CN101141166B - Data transmission device - Google Patents

Abstract

The present invention provides a plurality of data transmitting devices. Wherein, a first data transmitting device comprises a plurality of transmitting modules to transmit data streams to a data receiving device by means of fake characteristic beam forming technology under TDD mode, a data processing module to process data streams to be transmitted and distribute processed data streams to one or a plurality of layers. The layer redistributes these data streams to these transmitting modules for transmission. Bit quantity of layer information distributed through the fake characteristic beam forming technology exceeds bit quantity distributed for other layer information. The data transmitting device is applicable to monocode modes. The data transmitting device of the present invention can make full use of statistical rules relative to receiving SNR at receiving end for the transmitting module, reject feedback of the receiving end and save system resources.

Description

Data sending device

Technical field

The present invention relates to the communications field, relate in particular to data sending device.

Background technology

According to information theory, at the transmitting terminal and the receiving terminal of communication system, perhaps these two ends use multi-antenna array can greatly improve the transmission bit rate of system simultaneously.

MIMO (Multi-Input Multi-Output, multiple-input and multiple-output) application of technology in wireless communication system more and more comes into one's own, no matter be that MIMO has its irreplaceable superiority from angle that increases power system capacity or the angle of improving systematic function.

Fig. 1 shows the wireless communication system with Space-Time framework that uses multi-antenna array at transmitting terminal and receiving terminal simultaneously.This system is also referred to as MIMO (multiple-input and multiple-output) system, and it is operated in the Rayleigh scattering environment, and each element of channel matrix can be similar to regards that statistics independently as.In system shown in Figure 1, a data sequence can be divided into M incoherent code element subsequence, and each subsequence is by an emission in M the transmitting antenna.M subsequence can be received by N reception antenna at receiving terminal after the influence of the channel that is H through a channel matrix.S emission signal s ₁..., s _MCan pass through M different antenna element a-1 respectively ..., a-M emission, corresponding received signal x ₁..., x _NRespectively from N different antenna element b-1 ..., b-N receives.In this communication system, it is 2 that transmission antenna unit is counted M minimum, and reception antenna unit number N minimum be M.Channel matrix H is the matrix of a N * M, and i reception antenna of element representation of the capable j of i row and j transmitting antenna are by the coupling of transmission channel in the matrix.Received signal x ₁..., x _NProcessed to produce transmitting of recovering in digital signal processor

Also shown summation composition c-1 among this figure, c-2 ..., c-N, the unavoidable noise signal w that their representatives comprise ₁, w ₂..., w _N, these noise signals join reception antenna unit b-1 respectively, b-2 ..., in the signal that b-N receives.

In mimo system shown in Figure 1, can use single codeword (SCW, SingleCode Word) pattern.Above-mentioned single codeword pattern is submitted in the motion of LTE in IEEE 802.20 standards and certain company, and introduction is all arranged.Under the single codeword pattern, transmitting terminal uses M virtual-antenna port to transmit to receiving terminal, described M more than or equal to 2 smaller or equal to 4.On a plurality of virtual transmitting antennas, the data flow behind each moment transmission of one line coding after a plurality of symbol strings in this data flow and the conversion, is assigned on each virtual transmitting antenna again and is launched.At each TTI (Transition Time Interval, Transmission Time Interval), receiving terminal only feeds back a CQI (Channel Quality Indicator, the channel quality indication) information and an ACK/NACK information, wherein CQI information is told The data which type of MCS (the The modulationand channel coding scheme of transmitting terminal behind corresponding TTI transmission of one line coding, modulation and channel coding schemes), and ACK/NACK information tells whether the data of transmitting terminal behind corresponding TTI transmission of one line coding have been received proper really decoding.

At above-mentioned send mode, receiver can be simple linear receiver, during such as known MMSE (least mean-square error) equalizer (equalizer) empty or emptyly realize frequently, also can be the receiver that the complicated data to the space multi-way transmission are carried out non-linear joint demodulation, such as the non-linear receiver that adopts interference cancellation techniques.

In IEEE 802.20 standards in the SCW pattern of defined, dimension (Rank) K that the receiving terminal feedback space is multiplexing, transmitting terminal is according to this dimension K, and each in a TTI must use K in all available M transmitting antennas to carry out the space multi-way transmission constantly; Transmitting terminal each moment in a TTI is used alternatingly all M transmitting antenna, promptly uses each transmitting antenna in turn, rather than only uses M middle fixed K individual.Such as transmitting terminal 4 transmitting antennas 1,2,3,4 are arranged, if when signal is launched, determine to use wherein 2 transmitting antennas, then each all uses 2 transmitting antennas constantly, but being to use which 2 transmitting antenna, is time dependent, and several moment are used transmitting antenna 1,2, several moment are used transmitting antenna 3,4, several moment are used transmitting antenna 2,3..., and the employed transmitting antenna of alternate (has C here up to all possible combination of traversal so successively ₄ ² Antenna 1,2 is promptly used in=6 kinds of combinations, antenna 3,4, antenna 1,3, antenna 2,4, antenna 1,4, antenna 2,3.

Here introduce the notion of above-mentioned TTI and symbol period.In order to resist channel fading, and the error of transmission that brings of the interference of channel and noise, transmitting terminal is divided into a plurality of packets (Block) to the data of needs transmission, information bit in the same packet is carried out chnnel coding and interweaves, be modulated into a plurality of symbols again by Channel Transmission, and the length of transmitting so needed time of packet has determined the length of a TTI.Receiving terminal receives all symbols that comprise in the same packet earlier, carries out deinterleaving and decoding again.In the present invention, a TTI just is meant the time interval of transmitting such packet.

And each symbol in the packet that is transmitted in TTI can be distributed in different interval on the time domain, perhaps is distributed in different interval on the frequency domain, perhaps is distributed in the different intervals on the two dimensional surface of time domain and frequency domain.A symbol period as herein described just is meant an interval that symbol takies by Channel Transmission, the interval that perhaps takies, the perhaps interval that takies on the two dimensional surface of time domain and frequency domain on frequency domain on time domain.For example, in the described MIMO ofdm communication scheme of the document of IEEE 802.20 standard 2006-01-06 " MBFDD and MBTDD:Proposed Draft Air Interface Specification ", packet uses 8 OFDM symbols on the time domain, each OFDM symbol takies 16 subcarriers on the frequency domain, symbol period so, just be meant an interval on the two dimensional surface of time domain and frequency domain, 1 subcarrier on 1 OFDM symbol on the time domain just, and this packet has 8 * 16=128 symbol period.

In the MIMO technology, in order more effectively to transmit data, need control the data rate of transmitting terminal, as previously mentioned, in the prior art, CQI information of receiving terminal feedback is told The data which type of MCS (the The modulation and channel coding scheme of transmitting terminal behind corresponding TTI transmission of one line coding, modulation and channel coding schemes), control the data rate of transmitting terminal thus.

Method in common is all modulation and coded system (Modulation ﹠amp that transmitting antenna is supported at present; Coding Scheme is called for short MCS) make a table, an example commonly used is as shown in table 1, is kept at transmitting terminal and receiving terminal simultaneously.Receiving terminal is calculated signal and interference-to-noise ratio (Signal to Interference and NoiseRatio according to channel situation, be called for short SINR), judge by the SINR that calculates which type of MCS is current channel situation can support, the index that feeds back this MCS again gets final product.

The MCS index	Spectrum efficiency (Bps/Hz)	Modulation	Encoding rate	Bit is represented
					6	3	16QAM	3/4	100
5	2	16QAM	1/2	110
					4	1.5	QPSK	3/4	010

3	1	QPSK	1/2	011
					2	0.5	QPSK	1/4	001
Not 1 (not launching)	0	-	-	000

Table 1:MCS mapping table

For single codeword, data flow to be sent is at first passed through operations such as chnnel coding, channel interleaving, rate-matched and planisphere mapping, launch (K is smaller or equal to M, and M is the number of transmitting antenna) through different antennas respectively for the data flow of K road phase same rate along separate routes then.Under the every incoherent situation of and channel matrix H higher in signal to noise ratio, K=M usually is so in the introduction below, provide embodiment at the situation of common K=M.Receiving terminal calculates the average received SINR of all transmitting antennas (can be virtual transmitting antenna), looks into the index of the MCS that MCS concordance list feedback transmitting terminal should adopt.At transmitting terminal, as shown in Figure 2, data flow to be launched adopts unified channel encoder, RM (Rate Matching, rate-matched) mode and modulation system, then all data is distributed to each antenna, launches after handling accordingly.According to the difference of the multi-access mode that system adopted, channel code or channel resources such as frequency or time that the data occupancy of this M transmitting antenna is identical.

