哈尔滨工程大学学报2011，Vol.32Issue(4)：513-518,6.DOI:10.3969/j.issn.1006-7043.2011.04.021
MIMO-OFDM系统迭代球形译码检测算法
An iterative sphere decoding detection algorithm in a MIMO-OFDM system
张驰 1郭黎利1
作者信息
- 1. 哈尔滨工程大学,信息与通信工程学院,黑龙江,哈尔滨,150001
- 折叠
摘要
Abstract
In a MIMO-OFDM system, the coding and the diversity gains can be obtained easily by using the BICMID method. However, the increase in complexity is especially significant for higher order constellations and transmitting antennas. The complexity of detection will increase exponentially with the numbers of constellations and transmitting antennas. In the following research, in order to reduce the complexity due to the iteration, the decoding process was replaced with MAX-LOG-MAP to approximate the original MAP decoding performance, and posteriori information was applied from the decoder to modify a list of candidate points in the constellation. The simulation result shows that, compared to the conventional algorithm, the iterative sphere decoding detection algorithm can obviously reduce the complexity of the iterative decoding algorithm, the spherical radius of the proposed algorithm can adaptively change with the channel parameters and the size of the modulation order; it can efficiently reduce the complexity of decoding with only a slight loss in performance.关键词
比特交织编码调制/多输入多输出/正交频分复用/球形译码Key words
bit interleaved coded/ Multiple in multiple out/ orthogonal frequency division multplexing/ sphere decoding分类
信息技术与安全科学引用本文复制引用
张驰,郭黎利..MIMO-OFDM系统迭代球形译码检测算法[J].哈尔滨工程大学学报,2011,32(4):513-518,6.
