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Method for detecting and decoding a signal in a mimo communication system

A communication system and a technology for decoding signals, which are applied in the field of wireless communication systems, can solve the problems of increasing the overall processing complexity and increasing the processing complexity of the receiving stage, etc.

Inactive Publication Date: 2006-11-01
SAMSUNG ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods create new problems, such as increased processing complexity at the receiving stage
This complexity increases according to the modulation level and the number of antennas
The currently proposed method is based on an iterative process between detection and decoding without significantly increasing the overall processing complexity

Method used

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  • Method for detecting and decoding a signal in a mimo communication system
  • Method for detecting and decoding a signal in a mimo communication system
  • Method for detecting and decoding a signal in a mimo communication system

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Embodiment Construction

[0037] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0038] figure 1 The structure of the transmitter in the coding layered spatio-temporal OFDM system to which the signal detection and decoding method of the present invention is applied is illustrated.

[0039] exist figure 1 Among them, the OFDM transmitter has: a first serial-to-parallel (S / P) converter 110 for converting an input bit stream into a plurality of parallel signal streams; connected signal processor unit. The signal processing unit includes: encoders 121-1~121-n, used to encode the signal stream; interleavers 123-1~123-n, used to interleave the signals output from the encoder 121; bit / symbol mapper 125-1~125-n, used to perform bit / symbol mapping processing on the signal output from the interleaver 123; second S / P converters 127-1~127-n, used to map the slave bit / symbol The symbol stream output by the device 125 is converted into a plurality of ...

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Abstract

A method for detecting and decoding a signal in a communication system based on Multiple-Input Multiple-Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM). A signal is received through multiple receive antennas. A decision error occurring at a symbol decision time is considered and a symbol is detected from transmitted symbols. Original data transmitted from the detected symbol is recovered. The performance of a coded bit system can be significantly improved using a new equalization matrix G considering a decision error.

Description

technical field [0001] The present invention relates generally to wireless communication systems, and more particularly to methods for detecting and decoding signals in multiple-input multiple-output (MIMO) communication systems. Background technique [0002] A multiple-input multiple-output (MIMO) communication system uses multiple transmit antennas and multiple receive antennas to transmit and receive data. A MIMO channel formed by Nt transmit antennas and Nr receive antennas is divided into multiple independent spatial sub-channels. Because a MIMO system employs multiple transmit / receive antennas, it outperforms a single-input single-out (SISO) antenna system in terms of channel capacity. Traditionally, MIMO systems suffer from frequency selective fading leading to inter-symbol interference (ISI). ISI causes every symbol within the received signal to distort other consecutive symbols. This distortion reduces the detection accuracy of received symbols and is a significa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/06H04L27/26
CPCH04L1/0656H04L27/2647H04L2025/03414H04L27/265H04L27/2628H04L1/0071H04L27/01H04L27/2697
Inventor 李东俊李寅圭安玟荣金宗汉李欣哲
Owner SAMSUNG ELECTRONICS CO LTD