As shown in Figure 2, channel coding module 202 is the Turbo code of 1/5 code check.Channel interleaving module 204 comprises two submodules, is respectively bit separation and bit permutation.Rate-matched module 206 is punched the sequence length of bringing as required or is repeated.Splitter 208 is to transmit assigning on each antenna according to certain rule through the sequence after the rate-matched.In existing SCW, the information bit mean allocation in the sequence is to each antenna.Modulation module 210 comprises two submodules, be respectively planisphere mapping block 210a and channelizing processing module 210b, wherein, the planisphere mapping comprises modulation systems such as BPSK, QPSK, 8PSK, 16QAM, 64QAM, channelizing is handled and is comprised OFDM or spread spectrum etc., and a plurality of transmitter modules, can be antenna.

The feedback quantity of this mode of SCW is less, and because the channel encoder that adopts has only one, therefore CRC check is at the data on all transmitting antennas, so H-ARQ mechanism is comparatively simple, in case showing, CRC check makes mistakes, all data when pre-treatment retransmit so, only need an ack/nack signal to get final product.

In current techniques, information sequence in the SCW system (being data flow to be sent) through the coding, interweave and rate-matched after carry out shunt, each antenna is uploaded the information bit of equal length when shunt, being about to information sequence divides equally on each antenna, add to send after entering the channelizing processing module after the verification sequence, as shown in Figure 3.In Fig. 3, the bit of representing with the oblique line lattice is an information bit, is check bit with the bit of grid representation.

Since the feedback the time standby be the average received SINR of all transmitting antennas, if SINR does not wait even differs greatly on M the transmitting antenna, then have more error code on the less antenna of SINR, particularly the information bit error code on the less antenna of SINR can have a strong impact on the performance of whole system, and the throughput of system also will inevitably have loss.

Have a kind of method, receiving terminal feedback notice transmitting terminal is to allow transmitting terminal know which or which received signal to noise ratio in its transmitting antenna is better.Transmitting terminal is assigned to this or some received signal to noise ratio transmitting antenna preferably to information bit as much as possible then, to improve the performance that receives.The shortcoming of this method is to need feedback, and the cost of use is higher.

Each transmitting antenna is at the received signal to noise ratio of receiving terminal, usually have nothing in common with each other, adopt identical modulation system, can not make full use of the characteristics that received signal to noise ratio is had nothing in common with each other, adopt the modulation system of high-order at the higher transmitting antenna of received signal to noise ratio, and adopt the modulation system of low order at the lower transmitting antenna of received signal to noise ratio.

The channel matrix of MIMO changes in time and changes, so constantly at each, each transmitting antenna all changes in the size of the received signal to noise ratio of receiving terminal and relative size each other, so if according to the size of each transmitting antenna at the received signal to noise ratio of receiving terminal, adopt suitable modulation system at each transmitting antenna respectively, usually need feedback, by receiving terminal notice transmitting terminal, which type of modulation system each antenna of transmitting terminal is fit to adopt.The shortcoming of this method is to need feedback, and the cost of use is higher.

In addition, except above-mentioned single codeword pattern, also have MCW (many patterns of code words), and method of the present invention also can be generalized to many patterns of code words.Below many patterns of code words are introduced.

In mimo system shown in Figure 1, can use many patterns of code words.Under many patterns of code words, transmitting terminal uses M virtual-antenna port to transmit to receiving terminal, described M more than or equal to 2 smaller or equal to 4.On a plurality of virtual transmitting antennas, each transmits the data flow behind the coding of K (K is smaller or equal to M) road constantly, and each road of K circuit-switched data stream is assigned on each virtual transmitting antenna again and launched.At each TTI, receiving terminal K CQI (channel quality indication) information of feedback and K ACK/NACK information, wherein CQI information is told which type of MCS of The data (modulation and channel coding schemes) after encoding in transmitting terminal each road in the K road that a corresponding TTI transmits, and ACK/NACK information tells whether the data behind transmitting terminal each road coding in the K road of corresponding TTI transmission have been received proper true decoding.

At above-mentioned send mode, receiver can be simple linear receiver, it also can be the non-linear receiver of the employing interference cancellation techniques of complexity, and for many patterns of code words, use interference cancellation techniques can obtain very big gain, so many patterns of code words are used the non-linear receiver of interference eliminated usually.

In the MCW pattern, the individual CQI of receiving terminal feedback K (K is smaller or equal to M) indicates the MCS of the data flow after encoding in the K road respectively.The MCW pattern also has two kinds of situations:

1, each road in the data flow behind the coding of situation a:K road is fixed on some virtual-antennas (i.e. layer) or physical antenna transmission.

2, each road in the situation b:K circuit-switched data stream, all by all virtual-antennas (i.e. layer) or physical antenna transmission, promptly this antenna is used at some symbol periods in this road, and next symbol period uses another antenna, by this method, each road all travels through all antennas.

For many code words, data flow to be sent is at first passed through along separate routes, is divided into the K road, respectively each road is carried out operations such as chnnel coding, channel interleaving, rate-matched and planisphere mapping then, launch (K is smaller or equal to M, and M is the number of transmitting antenna) through antenna then.Under the every incoherent situation of and channel matrix H higher in signal to noise ratio, K=M usually is so in the introduction below, provide embodiment at the situation of common K=M.As previously mentioned, can all be fixed on some antenna emissions in each road, perhaps by replacing, each road all in all symbol periods of a TTI, travels through all transmitting antennas promptly by all transmitting antenna transmission.

Receiving terminal calculates the reception SINR on each road, looks into the index of the MCS that each road of MCS concordance list feedback transmitting terminal should adopt, and when receiving terminal adopted interference cancellation receiver, the calculating that receives SINR need be considered the gain of interference eliminated.

Introduce the notion of layer recited above here.In some MIMO technology, under the tdd mode that will introduce in detail below for example in pseudo-characteristic beam shaping (pseudo-eigen-beamforming) technology and the MIMO precoding technique, after a matrix is taken advantage of on the left side of the column vector formed of transmitting, deliver to again on each physical antenna and launch.Accordingly, each transmits, all with matrix in row multiply each other, each result who obtains delivers to each physical antenna respectively, we call this to this and transmit and launch by one deck, described one deck is equivalent to a wave beam or a virtual-antenna.

Summary of the invention

The invention provides several data sending devices at above problem, can make full use of the statistical law of transmitter module, and not need receiving terminal to feed back, saved system resource in receiving terminal received signal to noise ratio relative size.

First kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, and data flow is sent to data sink; And data processing module, be used for handling and processed data stream being assigned to one or more layer to sent data flow, a plurality of transmitter module emissions are given in described layer reallocation, wherein, distribute to the number of information bit of the layer that uses the pseudo-characteristic beam-forming technology greater than the number of the information bit of distributing to other layers.Wherein, first kind of data sending device is applied to the single codeword pattern.

Second kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, and data flow is sent to data sink; And data processing module, be used for to sent data flow handle and with distribution of flows to one or more layer, a plurality of transmitter module emissions are given in described layer reallocation, wherein, use modulation system that the layer of pseudo-characteristic beam-forming technology uses than the modulation system higher order of other layers use or multistage.Wherein, the data processing module power that give to use the layer of pseudo-characteristic beam-forming technology to distribute is higher than the power to other layers distribution.Second kind of data sending device is applied to the single codeword pattern.

The third data sending device of the present invention comprises: a plurality of transmitter modules are used under the precoding pattern data flow being sent to data sink; And data processing module, be used for handling and processed data stream being assigned to one or more layer to sent data flow, a plurality of transmitter module emissions are given in described layer reallocation, wherein, pre-coding matrix has the M row, every row are corresponding to one deck, and the number of information bit of distributing to the one deck at least under the precoding pattern is greater than the number of the information bit of distributing to other layer except that this layer.Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer is that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer is sequence number than all big layers of sequence number of one deck at least.The method of salary distribution of information bit is: successively information bit as much as possible is distributed to one deck and other layer except that this layer at least.The third data sending device is applied to the single codeword pattern.

The 4th kind of data sending device of the present invention comprises: a plurality of transmitter modules are used under the precoding pattern data flow being sent to data sink; And data processing module, be used for to sent data flow handle and with distribution of flows to one or more layer, a plurality of transmitter module emissions are given in described layer reallocation, the exponent number of the modulation system that the one deck at least under wherein, the precoding pattern uses is higher than the exponent number of the modulation system of other layer except that this layer.Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer is that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer is sequence number than all big layers of sequence number of one deck at least.The power that data processing module distributes for one deck at least is higher than the power to other layer distribution except that this layer.The 4th kind of data sending device is applied to the single codeword pattern.

