Simplified zero-forcing equalization filter calculating method

A technology that simplifies calculations and zero-forcing equalization is applied to communication between multiple stations, electrical components, transmission systems, etc., and can solve problems such as signal-to-noise ratio deterioration, interference, and channel response estimation errors in signal processing
CN1885727AActive Publication Date: 2006-12-27WUHAN HONGXIN TELECOMM TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN HONGXIN TELECOMM TECH CO LTD
Publication Date
2006-12-27

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Abstract

The related two short-cut calculation methods for ZF-BLE in TD-SCDMA system comprise: with the first method, calculating simplified system matrix B and the correlation matrix BHB, then the inverse matrix as (BHB)-1 to take MAI balance directly to data MF for the estimated data d; with the second method, using simplified matrix B to obtain are and its inverse are-1, and applying partitioned matrix a, b, c and d for ISI and MAI balance to the data MF, adding to obtain final d.
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Description

technical field

[0001] The invention relates to a simplified calculation method of a zero-forcing equalization filter (ZF-BLE) used in two communication receivers, in particular to two improved ZF-BLE fast calculation methods in a TD-SCDMA receiver or other communication receivers. Background technique

[0002] In a communication system, the receiver needs to filter the received signal, filter out noise interference, and recover the transmitted data. A zero-forcing equalization filter (ZF-BLE) is an alternative. The TD-SCDMA system uses ZF-BLE. In order to realize the ZF-BLE process, the receiver has undergone the following processing:

[0003] Separating the data part and the training sequence part of the received signal, and selecting the training sequence part for multi-user joint channel estimation.

[0004] Using the joint channel response of multiple users, the system matrix is ​​constructed. The system matrix reflects the process experienced by the multi-user sourc...

Claims

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