Interference rejection combining method and device supporting transmit diversity

A technology of interference suppression and transmit diversity, applied in the directions of space transmit diversity, diversity/multi-antenna system, modulated carrier system, etc., can solve the problem of complex receiver processing and so on
CN104683282AActive Publication Date: 2015-06-03SANECHIPS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SANECHIPS TECH CO LTD
Publication Date
2015-06-03

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Abstract

The invention discloses an interference rejection combining method and device which support a transmit diversity. The method comprises the following steps: generating an NxN-dimensional interference and noise covariance matrix pair corresponding to a subcarrier by received signals of N (N is greater than or equal to 3) receiving antennas under the transmit diversity at a cell reference signal (CRS) resource position; performing Cholescy decomposing and upper triangular matrix inversion on the NxN-dimensional interference and noise covariance matrix to obtain an NxN-dimensional block matrix; expanding the NxN-dimensional block matrix into a 2Nx2N-dimensional noise whitening matrix; whitening the received signals and a channel estimation value according to the noise whitening matrix, and obtaining a processing result of minimum mean square error-interference rejection combining according to the received signals and the channel estimation value which are whitened. Further, the interference rejection combining device supporting the transmit diversity is disclosed.
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Description

technical field

[0001] The present invention relates to wireless communication technology, in particular to an interference suppression combining method and device supporting transmit diversity. Background technique

[0002] In the downlink transmission of the 3GPP Enhanced Long Term Evolution (LTE-A, LTE-Advanced) system, both the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH) are configured with a transmit diversity transmission mode, and the system can obtain Diversity gain to improve reception performance.

[0003] The main physical layer processing flow for transmit diversity in LTE-A system is as follows: figure 1 As shown, the information bits pass through the encoder to form a codeword (Codeword) and then add a mask (Scrambling), then pass through a modulation mapper (Modulation mapper) to form a transmission symbol, and then pass through a layer mapper (Layer mapper) to precoding (Precoding) ), the precoded transmission ...

Claims

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