The 5th kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, and one or more data flow is sent to data sink; And data processing module, be used for to sent one or more data flow handle respectively and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in each layer reallocation, wherein, each circuit-switched data stream repeating query ground uses each layer, and, all as much as possible information bit is distributed to the layer that uses the pseudo-characteristic beam-forming technology for each circuit-switched data stream.

The 6th kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, and one or more data flow is sent to data sink; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in described layer reallocation, wherein, one or more data flow repeating query ground uses each layer, and the modulation system that adopts at the layer that uses the pseudo-characteristic beam-forming technology of each circuit-switched data stream than circuit-switched data stream at the modulation system higher order of other layers use or multistage.For each circuit-switched data stream, the power that data processing module distributes for the layer of use pseudo-characteristic beam-forming technology is higher than the power to other layers distribution.

The 7th kind of data sending device of the present invention comprises: a plurality of transmitter modules are used under the precoding pattern one or more data flow being sent to data sink; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in described layer reallocation, wherein, one or more data flow repeating query ground uses each layer, and for each circuit-switched data stream, and the number of information bit of distributing to the one deck at least under the precoding pattern is greater than the number of distributing to the information bit of other one deck at least except that this layer.

Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer is that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer is sequence number than all big layers of sequence number of one deck at least.The method of salary distribution of information bit is: successively information bit as much as possible is distributed to one deck and other layer except that this layer at least.

The 8th kind of data sending device of the present invention comprises: a plurality of transmitter modules are used under the precoding pattern one or more data flow being sent to data sink; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in described layer reallocation, wherein, one or more data flow repeating query ground uses each layer, and for each circuit-switched data stream, the exponent number of the modulation system that the one deck at least under the precoding pattern uses is higher than the exponent number of the modulation system of other layer use except that this layer.

Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer is that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer is sequence number than all big layers of sequence number of one deck at least.The method of salary distribution of information bit is: for each circuit-switched data stream, the assigned power of the one deck at least under the precoding pattern is more than the assigned power of other layer except that this layer.

The 9th kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, and one or more data flow is sent to data sink; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in described layer reallocation, wherein, one or more data flow is fixing respectively uses one deck emission, and the message transmission rate of layer used modulation of use pseudo-characteristic beam-forming technology and channel coding schemes is higher than the message transmission rate of used modulation of other layers and channel coding schemes.The power ratio of distributing to the ground floor that uses the pseudo-characteristic beam-forming technology is distributed to the power height of other layers.

The of the present invention ten kind of data sending device comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, and one or more data flow is sent to data sink; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in described layer reallocation, wherein, one or more data flow is fixing respectively uses one deck emission, and the power ratio of distributing to the layer that uses the pseudo-characteristic beam-forming technology is distributed to the power height of other layers.

The 11 kind of data sending device of the present invention comprises: a plurality of transmitter modules are used under the precoding pattern one or more data flow being sent to data sink; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter modules are given in described layer reallocation, wherein, one or more data flow is fixing respectively uses one deck emission, and the message transmission rate of used modulation of one deck at least under the precoding pattern and channel coding schemes is higher than the used modulation of other layer except that this layer and the message transmission rate of channel coding schemes.

Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer is that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck is less one or more layers of sequence number, and other except that this layer layer is sequence number than all big layers of sequence number of one deck at least.The power that one deck at least under the precoding pattern is assigned to is more than the assigned power of other layer except that this layer.

The 12 kind of data sending device of the present invention comprises: a plurality of transmitter modules are used under the precoding pattern one or more data flow being sent to data sink; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter modules are given in described layer reallocation, wherein, one or more data flow is fixing respectively uses one deck emission, and the power that the one deck at least under the precoding pattern is assigned to is more than the assigned power of other layer except that this layer.

Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer is that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer is sequence number than all big layers of sequence number of one deck at least.

Description of drawings

Accompanying drawing provides further understanding of the present invention, and is attached to a part that constitutes the application among the application, illustrates that with specification embodiments of the invention are to explain principle of the present invention.In the accompanying drawings,

Fig. 1 shows the wireless communication system with Space-Time framework that uses multi-antenna array at transmitting terminal and receiving terminal simultaneously.

Fig. 2 is the MIMO structure according to the single codeword pattern of prior art;

Fig. 3 is the mode of Bit Allocation in Discrete on each antenna in the single codeword system according to prior art; And

Fig. 4 is the block diagram according to data sending device of the present invention.

Embodiment

Describe embodiments of the invention in detail below with reference to accompanying drawing.

Fig. 4 is the block diagram according to data sending device of the present invention.Data sending device of the present invention all comprises a plurality of transmitter modules, after a matrix is taken advantage of on the left side of the column vector of one or more composition that transmits, delivers on each transmitter module again and launches.Accordingly, each transmits, all with matrix in row multiply each other, each result who obtains delivers to each transmitter module respectively, we call this to this and transmit and launch by one deck, described one deck is equivalent to a wave beam or a virtual-antenna.

First kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, and data flow is sent to data sink; And data processing module, be used for handling and processed data stream being assigned to one or more layer to sent data flow, a plurality of transmitter module emissions are given in these layer reallocation, wherein, distribute to the number of information bit of the ground floor that uses the pseudo-characteristic beam-forming technology greater than the number of the information bit of distributing to other layers.More specifically, distribute information bit as much as possible to ground floor.First kind of data sending device of the present invention is applied to the single codeword pattern.

Second kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, and data flow is sent to data sink; And data processing module, be used for to sent data flow handle and with distribution of flows to one or more layer, these layers are distributed to described a plurality of transmitter module emission, wherein, the modulation system of layer (that is ground floor) use of using the pseudo-characteristic beam-forming technology is than the modulation system higher order of other layers use or multistage.Wherein, the data processing module power that give to use the layer of pseudo-characteristic beam-forming technology to distribute is higher than the power to other layers distribution.Second kind of data sending device of the present invention is applied to the single codeword pattern.

The third data sending device of the present invention comprises: a plurality of transmitter modules are used under the precoding pattern data flow being sent to data sink; And data processing module, be used for handling and processed data stream being assigned to one or more layer to sent data flow, a plurality of transmitter module emissions are given in these layer reallocation, wherein, pre-coding matrix has the M row, every row are corresponding to one deck, and the number of information bit of distributing to the one deck at least under the precoding pattern is greater than the number of the information bit of distributing to other layer except that this layer.The third data sending device of the present invention is applied to the single codeword pattern.

Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer can be that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer can be sequence number than all big layers of sequence number of one deck at least.The method of salary distribution of information bit is: successively information bit as much as possible is distributed to one deck and other layer except that this layer at least.Wherein, the method for salary distribution of information bit can for: information bit as much as possible is distributed to ground floor, again information bit as much as possible is distributed to the second layer ..., that is, successively information bit as much as possible distribute to sequence number less the layer.

The 4th kind of data sending device of the present invention comprises: a plurality of transmitter modules are used under the precoding pattern data flow being sent to data sink; And data processing module, be used for to sent data flow handle and with distribution of flows to one or more layer, a plurality of transmitter module emissions are given in these layer reallocation, the exponent number of the modulation system that the one deck at least under wherein, the precoding pattern uses is higher than the exponent number of the modulation system of other layer except that this layer.For example, ground floor 64QAM, second layer 64QAM, the 3rd layer of 16QAM, the 4th layer of QPSK.

Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer can be that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer can be sequence number than all big layers of sequence number of one deck at least.The power that data processing module distributes for one deck at least is higher than the power to other layer distribution except that this layer.The 4th kind of data sending device of the present invention is applied to the single codeword pattern.

The 5th kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, one or more data flow is sent to data sink, and each circuit-switched data stream wherein all is what to modulate with chnnel coding separately; And data processing module, be used for to sent one or more data flow handle respectively and with one or more distribution of flows to each layer, a plurality of transmitter modules emissions are given in these layer reallocation, wherein, each circuit-switched data stream repeating query ground uses each layer.For each circuit-switched data stream, all information bit as much as possible in the data flow is distributed to the ground floor that uses the pseudo-characteristic beam-forming technology.The 5th kind of data sending device of the present invention is applied to the situation b of many patterns of code words.

The 6th kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, one or more data flow is sent to data sink, and each circuit-switched data stream wherein all is what to modulate with chnnel coding separately; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in these layer reallocation, wherein, one or more data flow repeating query ground uses each layer, and each circuit-switched data stream flows at the modulation system higher order of other layers use or multistage than this circuit-switched data in the modulation system that ground floor adopted of using the pseudo-characteristic beam-forming technology.Wherein, for each circuit-switched data stream, the power that data processing module distributes for the ground floor of use pseudo-characteristic beam-forming technology is higher than the power to other layers distribution.The 6th kind of data sending device of the present invention is applied to the situation b of many patterns of code words.

