each road modulation symbol after the Q road is interweaved carries out precoding, sends by antenna respectively afterwards.

Described carry out the space interweave for:

Adopt rotation hierarchical coding mode, suppose that the modulation symbol on t moment l root antenna is Space interleaved symbol on t moment l ' root antenna is

So,

Described carry out the Q road interweave for:

Symbol after the space interweaves is expressed as according to real part I and imaginary part Q With n _TSymbol after on transmit antennas, the space interweaves

Note is (I _i, Q _i), keep the I road of every road signal constant, with n _TIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i+1)\%n_T\end{array}\right.,$ After Q road block is reset, the I road on every antenna and Q road signal are carried out S random interleaving in piece.

The present invention has also correspondingly proposed a kind of signal acceptance method, comprising:

Receive the multipath reception symbol, described each road receiving symbol is carried out respectively pre decoding;

To each road receiving symbol after pre decoding carry out respectively Q road deinterleaving, Space Solutions interweaves;

Each road receiving symbol after Space Solutions is interweaved carries out demodulation, decoding.

The described Q of carrying out road deinterleaving is: with n _RThe I road of the signal on the root reception antenna after pre decoding and Q road signal are done and separated S random interleaving postscript is (I _i, Q _i), keep the I road of every road signal constant, with n _RIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i-1)\%n_T\end{array}\right..$

Described carry out Space Solutions interweave for: t constantly the Q road deinterleaving symbol on i root antenna be Space Solutions interleaved symbol on the t moment the i ' root antenna is

The present invention has also correspondingly proposed a kind of sender unit, and this sender unit comprises: coding module, modulation module, space interleaving block, Q road interleaving block, precoding module, transmitting antenna; Wherein,

Described coding module is used for the bit information that information source produces is assigned to a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively;

Described modulation module is used for the information after coding is modulated;

Described space interleaving block is used for that the modulation symbol after modulation is carried out respectively the space and interweaves;

Described Q road interleaving block, the symbol after being used for the space is interweaved carry out the Q road and interweave;

Described precoding module, each road symbol after being used for the Q road is interweaved carries out precoding, sends by transmitting antenna respectively afterwards.

Described space interleaving block to the modulation after modulation symbol carry out respectively the space interweave for:

Adopt rotation hierarchical coding mode, suppose that the modulation symbol on t moment l root antenna is

Space interleaved symbol on t moment l ' root antenna is

So,

Symbol after described Q road interleaving block interweaves to the space carry out the Q road interweave for:

Symbol after the space interweaves is expressed as according to real part I and imaginary part Q

With n _TSymbol after on transmit antennas, the space interweaves

Note is (I _i, Q _i), keep the I road of every road signal constant, with n _TIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i+1)\%n_T\end{array}\right.,$ After Q road block is reset, the I road on every antenna and Q road signal are carried out S random interleaving in piece.

The present invention has also correspondingly proposed a kind of signal receiving device, and this signal receiving device comprises: reception antenna, pre decoding module, Q road de-interleaving block, Space Solutions interleaving block, demodulation module and decoding module; Wherein,

Described pre decoding module, each road receiving symbol that is used for reception antenna is received carries out respectively pre decoding;

Described Q road de-interleaving block is used for each road symbol after pre decoding is carried out respectively Q road deinterleaving;

Described Space Solutions interleaving block is used for that the symbol after Q road deinterleaving is carried out Space Solutions and interweaves;

Described demodulation module, each road symbol after being used for Space Solutions is interweaved carries out demodulation;

Described decoding module is used for the symbol after demodulation is carried out decoding.

De-interleaving block each road symbol after to pre decoding in described Q road carries out respectively Q road deinterleaving and is: with n _RThe I road of the signal on the root reception antenna after pre decoding and Q road signal are done and separated S random interleaving postscript is (I _i, Q _i), keep the I road of every road signal constant, with n _RIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i-1)\%n_T\end{array}\right..$

The symbol of described Space Solutions interleaving block after to Q road deinterleaving carry out Space Solutions interweave for: t constantly the Q road deinterleaving symbol on i root antenna be

Space Solutions interleaved symbol on the t moment the i ' root antenna is

$y_t^{i^{\′}}=y_t^i,i^{\′}=\left[(i-t)\mathrm{mod}{n}_T\right].$

The present invention has also correspondingly proposed a kind of signal receiving and transmitting system, and this system comprises above-mentioned sender unit and above-mentioned signal receiving device, and the operation principle of this system as shown in Figure 2.

