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Iterative decoder and iterative decoding method for Golden code

An iterative decoding and decoder technology, which is applied in the direction of error correction/error detection by combining multiple code structures, which can solve the problems of receiver iterative performance impact and high receiver complexity, and achieves reduction of lattice dimension and complexity. The effect of reducing the degree of complexity and reducing the complexity of the algorithm

Inactive Publication Date: 2011-11-09
CHONGQING UNIV
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Problems solved by technology

Its main disadvantage is that the iterative performance of the receiver is affected by the search radius R, and the complexity of the receiver is high

Method used

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  • Iterative decoder and iterative decoding method for Golden code
  • Iterative decoder and iterative decoding method for Golden code
  • Iterative decoder and iterative decoding method for Golden code

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Embodiment Construction

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

[0038] The iterative decoder and the iterative decoding method of the Golden code provided by the present invention will be described in detail below by taking the Golden code in the 2×2 MIMO system as an example with reference to the accompanying drawings.

[0039] Such as figure 2 As shown, the iterative decoder of the Golden code provided by the present invention includes a channel estimator 1, a scalar Gaussian approximation detector 2 and a channel decoder

[0040] The channel estimator 1 receives the information matrix Y and estimates the fading coefficient matrix H, converts the received signal model, and finally outputs the received signal matrix Y' and the rotation matrix G, specifically including the following steps:

[0041] 1) Perform channel estimation on the received signal, obtain a 4×4 channel transmission matrix, and e...

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Abstract

The invention provides an iterative decoder and an iterative decoding method of a Golden code, which adopts a scalar Gaussian approximation (SGA) method to obtain the symbol soft information and provides the soft information to a channel decoder for iterative decoding, and is especially applicable to a 2 multiplied by 2MIMO system, wherein, the iterative decoder of the Golden code comprises: a channel estimator, which carries out channel estimation to a received signal, and obtains the received signal matrix and rotation matrix required by a SGA detector, the SGA detector, which carries out SGA decoding to a first information sequence by using the priori information of the first information sequence, and obtains the likelihood information of the first information sequence as a first external information, and the channel decoder, which receives the first external information, obtains the priori information of the first information sequence, outputs the priori information to the SGA detector, and ultimately outputs a best estimated value sequence.

Description

technical field [0001] The present invention relates to the technical fields of space-time coding and decoders, in particular to an iterative decoder and an iterative decoding method. Background technique [0002] Space-time coding technology is an effective method to improve the performance of wireless link which has been extensively researched in the field of multiple-input multiple-output antenna (MIMO) in wireless communication. Since MIMO can provide diversity gain and multiplexing gain at the same time, the design of space-time coding with full diversity and full rate has become a hot issue in the field of space-time research. Golden code is a discrete linear algebra code based on lattice idea, which is suitable for 2×2 MIMO system. Because of its characteristics of full diversity and full rate, and can provide the largest coding gain, the Golden code has been adopted by the WiMax standard and will be widely used in future wireless systems. [0003] Due to the proble...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/29
Inventor 吴玉成郭伟李国权陈丽容李雯静李妮邓慧平徐琳祁美娟
Owner CHONGQING UNIV
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