The 7th kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under the precoding pattern, one or more data flow being sent to data sink, and each circuit-switched data stream wherein all is what to modulate with chnnel coding separately; And data processing module, be used for handling respectively to sent one or more data flow, and one or more distribution of flows is arrived each layer, these layer reallocation launch for a plurality of transmitter modules, wherein, one or more data flow repeating query ground uses each layer.For each circuit-switched data stream, the number of information bit of distributing to the one deck at least under the precoding pattern is greater than the number of distributing to the information bit of other one deck at least except that this layer, promptly earlier information bit as much as possible is distributed to ground floor, at a remaining information bit second layer of distributing to as much as possible ....The 7th kind of data sending device of the present invention is applied to the situation b of many patterns of code words.

At least one deck is to receive higher one or more layers of the value of signal interference ratio, and other except that this layer layer is that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck is less one or more layers of sequence number, and other except that this layer layer is sequence number than all big layers of sequence number of one deck at least.The method of salary distribution of information bit is: successively information bit as much as possible is distributed to one deck and other layer except that this layer at least.

The 8th kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under the precoding pattern, one or more data flow being sent to data sink, and each circuit-switched data stream wherein all is what to modulate with chnnel coding separately; And data processing module, be used for handling respectively to sent one or more data flow, and one or more distribution of flows is arrived each layer, these layer reallocation launch for a plurality of transmitter modules, wherein, one or more data flow repeating query ground uses each layer.For each circuit-switched data stream, the exponent number of the modulation system that the one deck at least under the precoding pattern uses is higher than the exponent number of the modulation system of other layer use except that this layer.

For example, first via data flow is at ground floor 64QAM, second layer 64QAM, the 3rd layer of 16QAM, the 4th layer of QPSK; And second circuit-switched data flows at ground floor 16QAM, second layer 16QAM, the 3rd layer of QPSK, the 4th layer of QPSK.Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer can be that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer can be sequence number than all big layers of sequence number of one deck at least.The method of salary distribution of information bit is: for each circuit-switched data stream, the assigned power of the one deck at least under the precoding pattern is more than the assigned power of other layer except that this layer.The 8th kind of data sending device of the present invention is applied to the situation b of many patterns of code words.

The 9th kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, one or more data flow is sent to data sink, and each circuit-switched data stream wherein all is what to modulate with chnnel coding separately; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in these layer reallocation, wherein, one or more data flow is fixing respectively uses certain one deck emission, and the message transmission rate of the used MCS of ground floor (modulation and channel coding schemes) of use pseudo-characteristic beam-forming technology is higher than the message transmission rate of the used MCS of other layers.The 9th kind of data sending device of the present invention is applied to the situation a of many patterns of code words.

The of the present invention ten kind of data sending device comprises: a plurality of transmitter modules, be used under tdd mode, using the pseudo-characteristic beam-forming technology, one or more data flow is sent to data sink, and each circuit-switched data stream wherein all is what to modulate with chnnel coding separately; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in these layer reallocation, wherein, one or more data flow is fixing respectively uses certain one deck emission, and the power ratio of distributing to the ground floor that uses the pseudo-characteristic beam-forming technology is distributed to the power height of other layers.The of the present invention ten kind of data sending device is applied to the situation a of many patterns of code words.

The 9th kind of above-mentioned data sending device can use simultaneously with the tenth kind of data sending device.

The 11 kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under the precoding pattern, one or more data flow being sent to data sink, and each circuit-switched data stream wherein all is what to modulate with chnnel coding separately; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter module emissions are given in these layer reallocation, wherein, one or more data flow is fixing respectively uses certain one deck emission, and the message transmission rate of used modulation of one deck at least under the precoding pattern and channel coding schemes is higher than the used modulation of other layer except that this layer and the message transmission rate of channel coding schemes.The 11 kind of data sending device of the present invention is applied to the situation a of many patterns of code words.

Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer can be that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer can be sequence number than all big layers of sequence number of one deck at least.The power that one deck at least under the precoding pattern is assigned to is more than the assigned power of other layer except that this layer.

The 12 kind of data sending device of the present invention comprises: a plurality of transmitter modules, be used under the precoding pattern, one or more data flow being sent to data sink, and each circuit-switched data stream wherein all is what to modulate with chnnel coding separately; And data processing module, be used for handling respectively to sent one or more data flow, and with one or more distribution of flows to each the layer, a plurality of transmitter modules are given in described layer reallocation, wherein, one or more data flow is fixing respectively uses certain one deck emission, and the power that the one deck at least under the precoding pattern is assigned to is more than the assigned power of other layer except that this layer.The 12 kind of data sending device of the present invention is applied to the situation a of many patterns of code words.

Wherein, one deck can be to receive higher one or more layers of the value of signal interference ratio at least, and other except that this layer layer can be that the value of reception signal interference ratio is lower than all layers of one deck at least.At least one deck can be less one or more layers of sequence number, and other except that this layer layer can be sequence number than all big layers of sequence number of one deck at least.

The 11 kind of above-mentioned data sending device can use simultaneously with the 12 kind of data sending device.

The exponent number of above-mentioned modulation system is higher, the bit number that is meant the information that a symbol of this modulation system is entrained is more, such as, the bit number of the entrained information of symbol of QPSK, 16QAM and three kinds of modulation systems of 64QAM is respectively 2,4 and 6, be higher than QPSK so we can say the exponent number of 16QAM modulation system, and the exponent number of 64QAM modulation system is higher than 16QAM.

The message transmission rate of above-mentioned MCS (modulation and channel coding schemes) is higher, is meant that the data bit number that this MCS transmitted is more under a situation that the symbolic number that packet comprised is identical.For example, the MCS of modulation system 16QAM and Turbo code code check 3/4, its message transmission rate both had been higher than the MCS of modulation system QPSK and Turbo code code check 3/4, also was higher than the MCS of modulation system 16QAM and Turbo code code check 1/2.

Utilization of the present invention does not need to feed back transmitting terminal in some occasions and just knows that in its transmitting antenna (transmitter module) which has received signal to noise ratio preferably at receiving terminal usually, and this is to learn at the statistical law of receiving terminal received signal to noise ratio relative size according to transmitter module.

A kind of situation is: under the situation of TDD, high pass is at the motion C30-20060626-030R2_QCOM_UHDR-One_Proposal_v1.0 of AIE, in " Qualcomm Proposal for 3 GPP2 Physical Layer ", a kind of technology that is called as pseudo-characteristic beam shaping (pseudo-eigeh-beamforming) has been proposed.This is under the tdd mode, and portable terminal (such as mobile phone) has only 1 transmitting antenna usually, and the situation of 2 to 4 reception antennas is arranged simultaneously.More specifically, portable terminal have n (n=2 usually ..., 4) antenna, wherein have only 1 both to be used for sending and also to be used for receiving, and other n-1 only be used for receiving.The base station utilizes under the tdd mode, the characteristic of up-downgoing channel symmetry, can pass through 1 transmitting antenna of portable terminal in the up channel pilot transmitted, estimate at down channel, this transmitting antenna of this portable terminal is during as reception antenna, and each transmitting antenna of base station is to the channel of this reception antenna.

If multi-layer data is transmitted to portable terminal, ground floor uses the pseudo-characteristic beam-forming technology, promptly utilizes each transmitting antenna of base station that the base station knows by symmetry channel to this reception antenna of portable terminal, does wave beam formation.Then, other each layer uses the wave beam with the used wave beam quadrature of ground floor to transmit.The form of this MIMO transmission is called as pseudo-characteristic beam shaping (pseudo-eigen-beamforming).

Suppose that mobile phone has 2 antennas, wherein have only 1 to be used for emission, the base station can pass 2 layer data to mobile phone so.Usually receiving terminal uses ZF (ZF:Zero Forcing) algorithm or least mean-square error (MMSE:Minimal Mean-Square Error) algorithm.Verified, if receiving terminal uses zero forcing algorithm, even suppose when receiving second layer data, perfectly eliminate the interference of ground floor data, suppose that just ground floor always is correctly decoded, the received signal to noise ratio SNR1 of ground floor data compares with the received signal to noise ratio SNR2 of second layer data, and the assembly average of SNR1 is 2 times of assembly average of SNR2, and simulation result shows that SNR1 is 75% greater than the probability of SNR2, greater than 1/2.In the reality, when receiving second layer data, the interference of imperfectible elimination ground floor data, just ground floor can not always be correctly decoded, and certainly exists certain error rate, so actual SNR2 can be littler.If receiving terminal uses least-mean-square error algorithm, also there is similar conclusion.