Fig. 3 is the demodulation performance comparison diagram of the present invention and prior art, in Fig. 3, BICM represents to adopt existing method, Rotation2 represents to adopt method of the present invention, and adopt rotation hierarchical coding mode to carry out doing in the interleaving process of space once rotation, Rotation4D represents to adopt method of the present invention, and adopt rotation hierarchical coding mode to carry out doing in the interleaving process of space twice rotation, as can be seen from Figure 3, the demodulation performance that adopts method of the present invention to obtain is better than prior art.

The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.

Claims (18)

1. a signal transmit-receive method, is characterized in that, the method comprises:

Transmitting terminal is assigned to the bit information that information source produces on a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively, modulated;

The modulation symbol of transmitting terminal after to each road coding, modulation carries out respectively that the space interweaves, the Q road interweaves;

Each road symbol after transmitting terminal interweaves to the Q road carries out precoding, sends by antenna respectively afterwards;

Receiving terminal is received the multipath reception symbol, and described each road receiving symbol is carried out respectively pre decoding;

Receiving terminal each road symbol after to pre decoding carries out respectively Q road deinterleaving, Space Solutions interweaves;

Each road symbol after receiving terminal interweaves to Space Solutions carries out demodulation, decoding.

2. signal transmit-receive method according to claim 1, is characterized in that, described transmitting terminal carry out the space interweave for:

Adopt rotation hierarchical coding mode, suppose that the modulation symbol on t moment l root antenna is

Space interleaved symbol on t moment l ' root antenna is

So,

3. signal transmit-receive method according to claim 1, is characterized in that, described transmitting terminal carry out the Q road interweave for:

Symbol after the space interweaves is expressed as according to real part I and imaginary part Q

With n _TSymbol after on transmit antennas, the space interweaves

Note is (I _i, Q _i), keep the I road of every road signal constant, with n _TIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i+1)\%n_T\end{array}\right.,$ After Q road block is reset, the I road on every antenna and Q road signal are carried out S random interleaving in piece.

4. signal transmit-receive method according to claim 1, is characterized in that, described receiving terminal carries out Q road deinterleaving and is: with n _RThe I road of the signal on the root reception antenna after pre decoding and Q road signal are done and separated S random interleaving postscript is (I _i, Q _i), keep the I road of every road signal constant, with n _RIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i-1)\%n_T\end{array}\right..$

5. signal transmit-receive method according to claim 1, is characterized in that, described receiving terminal carry out Space Solutions interweave for: t constantly the Q road deinterleaving symbol on i root antenna be

Space Solutions interleaved symbol on the t moment the i ' root antenna is

$y_t^{i^{\′}}=y_t^i,i^{\′}=\left[(i-t)\mathrm{mod}{n}_T\right].$

6. a signaling method, is characterized in that, the method comprises:

The bit information that information source is produced is assigned on a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively, modulated;

To the modulation symbol after each road coding, modulation carry out respectively that the space interweaves, the Q road interweaves;

Each road modulation symbol after the Q road is interweaved carries out precoding, sends by antenna respectively afterwards.

7. signaling method according to claim 6, is characterized in that, described carry out the space interweave for:

Adopt rotation hierarchical coding mode, suppose that the modulation symbol on t moment l root antenna is

Space interleaved symbol on t moment l ' root antenna is

So,

8. signaling method according to claim 6, is characterized in that, described carry out the Q road interweave for:

Symbol after the space interweaves is expressed as according to real part I and imaginary part Q

With n _TSymbol after on transmit antennas, the space interweaves Note is (I _i, Q _i), keep the I road of every road signal constant, with n _TIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i+1)\%n_T\end{array}\right.,$ After Q road block is reset, the I road on every antenna and Q road signal are carried out S random interleaving in piece.

9. a signal acceptance method, is characterized in that, the method comprises:

Receive the multipath reception symbol, described each road receiving symbol is carried out respectively pre decoding;

To each road receiving symbol after pre decoding carry out respectively Q road deinterleaving, Space Solutions interweaves;

Each road receiving symbol after Space Solutions is interweaved carries out demodulation, decoding.

