基于逐分量软干扰删除的迭代线性检测算法

J4 ›› 2015, Vol. 37 ›› Issue (07): 1239-1244.

基于逐分量软干扰删除的迭代线性检测算法

李秀丽1，张益农1，周进1，戴晓明2

（1.北京联合大学自动化学院，北京 100101；2.电信科学技术研究院无线移动通信国家重点实验室，北京 100876）

收稿日期:2014-04-30 修回日期:2014-09-09 出版日期:2015-07-25 发布日期:2015-07-25
基金资助:
北京联合大学人才强校项目（BPHR2012C06）;北京市教委科技计划面上项目（KM201111417011）;北京市属高等学校人才强教计划资助项目(PHR201008348）

An iterative linear setection algorithm based on
componentlevel soft interference cancellation

LI Xiuli1，ZHANG Yinong1，ZHOU Jin1，DAI Xiaoming2

(1.School of Automation,Beijing Union University,Beijing 100101;
2.Key Laboratory of Wireless Mobile Communications,
China Academy of Telecommunications Technology,Beijing 100876,China)

Received:2014-04-30 Revised:2014-09-09 Online:2015-07-25 Published:2015-07-25

摘要/Abstract

摘要：

提出了一种新型基于调制符号的分量进行干扰删除和线性最小均方误差滤波的软输入软输出检测算法，并采用软输入软输出的多入多出MIMO检测器和信道编码串行级联的迭代检测译码IDD结构。该算法充分利用正交调制符号同相分量和正交分量的独立衰落特性，达到检测中更加准确的软干扰删除。外信息转移EXIT图表明该算法比传统的逐符号软删除算法具有更低的临界信噪比。数值仿真也验证了提出的基于调制符号的分量删除的线性检测算法比采用调制符号级的删除具有更优的误码性能，并且仍然具有低复杂度的特性。

关键词: 逐分量软干扰删除（CLSC） , 多入多出（MIMO）, 外信息转移图（EXIT）, 迭代检测译码（IDD）

Abstract:

We propose an iterative detection and decoding (IDD) algorithm based on componentlevel soft cancellation (CLSC) and linear minimum meansquared error (LMMSE) filtering for turbo coded multiple input multiple output (MIMO) multiplexing systems in this work.By exploiting the independence between the inphase and quadraturephase branch,more accurate soft interference cancellation is realized.Extrinsic information transfer (EXIT) characteristics of the IDD system shows that the proposal has faster convergence speed than the conventional one.Numerical results further validate that the CLSCLMMSE algorithm achieves a noticeable bit error rate (BER) performance than symbollevel soft cancelation (SLSC) based LMMSE,and maintains its low complexity characteristic.

Key words: component level soft interference cancellation（CLSC）；multiple input multiple output（MIMO）；extrinsic information transfer（EXIT）；iterative detection and decoding(IDD)

李秀丽1，张益农1，周进1，戴晓明2. 基于逐分量软干扰删除的迭代线性检测算法[J]. J4, 2015, 37(07): 1239-1244.

LI Xiuli1，ZHANG Yinong1，ZHOU Jin1，DAI Xiaoming2. An iterative linear setection algorithm based on
componentlevel soft interference cancellation [J]. J4, 2015, 37(07): 1239-1244.