When receiving terminal used zero forcing algorithm, the derivation of above conclusion was as follows:

1) suppose that there are 2 transmitting antennas the base station, mobile phone has 2 reception antennas.The mathematic(al) representation that signal transmits and receives is as follows:

$\left[\begin{array}{c}{r}_1\\ {\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">r</figure-callout>}}_2\end{array}\right]=\left[\begin{array}{cc}{h}_1& h_2\\ g_1& g_2\end{array}\right]\left[\begin{array}{c}{t}_1\\ {\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">t</figure-callout>}}_2\end{array}\right]+\begin{array}{}\left[\begin{array}{c}{n}_1\\ {\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}_2\end{array}\right]\end{array}$

Here, r ₁And r ₂Be 2 received signals that reception antenna obtains of mobile phone, n ₁And n ₂Be noise, h ₁And h ₂Be respectively base station transmit antennas 1 and 2 channels to portable terminal reception antenna 1, as previously mentioned, h ₁And h ₂Obtained by the channel symmetry characteristic of base station by tdd mode, and g ₁And g ₂Be respectively base station transmit antennas 1 and 2 channels to portable terminal reception antenna 2, g is not also known in the base station ₁And g ₂t ₁And t ₂Be the signal of delivering to the physical antenna emission, actual s emission signal s ₁And s ₂Vector and the pre-coding matrix formed multiply each other, and obtain t ₁And t ₂Deliver to the physical antenna emission, corresponding mathematic(al) representation is as follows:

$\left[\begin{array}{c}{t}_1\\ {\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">t</figure-callout>}}_2\end{array}\right]=\left[\begin{array}{cc}{a}_1& b_1\\ a_2& b_2\end{array}\right]\left[\begin{array}{c}{s}_1\\ {\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">s</figure-callout>}}_2\end{array}\right]$

Here,

It is pre-coding matrix.

Because [h is known in the base station ₁h ₂], so the employed wave beam of ground floor data forms vector be $\left[\begin{array}{c}{a}_1\\ a_2\end{array}\right]=\frac{1}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\left[\begin{array}{c}{h}_1^{*}\\ {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2^{*}\end{array}\right]$ 。And the remaining employed wave beam of second layer data forms vector, is made as

, need form vectorial quadrature with the employed wave beam of ground floor data, thereby

Satisfy ${\left[\begin{array}{c}{b}_1\\ b_2\end{array}\right]}^H\frac{1}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\left[\begin{array}{c}{h}_1^{*}\\ {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2^{*}\end{array}\right]=0\&DoubleRightArrow;\left[\begin{array}{c}{b}_1\\ b_2\end{array}\right]=\frac{1}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\left[\begin{array}{c}-h_2\\ h_1\end{array}\right].$ Thereby pre-coding matrix is $\left[\begin{array}{cc}{a}_1& b_1\\ a_2& b_2\end{array}\right]=\frac{1}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\left[\begin{array}{cc}{h}_1^{*}& -h_2\\ {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2^{*}& h_1\end{array}\right].$

So $\left[\begin{array}{c}{r}_1\\ {\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">r</figure-callout>}}_2\end{array}\right]=\left[\begin{array}{cc}{h}_1& h_2\\ g_1& {\mathrm{<figure-callout\; id="2"\; label="g"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">g</figure-callout>}}_2\end{array}\right]\frac{1}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\left[\begin{array}{cc}{h}_1^{*}& -h_2\\ {\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2^{*}& h_1\end{array}\right]\left[\begin{array}{c}{s}_1\\ {\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">s</figure-callout>}}_2\end{array}\right]+\begin{array}{c}\left[\begin{array}{c}{n}_1\\ {\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}_2\end{array}\right]\end{array}\&DoubleRightArrow;$

$\left[\begin{array}{c}{r}_1\\ {\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">r</figure-callout>}}_2\end{array}\right]=\frac{1}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\left[\begin{array}{cc}{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2& 0\\ g_1{h}_1^{*}+g_2{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2^{*}& -g_1{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2+g_2{h}_1\end{array}\right]\left[\begin{array}{c}{s}_1\\ {\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">s</figure-callout>}}_2\end{array}\right]+\left[\begin{array}{c}{n}_1\\ {\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}_2\end{array}\right]$

Obtain from top formula $r_1=\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}\&CenterDot;s_1+n_1---\left(1\right)$ And ${\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">r</figure-callout>}}_2=\frac{g_1{h}_1^{*}+g_2{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2^{*}}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\&CenterDot;s_1+\frac{-g_1{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2+g_2{h}_1}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">s</figure-callout>}}_2+n_1---\left(2\right)$

Can obtain by (1) Signal s ₁Estimated value, and obtain

Received signal to noise ratio be ${\mathrm{SNR}}_1=({\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2)\frac{{\mathrm{\&sigma;}}_s^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}^2}.$

Suppose

It is always correct that (promptly hypothesis is tried to achieve

Error sign ratio be 0, in practice

Error sign ratio can not be 0), can in (2), eliminate s fully so ₁Interference, (2) become then, $r_2-\frac{g_1{h}_1^{*}+g_2{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2^{*}}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\&CenterDot;{\hat{s}}_1={\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">r</figure-callout>}}_2^{\&prime;}=\frac{-g_1{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2+g_2{h}_1}{\sqrt{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}}\&CenterDot;{\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">s</figure-callout>}}_2+n_1---\left(3\right)$

Can obtain by (3)

Signal s ₂Estimated value, and obtain

Received signal to noise ratio be ${\mathrm{<figure-callout\; id="2"\; label="SNR"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">SNR</figure-callout>}}_2=\frac{{|-g_1{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2+g_2{h}_1|}^2}{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}\frac{{\mathrm{\&sigma;}}_s^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}^2}.$

Note, in the mimo channel model of common name, h ₁, h ₂, g ₁And g ₂All be to add up independently Gaussian random variable again each other, average is zero, is without loss of generality, and supposes that its variance is a unit value 1.

Suppose stochastic variable h ₁And h ₂Value determined and g ₁And g ₂At random, obtain

The desired value of received signal to noise ratio be n.

$E\left\{{\mathrm{SNR}}_2\right\}=E\{(-g_1{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2+g_2{h}_1)\&CenterDot;{(-g_1{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2+g_2{h}_1)}^{*}\}\frac{1}{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}\frac{{\mathrm{\&sigma;}}_s^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}^2}$

$({\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2{\left|g_1\right|}^2+{\left|h_1\right|}^2{\left|{\mathrm{<figure-callout\; id="2"\; label="g"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">g</figure-callout>}}_2\right|}^2)\frac{1}{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2}\frac{{\mathrm{\&sigma;}}_s^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}^2}=\frac{{\mathrm{\&sigma;}}_s^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}^2}$

And

The desired value of received signal to noise ratio be $E\left\{{\mathrm{SNR}}_1\right\}=E\{{\left|h_1\right|}^2+{\left|{\mathrm{<figure-callout\; id="2"\; label="h"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_2\right|}^2\}\frac{{\mathrm{\&sigma;}}_s^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}^2}=2\frac{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="s"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">s</figure-callout>}}^2}{{\mathrm{\&sigma;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">n</figure-callout>}}^2}.$

So proved E{SNR ₁}=2E{SNR ₂, this point has also obtained confirmation by emulation.Emulation has also confirmed SNR ₁＞SNR ₂Probability be 75%, greater than 1/2.Consider

Error sign ratio be not 0, thereby can not eliminate s fully ₁Interference, SNR so ₂Value than last surface analysis obtain littler, thereby SNR ₁＞SNR ₂Probability greater than 75%.

