Improved Compressed Sensing-based UWB Channel Estimation
In this paper, an improved scheme of channel estimation for ultrawideband (UWB) communication system is presented based on the theory of compressive sensing (CS). The key idea is to construct the sensing matrix adaptively using the information of the energy distribution of the received pilot signal in each frame and then use the method of distributed compressed sensing (DCS) to get the channel estimate. The orthogonal matching pursuit (OMP) is then modified to improve the channel estimation performance. Computer simulation shows that the estimation error of our approach is reduced significantly at low levels of SNR as compared to an already existing CS channel estimation method for UWB systems, while the number of measurements remains the same.
compressive sensing ultrawideband adaptive sensing matrix distributed compressed sensing
Chunyu Jian Xinrong Ye Wei-Ping Zhu
Institute of Signal Processing and Transmission, NanjingUniversity of Posts and Telecommunications Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications Institute of Signal Processing and Transmission, NanjingUniversity of Posts and TelecommunicationsDe
国际会议
南京
英文
1-5
2011-11-09（万方平台首次上网日期，不代表论文的发表时间）