Grouping decoding method based on partial interference elimination and receiver

A technology of interference elimination and packet decoding, applied in the field of network communication, can solve the problem of high implementation complexity of packet decoding, and achieve the effect of reducing implementation complexity

Active Publication Date: 2010-10-20
HUAWEI TECH CO LTD
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Problems solved by technology

[0014] The inventor finds that there are at least the following problems in the above-mentioned prior art: due to and The dimensionality of is higher, so that the computed and The dimension of is also high, so that the matrix with high dimension is used in the maximum likelihood criterion for operation, and finally leads to the high complexity of block decoding

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  • Grouping decoding method based on partial interference elimination and receiver
  • Grouping decoding method based on partial interference elimination and receiver
  • Grouping decoding method based on partial interference elimination and receiver

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Embodiment 2

[0070] Embodiment 2 is an improvement to the basic PIC block decoding method in the prior art. The complexity of the basic PIC block decoding method in the prior art is shown in Table 1:

[0071] Table 1

[0072]

[0073] N in Table 1 is the number of groups divided into groups for the transmitted signal, m is the product of the number of transmission time slots of the space-time code and the number of receiving antennas, n is the number of transmission symbols of the space-time code, that is, the length of the space-time code, K is the number of symbols in the group.

[0074] Complex multiplications (Complex multiplications), complex additions (Complex additions), modular squares (Absolute-squares), real additions (Real additions), complex divisions of real numbers (CR divisions) and square roots (Square-roots) in Table 1 are all measures of complexity index of degrees.

[0075] The complexity of the PIC-based block decoding method of Embodiment 2 is shown in Table 2:

...

Embodiment 3

[0097] Embodiment three is an improvement to the PIC-SIC block decoding method in the prior art, and the complexity of the PIC-SIC block decoding method in the prior art is as shown in Table 3:

[0098] table 3

[0099]

[0100] N in Table 3 is the number of groups divided into groups for the transmitted signal, m is the product of the number of transmission time slots of the space-time code and the number of receiving antennas, n is the number of transmission symbols of the space-time code, that is, the length of the space-time code, K is the number of symbols in the group.

[0101] The complexity of the PIC-based block decoding method of Embodiment 3 is shown in Table 4:

[0102] Table 4

[0103]

[0104] N in Table 4 is the number of groups divided for the transmitted signal, m is the product of the number of transmission time slots of the space-time code and the number of receiving antennas, n is the number of transmission symbols of the space-time code, that is, t...

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Abstract

The embodiment of the invention discloses a technical scheme of a grouping decoding method based on partial interference elimination and a receiver. The grouping decoding method based on partial interference elimination comprises the following steps: carrying out triangular decomposition on a correlation matrix of a channel, inverting the decomposed matrix, extracting a submatrix related to a group of signals from the inverted matrix aiming at each group of which the transmitting signals are divided into, acquiring a receipt signal vector and an equivalent channel matrix corresponding to the group after between-group interference is eliminated according to the matrix after orthogonal decomposition of the submatrix, and detecting the transmission vector of the group of the signals by utilizing a multiple input and multiple output detection method according to the receipt signal vector and the equivalent channel matrix corresponding to the group after the between-group interference is eliminated. The technical scheme lowers the realization complexity of grouping decoding and saves the processing resources of the receiver.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a packet decoding method and receiver based on partial interference cancellation. Background technique [0002] The realization principle of the Partial Interference Cancellation (PIC) packet decoding method is as follows: [0003] Set the space-time code duration as t and the number of transmitting antennas as n T and the number of receiving antennas is n R , the MIMO (Multiple Input Multiple Output) system model can be written as the following equivalent form: [0004] y=Gx+w; [0005] where y is the original received signal vector and G is the equivalent channel matrix and x is the transmitted signal vector and x∈A n , A is the constellation symbol set, w is Gaussian white noise and C is the field of complex numbers. [0006] If the sequence number set of n information symbols is I={0, 1, 2, ..., n-1}, the transmitted signal is divided into N groups, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/00
CPCH04L1/0047H04L1/0052
Inventor 李斌罗毅沈晖夏香根
Owner HUAWEI TECH CO LTD
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