2) general, suppose that there is M transmitting antenna the base station, mobile phone has N reception antenna (M is more than or equal to 2, and N is more than or equal to M).The mathematic(al) representation that signal transmits and receives is as follows:

$\left[\begin{array}{c}{r}_1\\ .\\ .\\ .\\ r_N\end{array}\right]=\left[\begin{array}{cccccc}{h}_{11}& h_{12}& .& .& .& h_{1M}\\ h_{21}& h_{22}& .& .& .& h_{2M}\\ .& .& .& & & .\\ .& .& & .& & .\\ .& .& & & .& .\\ h_{N1}& {\mathrm{<figure-callout\; id="2"\; label="h\; N"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">h</figure-callout>}}_N& .& .& .& h_{\mathrm{NM}}\end{array}\right]\left[\begin{array}{c}{t}_1\\ .\\ .\\ .\\ t_M\end{array}\right]+\left[\begin{array}{c}{n}_1\\ .\\ .\\ .\\ n_N\end{array}\right]$

As previously mentioned, [h ₁₁h ₁₂H _1M] obtained by the channel symmetry characteristic of base station by tdd mode.t ₁, t ₂..., t _MBe the signal of delivering to the physical antenna emission, actual emission+signal s ₁, s ₂..., s _MVector and the pre-coding matrix formed multiply each other, and obtain t ₁, t ₂..., t _MDeliver to the physical antenna emission, corresponding mathematic(al) representation is as follows:

$\left[\begin{array}{c}{t}_1\\ .\\ .\\ .\\ t_M\end{array}\right]=\left[\begin{array}{cccccc}{a}_{11}& a_{12}& .& .& .& a_{1M}\\ a_{21}& a_{22}& .& .& .& a_{2M}\\ .& .& .& & & .\\ .& .& & .& & .\\ .& .& & & .& .\\ a_{M1}& a_{\mathrm{<figure-callout\; id="2"\; label="M"\; filenames="H061F3203X20060915E000011.png"\; state="\{\{state\}\}">M</figure-callout>}2}& .& .& .& a_{\mathrm{MM}}\end{array}\right]\left[\begin{array}{c}{s}_1\\ .\\ .\\ .\\ s_M\end{array}\right]$

Here,

It is pre-coding matrix.

Because [h is known in the base station ₁₁h ₁₂H _1M], so ground floor data s ₁Employed wave beam forms vector $\left[\begin{array}{c}{a}_{11}\\ a_{21}\\ .\\ .\\ .\\ a_{M1}\end{array}\right]=\frac{1}{\sqrt{{\left|h_{11}\right|}^2+{\left|h_{12}\right|}^2+...+{\left|h_{1M}\right|}^2}}\left[\begin{array}{c}{h}_{11}^{*}\\ h_{12}^{*}\\ .\\ .\\ .\\ h_{1M}^{*}\end{array}\right],$ -and remaining the 2nd, 3 ..., M layer data s ₂, s ₃..., s _MEmployed wave beam forms vector, is each vector that forms vectorial quadrature with the employed wave beam of ground floor data.So, only comprise s in the received signal of first reception antenna of mobile phone ₁Form the result that the back arrives first reception antenna by each transmitted antednna beam of base station, and remaining the 2nd, 3 ..., M layer data s ₂, s ₃..., s _MEmployed wave beam forms vector, because form vectorial quadrature with the employed wave beam of ground floor data, can not received by first reception antenna.Thereby receiving s ₁Process in, can think the interference that does not exist other to transmit.And receiving the 2nd, 3 of remainder ..., M layer data s ₂, s ₃..., s _MProcess in, even the hypothesis s ₁Interference eliminated s fully ₂, s ₃..., s _MAlso can be interfering with each other, thus its received signal to noise ratio can be less than second layer signal s under the aforementioned situation of having only 2 transmitting antennas and 2 reception antennas ₂Received signal to noise ratio.So, s ₁Received signal to noise ratio, compare s ₂, s ₃..., s _MReceived signal to noise ratio better.Thereby also be suitable for method of the present invention, promptly distribute information bit as much as possible to give s ₁

Suppose that mobile phone has 4 antennas, wherein have only 1 to be used for emission, the base station can pass 4 layer data to mobile phone so.Verified, the received signal to noise ratio SNR1 of ground floor is more bigger than other received signal to noise ratio SNR2, SNR3, SNR4 of 3 layers, because there is not interference in ground floor when receiving, and other 3 layers can interfere with each other when receiving, even the interference of ground floor is perfectly eliminated when receiving.So, in the pseudo-characteristic beam forming technique that uses tdd mode, can be assigned to ground floor to information bit as much as possible.

Another kind of situation is: the situation of using the SCW of pre-coding matrix in addition.The motion C802.20-05-69AirInterfaceSpec_Final_Update of high pass in IEEE 802.20, the 12nd chapter " Precoding and SDMACodebooks " in " MBFDD and MBTDD:ProposedDraft Air Interface Specification " has provided the design of pre-coding matrix.Defined a plurality of pre-coding matrixes in this motion, the receiving terminal feedback is the sequence number of an optimum pre-coding matrix wherein, and transmitting terminal uses this pre-coding matrix, carries out transmitting launching after the precoding again.Suppose that 44 are received, the sequence number of a best pre-coding matrix of receiving terminal feedback.Because the received signal to noise ratio of the pairing layer of the 1st row of pre-coding matrix is best, the received signal to noise ratio of the pairing layer of the 2nd row is secondly good, the received signal to noise ratio of the pairing layer of the 3rd row is relatively poor, the received signal to noise ratio of the pairing layer of the 4th row is the poorest, so, information bit as much as possible is assigned to ground floor, 2 layers of its order, its order is 3 layers again.

In addition, as previously mentioned, under the precoding pattern, verified by emulation, under desirable precoding pattern, the received signal to noise ratio of m layer is also than more than the m+1 layer mean height 3dB, so also can suppose to have the M layer, the exponent number of the employed modulation system of one deck is higher than other layer so at least.Be numbered the 1st, 2 more specifically ..., the M layer, the 1st layer of modulation system is higher than or equals the 2nd layer so, the 2nd layer of modulation system is higher than or equals the 3rd layer ....Above feature progressively increase, the power of the 1st layer of distribution is more than the 2nd layer, the power of the 2nd layer of distribution is more than the 3rd layer ... to be applied to single codeword (SCW) pattern.

As previously mentioned, transmitting terminal makes full use of the statistical law or the rule of each known antenna received signal to noise ratio relative size, and promptly under the situation of two antennas, the result of statistical average is: the average of the received signal to noise ratio of ground floor is than big 3 dB of the second layer.Thereby can always use than second layer higher order or multistage modulation system at ground floor, use then ground floor use 16QAM modulation system of QPSK modulation system such as the second layer, the second layer uses then ground floor use 64QAM modulation system of 16QAM modulation system.

In addition, when ground floor used higher order modulation schemes, the solution of the present invention was returned ground floor and is distributed higher power, and the reason of doing like this has 2 points:

1) in the present communication standard, the employed modulation system of transfer of data mainly is these three kinds of QPSK, 16QAM and 64QAM.And in order to reach identical bit error rate, 16QAM is than more than the common high 5dB of the needed signal to noise ratio of QPSK, and 64QAM is than more than the common high 5dB of the needed signal to noise ratio of 16QAM.As previously mentioned, the average of the received signal to noise ratio of ground floor is than the only big 3dB of received signal to noise ratio of the second layer, so, by distributing more power to ground floor, can so that the received signal to noise ratio of ground floor than the received signal to noise ratio of the second layer greatly near 5dB, thereby make that Turbo coding back is more approaching in the bit error rate of receiving terminal by each bit of Channel Transmission.And according to the principle of Turbo code, if each bit behind the Turbo coding is more approaching in the bit error rate of receiving terminal, then Zheng Ti Packet Error Ratio is less.

2) distribute more power to ground floor, also, do channel capacity even bigger like this because according to the Water-Filling theorem.The Water-Filling theorem: distribute more power for the higher layer of received signal to noise ratio, channel capacity can be bigger.

Describe one embodiment of the invention below in detail:

Suppose to have two transmitting antennas and two reception antennas, with all modulation and coded system (Modulation ﹠amp of transmitting antenna support; Coding Scheme is called for short MCS) make a table, an example commonly used is as shown in table 2, is kept at transmitting terminal and receiving terminal simultaneously.Receiving terminal is calculated Signal to Interference plus Noise Ratio (Signal to Interference and NoiseRatio is called for short SINR) according to channel situation, and the MCS index is fed back to transmitting terminal.

