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Channel equalization method and device

A channel equalization and channel technology, applied in baseband system components, transmitter/receiver shaping network, etc., can solve the problems of poor anti-noise ability and inability to obtain gain, and achieve good performance

Inactive Publication Date: 2013-12-11
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Usually, the MMSE-BLE process in MMSE-IC is not optimized, so the output result cannot obtain additional gain, the anti-noise ability is poor, and further improvement is needed

Method used

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  • Channel equalization method and device
  • Channel equalization method and device

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Embodiment Construction

[0034] Such as figure 1 As shown, the channel equalization method provided by the present invention comprises the following steps:

[0035] Step 100, performing channel matching on the received signal to obtain a signal to be processed;

[0036] Step 200, performing minimum mean square error-block decision feedback equalization on the signal to be processed to obtain a series of detection results;

[0037] Step 300, extracting the last output of the series of detection results as a detected symbol;

[0038] Step 400, taking the detected symbol as interference, and canceling it from the received signal to generate a new received signal.

[0039] The invention optimizes the MMSE-IC channel equalization method by changing the MMSE-BLE process in the MMSE-IC into the MMSE-BDFE process, and obtains an equalization method combining minimum mean square error, interference elimination and block decision feedback. Since the last output solved in the MMSE-BDFE process has additional ...

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Abstract

The invention discloses a channel equalization method and a channel equalization device. The channel equalization method comprises the following steps of: performing channel matching on a received signal to acquire a signal to be processed; performing minimum mean squared error-block decision feedback equalization processing on the signal to be processed to acquire a series of detection results; extracting the last one of the series of detection results as a detected symbol; and eliminating the detected symbol as interference from the received signal to generate a new received signal. Through the method and the device, the MMSE-IC channel equalization method can be optimized and additional gain can be acquired.

Description

technical field [0001] The invention belongs to the technical field of joint detection of communication systems, and in particular relates to an optimized implementation method of the MMSE-IC (Minimum Mean Square Error-Interference Cancellation, minimum mean square error-interference cancellation method) channel equalization method. Background technique [0002] In the prior art, a burst mode (GSM, TDD-CDMA, etc.) communication system is also called a block transmission system. When the signal bandwidth is greater than the coherent bandwidth of the channel, Inter Symbol Interference (ISI, Inter Symbol Interference) will occur. Such a channel is called an ISI channel or a frequency selective fading channel. When broadband communication becomes more and more popular, the ISI problem in communication becomes more and more prominent, which is an important factor restricting the performance of receivers. The general approach to countering the ISI problem is equalization. The bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04L25/02
Inventor 周化雨汪开龙汪赟
Owner TCL CORPORATION