10. signal acceptance method according to claim 9, is characterized in that, the described Q of carrying out road deinterleaving is: with n _RThe I road of the signal on the root reception antenna after pre decoding and Q road signal are done and separated S random interleaving postscript is (I _i, Q _i), keep the I road of every road signal constant, with n _RIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i-1)\%n_T\end{array}\right..$

11. signal acceptance method according to claim 9 is characterized in that, described carry out Space Solutions interweave for: t constantly the Q road deinterleaving symbol on i root antenna be

Space Solutions interleaved symbol on the t moment the i ' root antenna is $y_t^{i^{\′}}=y_t^i,i^{\′}=\left[(i-t)\mathrm{mod}{n}_T\right].$

12. a sender unit is characterized in that, this sender unit comprises: coding module, modulation module, space interleaving block, Q road interleaving block, precoding module, transmitting antenna; Wherein,

Described coding module is used for the bit information that information source produces is assigned to a plurality of transmitting antennas, and the bit information that is assigned on each antenna is encoded respectively;

Described modulation module is used for the information after coding is modulated;

Described space interleaving block is used for that the modulation symbol after modulation is carried out respectively the space and interweaves;

Described Q road interleaving block, the symbol after being used for the space is interweaved carry out the Q road and interweave;

Described precoding module, each road symbol after being used for the Q road is interweaved carries out precoding, sends by transmitting antenna respectively afterwards.

13. sender unit according to claim 12 is characterized in that, described space interleaving block to the modulation after modulation symbol carry out respectively the space interweave for:

Adopt rotation hierarchical coding mode, suppose that the modulation symbol on t moment l root antenna is

Space interleaved symbol on t moment l ' root antenna is

So,

14. sender unit according to claim 12 is characterized in that, the symbol after described Q road interleaving block interweaves to the space carry out the Q road interweave for:

Symbol after the space interweaves is expressed as according to real part I and imaginary part Q

With n _TSymbol after on transmit antennas, the space interweaves

Note is (I _i, Q _i), keep the I road of every road signal constant, with n _TIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i+1)\%n_T\end{array}\right.,$ After Q road block is reset, the I road on every antenna and Q road signal are carried out S random interleaving in piece.

15. a signal receiving device is characterized in that, this signal receiving device comprises: reception antenna, pre decoding module, Q road de-interleaving block, Space Solutions interleaving block, demodulation module and decoding module; Wherein,

Described pre decoding module, each road receiving symbol that is used for reception antenna is received carries out respectively pre decoding;

Described Q road de-interleaving block is used for each road symbol after pre decoding is carried out respectively Q road deinterleaving;

Described Space Solutions interleaving block is used for that the symbol after Q road deinterleaving is carried out Space Solutions and interweaves;

Described demodulation module, each road symbol after being used for Space Solutions is interweaved carries out demodulation;

Described decoding module is used for the symbol after demodulation is carried out decoding.

16. signal receiving device according to claim 15 is characterized in that, de-interleaving block each road symbol after to pre decoding in described Q road carries out respectively Q road deinterleaving and is: with n _RThe I road of the signal on the root reception antenna after pre decoding and Q road signal are done and separated S random interleaving postscript is (I _i, Q _i), keep the I road of every road signal constant, with n _RIndividual Q road block carries out locational rearrangement, and resetting later signal phasor is (I _i′, Q _i′), $\left\{\begin{array}{cc}{I}_{i^{\′}}=I_i& i^{\′}=i\\ Q_{i^{\′}}=Q_i& i^{\′}=(i-1)\%n_T\end{array}\right..$

17. signal receiving device according to claim 15 is characterized in that, the symbol of described Space Solutions interleaving block after to Q road deinterleaving carry out Space Solutions interweave for: t constantly the Q road deinterleaving symbol on i root antenna be

Space Solutions interleaved symbol on the t moment the i ' root antenna is

$y_t^{i^{\′}}=y_t^i,i^{\′}=\left[(i-t)\mathrm{mod}{n}_T\right].$

18. a signal receiving and transmitting system is characterized in that, this system comprises the described sender unit of claim 12 to 14 any one, and the described signal receiving device of claim 15 to 17 any one.

Images