The MCS index	Modulation	Encoding rate	Bit is represented
				6	Ground floor 64QAM, second layer 16QAM	3/4	100

5	Ground floor 64QAM, second layer 16QAM	1/2	110
				4	Ground floor 16QAM, second layer QPSK	3/4	010
3	Ground floor 16QAM, second layer QPSK	1/2	011
				2	Ground floor 16QAM, second layer QPSK	1/4	001
Not 1 (not launching)	?-	-	000

Table 2:MCS mapping table

For single codeword and packet, data flow to be sent is at first passed through chnnel coding, channel interleaving, operations such as rate-matched, be the two-way bit stream along separate routes then, this two-way bit stream carries out different planisphere mappings respectively (promptly again, modulation) (bit stream such as the ground floor emission uses the 16QAM mode to carry out the planisphere mapping, and the bit stream of second layer emission uses the QPSK mode to carry out the planisphere mapping), the symbols streams that obtains launches through different layers that (2 are the number of transmitting antenna again, it also is the number of layer, what prior art was said is to send by different transmitting antennas, the present invention is with different layers, because TDD sends with different layers, layer is equivalent to a wave beam, can be regarded as a virtual-antenna).The bit number that bit stream comprised by above-mentioned two-layer emission is also inequality, because 1 QPSK symbol can transmit 2 bit informations, 1 16QAM symbol can transmit 4 bit informations, and 1 64QAM symbol can transmit 6 bit informations, and the symbol rate of each layer, it is identical promptly transmitting what symbols, so, if the bit stream of ground floor emission adopts the 16QAM mode to carry out the planisphere mapping, the bit stream of second layer emission adopts the QPSK mode to carry out the planisphere mapping, and the bit number that bit stream comprised of ground floor emission is 2 times of the bit number that bit stream comprised of second layer emission so; And if the bit stream of ground floor emission adopts the 64QAM mode to carry out the planisphere mapping, the bit stream of second layer emission adopts the 16QAM mode to carry out the planisphere mapping, so the bit number that bit stream comprised of ground floor emission be second layer emission the bit number that bit stream comprised 3/2=1.5 doubly.Receiving terminal calculates the two-layer reception SINR separately of transmitting terminal, obtains two-layer average received SINR thus, looks into the average MCS of MCS concordance list (i.e. table 2) feedback.

Adopt unified channel encoder, RM (RateMatching, rate-matched) mode in transmitting terminal data flow to be launched, but each layer adopts different modulation systems, then all data are assigned to each layer, launch after handling accordingly.According to the difference of the multi-access mode that system adopted, channel code or channel resources such as frequency or time that this two-layer data occupancy of launching is identical.

As shown in Figure 2, splitter will be assigned on each antenna according to certain rule through the bit sequence after the rate-matched and transmit, as previously mentioned, (bit stream such as the ground floor emission uses 16QAM to carry out the planisphere mapping to this two-way bit stream through different planisphere mappings respectively again, and the bit stream of second layer emission uses QPSK to carry out the planisphere mapping), the symbols streams that obtains is launched through different layers again.

Wherein, the planisphere mapping comprises BPSK, QPSK, 8PSK, 16QAM, 64QAM modulation systems such as (that use always in the standard are three kinds of QPSK, 16QAM, 64QAM).The feedback quantity of this mode of SCW is less, and because the channel encoder that adopts has only one, therefore CRC check is at the data on all transmitting antennas, so H-ARQ mechanism is comparatively simple, in case showing, CRC check makes mistakes, all data when pre-treatment retransmit so, only need an ack/nack signal to get final product.

Under certain emission signal to noise ratio, during the linear receiver of MMSE (least mean-square error), emulation is empirical tests, and gross power is constant, and the power of ground floor is that channel capacity is not less than the channel capacity of power averaging allocative decision at least under the situation of twice of power of the second layer; And emulation also proves, the power of ground floor is 1.19, and the power of the second layer is under 0.77 the situation, average channel capacity maximum.

The solution of the present invention has been passed through simulating, verifying, and emulation shows, the effect of technology of the present invention.Introduce emulation below, its condition is:

1) two reception antennas of two transmitting antennas, input information bits length always 256.Transmitting terminal all uses the pseudo-characteristic beam-forming technology.

2) the transmitting terminal modulation system has following three kinds:

Modulation system a, the bit stream of two-layer emission all uses the QPSK modulation system, total bit number=512 of transmitting on the antenna so, encoder bit rate=1/2;

Modulation system b, the bit stream of ground floor emission uses 16QAM to modulate, and the bit stream of second layer emission uses QPSK to modulate total bit number=768 of transmitting on the antenna so, encoder bit rate=1/3 (peculiar methods of the present invention);

Modulation system c, the bit stream of two-layer emission all uses 16QAM, total bit number=1024 of transmitting on the antenna so, encoder bit rate=1/4.

Emulation has proved that the effect of b is all better than a or c, if distribute more power at ground floor, and gross power is constant, and the effect of b can further be improved so.

In the present invention, transmitting terminal makes full use of the statistical law or the rule of each known antenna received signal to noise ratio relative size, and information bit as much as possible is assigned to received signal to noise ratio better or the received signal to noise ratio of statistical average preferably on the transmitting antenna.Like this, save system resource, improved systematic function.

Top technical scheme also can be generalized to MCW (many patterns of code words).That is, under the tdd mode, when using pseudo-characteristic beam shaping (pseudo-eigen-beamforming) technology, above-mentioned technical scheme also is generalized to MCW (many patterns of code words); And when using precoding technique, above-mentioned technical scheme also is generalized to MCW (many patterns of code words).

Following several situations are arranged:

1, under aforesaid situation b, the information bit of each circuit-switched data stream is placed on the ground floor of tdd mode, the preferential again second layer of ground floor recursion so successively when perhaps being placed on precoding technique as far as possible.(because situation a the time, the floor that each road is used is fixed, so be not suitable for this programme.)

2, under aforesaid situation b, the ground floor of tdd mode adopts the modulation system of higher-order; The ground floor modulation system is higher than or equals the second layer during precoding technique, and second layer modulation system is higher than or equals the 3rd layer, so successively recursion.As a supplement, the ground floor of tdd mode distributes more power; Ground floor power is higher than or equals the second layer during precoding technique, and second layer power is higher than or equals the 3rd layer, so successively recursion.

3, under aforesaid situation a, be merely that the ground floor of tdd mode distributes higher power; Ground floor power is higher than or equals the second layer during precoding technique, and second layer power is higher than or equals the 3rd layer, so successively recursion.So just have gain,, can improve channel capacity like this, and each layer all is Adaptive Modulation, receive the maximum MCS that SINR can allow so can reach it because by the Water-Filling theorem.

4, under aforesaid situation a, the ground floor of tdd mode adopts the MCS of higher data transmission rate; The message transmission rate of the MCS of ground floor is higher than or equals the second layer during precoding technique, and the message transmission rate of the MCS of the second layer is higher than or equals the 3rd layer, so successively recursion.As a supplement, the more power of ground floor fixed allocation of tdd mode; Ground floor power is higher than or equals the second layer during precoding technique, and second layer power is higher than or equals the 3rd layer, so successively recursion.The MCS of said higher data transmission rate, be meant that information transmitted is more under this MCS, such as the MCS information transmitted of 16QAM 2/3 code check MCS more than QPSK 2/3 code check, also more than the MCS of 16QAM 1/2 code check, thus just can modulation system the identical and higher higher data transmission rate that reaches of code check Turbo code.

By this regulation, can reach the effect of the feedback quantity that reduces MCW.It is two-layer to suppose that thereby transmitting terminal has two antennas to have, and the MCS form has 32 kinds of MCS to indicate with 5 bits, and the two-layer MCS that gets is arranged with 2 usually ⁵* 2 ⁵=2 ¹⁰Thereby plant the feedback that needs 10 bits, the MCS transmission rate of having stipulated ground floor now must be higher than or equal after the second layer, and the MCS when the second layer is respectively 1,2 so, 3, ... 32, then the MCS of ground floor is respectively 1-32,2=32,3-32, ..., 32, thus the possible situation that amounts to is reduced to $\underset{i=1}{\overset{32}{\mathrm{\&Sigma;}}}(32-i+1)=32\&times;32-32\frac{31}{2}=32\&times;16.5\&ap;2^9,$ Thereby the feedback that only needs 9 bits can reduce the feedback of 1 bit.

Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (31)

1. data sending device is characterized in that comprising:

A plurality of transmitter modules are used for using the pseudo-characteristic beam-forming technology under tdd mode, and data flow is sent to data sink; And

Data processing module, be used for to sent data flow handle and with distribution of flows to one or more layer, described a plurality of transmitter module emission is given in described layer reallocation, wherein, use modulation system that the layer of pseudo-characteristic beam-forming technology uses than the modulation system higher order of other layers use or multistage, described data processing module is higher than power to other layers distribution for the power of the layer distribution of using the pseudo-characteristic beam-forming technology.

2. data sending device according to claim 1 is characterized in that described data sending device is applied to the single codeword pattern.

3. data sending device is characterized in that comprising:

A plurality of transmitter modules are used under the precoding pattern data flow being sent to data sink; And

Data processing module, be used for handling and processed data stream being assigned to one or more layer to sent data flow, described a plurality of transmitter module emission is given in described layer reallocation, wherein, pre-coding matrix has the M row, every row are corresponding to one deck, the number of information bit of distributing to the one deck at least under the precoding pattern is greater than the number of the information bit of distributing to other layer except that this layer, and the method for salary distribution of described information bit is: successively information bit as much as possible is distributed to described one deck at least and described other layer except that this layer.

