认知无线电NC-OFDM系统中基于压缩感知的信道估计新方法
Compressive sensing based channel estimation for NC-OFDM systems in cognitive radio context
- 通信学报 2011年32卷第11期 页码：85-94
- 作者机构：
1. 南京邮电大学 通信与信息工程学院，江苏 南京210003
2. 东南大学 移动通信国家重点实验室，江苏 南京210096
- 作者简介：
[ "何雪云（1978-），女，安徽铜陵人，南京邮电大学讲师、在读博士生，主要研究方向为宽带无线通信理论与技术。" ]
[ "宋荣方（1964-），男，江苏武进人，南京邮电大学教授、博士生导师，主要研究方向为宽带无线通信理论与技术。" ]
[ "周克琴（1975-），女，四川成都人，南京邮电大学讲师、在读博士生，主要研究方向为宽带无线通信理论与技术。" ]
- 基金信息：国家自然科学基金资助项目;The National Natural Science Foundation of China(60972041);国家自然科学基金资助项目;The National Natural Science Foundation of China(60872104);江苏省高校自然科学基础研究计划重大项目;The Natural Science Fundamental Research Program of Jiangsu Universities(08KJD510001);教育部博士点基金资助项目;PH.D.Program Foundation of Ministry of Education(200802930004);东南大学移动通信国家重点实验室开放课题;Open Research Foundation of National Mobile Communications Research Laboratory,Southeast University(N200809);国家科技重大专项;National Special Project(2009ZX03003-006);国家重点基础研究发展计划(“973”计划)基金资助项目;The National Basic Research Program of China (973 Program)(2007CB310607);江苏省高校研究生创新计划项目;Graduate Innovation Program(CXZZ11_0385)
DOI：1000-436X(2011)11-0085-10
中图分类号： TN911.23-
网络首发：2011-11，
纸质出版：2011-11-25
- 稿件说明：
移动端阅览
何雪云, 宋荣方, 周克琴. 认知无线电NC-OFDM系统中基于压缩感知的信道估计新方法[J]. 通信学报, 2011,32(11):85-94.
Xue-yun HE, Rong-fang SONG, Ke-qin ZHOU. Compressive sensing based channel estimation for NC-OFDM systems in cognitive radio context[J]. Journal on Communications, 2011, 32(11): 85-94.
何雪云, 宋荣方, 周克琴. 认知无线电NC-OFDM系统中基于压缩感知的信道估计新方法[J]. 通信学报, 2011,32(11):85-94. DOI： 1000-436X(2011)11-0085-10.
Xue-yun HE, Rong-fang SONG, Ke-qin ZHOU. Compressive sensing based channel estimation for NC-OFDM systems in cognitive radio context[J]. Journal on Communications, 2011, 32(11): 85-94. DOI： 1000-436X(2011)11-0085-10.
摘要
提出了一种基于压缩感知（CS
compressive sensing）理论的不连续子载波正交频分复用（NC-OFDM
non-contiguous orthogonal frequency division multiplexing）系统信道估计新方法，全面研究了认知无线电NC-OFDM系统CS信道估计的理论框架、导频图案的设计、信道估计算法，并依据CS测量矩阵设计理论提出了测量矩阵互相关最小化的导频图案优化准则。仿真结果表明，同已有的NC-OFDM系统信道估计方法相比，CS信道估计能够在多种禁用子载波场景下，使用较少导频获得很好的信道估计性能。
Abstract
A new channel estimation based on compressive sensing(CS)in non-contiguous orthogonal frequency division multiplexing(NC-OFDM)system was proposed.As for NC-OFDM systems in cognitive radio context
the infrastructure of CS-based channel estimation
the design of pilot patterns and the algorithm of channel estimation were explored.Especially
a criterion of optimizing pilot pattern in the CS-based channel estimation was proposed by minimizing the mutual coherence of the measurement matrix in CS theory.Simulations show that
under many patterns of deactivated subcarriers
CS-based channel estimation obtains much better performance than existing NC-OFDM channel estimation methods in terms of the mean square error of the channel estimate as well as the bit error rate of the system.
关键词
Keywords
references
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