4. data sending device according to claim 3 is characterized in that, described one deck at least is to receive higher one or more layers of the value of signal interference ratio, and described other layer except that this layer is all layers that the value of reception signal interference ratio is lower than described one deck at least.

5. data sending device according to claim 3 is characterized in that, described one deck at least is less one or more layers of sequence number, and described other layer except that this layer is sequence number all layers bigger than the sequence number of described one deck at least.

6. according to claim 4 or 5 described data sending devices, it is characterized in that described data sending device is applied to the single codeword pattern.

7. data sending device is characterized in that comprising:

A plurality of transmitter modules are used under the precoding pattern data flow being sent to data sink; And

Data processing module, be used for to sent data flow handle and with distribution of flows to one or more layer, described a plurality of transmitter module emission is given in described layer reallocation, wherein, the exponent number of the modulation system that the one deck at least under the precoding pattern uses is higher than the exponent number of the modulation system of other layer except that this layer, and the power that described data processing module distributes for described one deck at least is higher than the power to described other layer distribution except that this layer.

8. data sending device according to claim 7 is characterized in that, described one deck at least is to receive higher one or more layers of the value of signal interference ratio, and described other layer except that this layer is all layers that the value of reception signal interference ratio is lower than described one deck at least.

9. data sending device according to claim 8 is characterized in that, described one deck at least is less one or more layers of sequence number, and described other layer except that this layer is sequence number all layers bigger than the sequence number of described layer at least.

10. according to Claim 8 or 9 described data sending devices, it is characterized in that described data sending device is applied to the single codeword pattern.

11. a data sending device is characterized in that comprising:

A plurality of transmitter modules are used for using the pseudo-characteristic beam-forming technology under tdd mode, and one or more data flow is sent to data sink; And

Data processing module, be used for to sent one or more data flow handle respectively and with described one or more distribution of flows to each the layer, described a plurality of transmitter module emission is given in described each layer reallocation, wherein, described each circuit-switched data stream repeating query ground uses described each layer, and, all as much as possible information bit is distributed to the layer that uses the pseudo-characteristic beam-forming technology for each circuit-switched data stream.

12. a data sending device is characterized in that comprising:

A plurality of transmitter modules are used for using the pseudo-characteristic beam-forming technology under tdd mode, and one or more data flow is sent to data sink; And

Data processing module, be used for handling respectively to sent one or more data flow, and with described one or more distribution of flows to each the layer, described a plurality of transmitter module emission is given in described layer reallocation, wherein, described one or more data flow repeating query ground uses described each layer, and the modulation system that adopts at the layer that uses the pseudo-characteristic beam-forming technology of described each circuit-switched data stream than described circuit-switched data stream at the modulation system higher order of other layers use or multistage.

13. data sending device according to claim 12 is characterized in that, for each circuit-switched data stream, the power that described data processing module distributes for the layer of use pseudo-characteristic beam-forming technology is higher than the power to other layers distribution.

14. a data sending device is characterized in that comprising:

A plurality of transmitter modules are used under the precoding pattern one or more data flow being sent to data sink; And

Data processing module, be used for handling respectively to sent one or more data flow, and with described one or more distribution of flows to each the layer, described a plurality of transmitter module emission is given in described layer reallocation, wherein, described one or more data flow repeating query ground uses described each layer, and for described each circuit-switched data stream, and the number of information bit of distributing to the one deck at least under the precoding pattern is greater than the number of distributing to the information bit of other one deck at least except that this layer.

15. data sending device according to claim 14 is characterized in that, described one deck at least is to receive higher one or more layers of the value of signal interference ratio, and described other layer except that this layer is all layers that the value of reception signal interference ratio is lower than described one deck at least.

16. data sending device according to claim 14 is characterized in that, described one deck at least is less one or more layers of sequence number, and described other layer except that this layer is sequence number all layers bigger than the sequence number of described one deck at least.

17., it is characterized in that the method for salary distribution of described information bit is: successively information bit as much as possible is distributed to described one deck at least and described other layer except that this layer according to claim 15 or 16 described data sending devices.

18. a data sending device is characterized in that comprising:

A plurality of transmitter modules are used under the precoding pattern one or more data flow being sent to data sink; And

Data processing module, be used for handling respectively to sent one or more data flow, and with described one or more distribution of flows to each the layer, described a plurality of transmitter module emission is given in described layer reallocation, wherein, described one or more data flow repeating query ground uses described each layer, and for each circuit-switched data stream, the exponent number of the modulation system that the one deck at least under the precoding pattern uses is higher than the exponent number of the modulation system of other layer use except that this layer.

19. data sending device according to claim 18 is characterized in that, described one deck at least is to receive higher one or more layers of the value of signal interference ratio, and described other layer except that this layer is all layers that the value of reception signal interference ratio is lower than described one deck at least.

20. data sending device according to claim 18 is characterized in that, described one deck at least is less one or more layers of sequence number, and described other layer except that this layer is sequence number all layers bigger than the sequence number of described one deck at least.

21. according to claim 19 or 20 described data sending devices, it is characterized in that, the method of salary distribution of described information bit is: for each circuit-switched data stream, the assigned power of the one deck at least under the precoding pattern is more than the assigned power of described other layer except that this layer.

22. a data sending device is characterized in that comprising:

A plurality of transmitter modules are used for using the pseudo-characteristic beam-forming technology under tdd mode, and one or more data flow is sent to data sink; And

Data processing module, be used for handling respectively to sent one or more data flow, and with described one or more distribution of flows to each the layer, described a plurality of transmitter module emission is given in described layer reallocation, wherein, described one or more data flow is fixing respectively uses one deck emission, and the message transmission rate of layer used modulation of use pseudo-characteristic beam-forming technology and channel coding schemes is higher than the message transmission rate of used modulation of other layers and channel coding schemes.

23. data sending device according to claim 22 is characterized in that, the power ratio of distributing to the ground floor that uses the pseudo-characteristic beam-forming technology is distributed to the power height of other layers.

24. a data sending device is characterized in that comprising:

A plurality of transmitter modules are used for using the pseudo-characteristic beam-forming technology under tdd mode, and one or more data flow is sent to data sink; And

Data processing module, be used for handling respectively to sent one or more data flow, and with described one or more distribution of flows to each the layer, described a plurality of transmitter module emission is given in described layer reallocation, wherein, described one or more data flow is fixing respectively uses one deck emission, and the power ratio of distributing to the layer that uses the pseudo-characteristic beam-forming technology is distributed to the power height of other layers.

25. a data sending device is characterized in that comprising:

A plurality of transmitter modules are used under the precoding pattern one or more data flow being sent to data sink; And

Data processing module, be used for handling respectively to sent one or more data flow, and with described one or more distribution of flows to each the layer, described a plurality of transmitter modules are given in described layer reallocation, wherein, described one or more data flow is fixing respectively uses one deck emission, and the message transmission rate of used modulation of one deck at least under the described precoding pattern and channel coding schemes is higher than the used modulation of other layer except that this layer and the message transmission rate of channel coding schemes.

26. data sending device according to claim 25 is characterized in that, described one deck at least is to receive higher one or more layers of the value of signal interference ratio, and described other layer except that this layer is all layers that the value of reception signal interference ratio is lower than described one deck at least.

27. data sending device according to claim 25 is characterized in that, described one deck at least is less one or more layers of sequence number, and described other layer except that this layer is sequence number all layers bigger than the sequence number of described one deck at least.

28., it is characterized in that the power that the one deck at least under the described precoding pattern is assigned to is more than the assigned power of described other layer except that this layer according to claim 26 or 27 described data sending devices.

29. a data sending device is characterized in that comprising:

A plurality of transmitter modules are used under the precoding pattern one or more data flow being sent to data sink; And

Data processing module, be used for handling respectively to sent one or more data flow, and with described one or more distribution of flows to each the layer, described a plurality of transmitter modules are given in described layer reallocation, wherein, described one or more data flow is fixing respectively uses one deck emission, and the power that the one deck at least under the described precoding pattern is assigned to is more than the assigned power of other layer except that this layer.

30. data sending device according to claim 29 is characterized in that, described one deck at least is to receive higher one or more layers of the value of signal interference ratio, and described other layer except that this layer is all layers that the value of reception signal interference ratio is lower than described one deck at least.

31. data sending device according to claim 29 is characterized in that, described one deck at least is less one or more layers of sequence number, and described other layer except that this layer is sequence number all layers bigger than the sequence number of described one deck at least.

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