SPECTRAL SCULPTING FOR OFDM-BASED COGNITIVE RADIO SYSTEMS BY SVD PRECODING SCHEME

摘要：

To suppress the interference to Licensed Users (LUs) in orthogonal frequency division multiplexing (OFDM)-based Cognitive Radios (CR) systems, a novel spectral precoding scheme is proposed. The precoder matrix is obtained by the singular value decomposition (SVD) algorithm. Analysis and simulations show that the proposed scheme can significantly suppress the power interference by tens of decibels in contrast to the uncoded schemes at a little cost of precoding efficiency. Meanwhile, the peak-to-average-power-ratio (PAPR) is expected to be unaffected and the bit-error-rate (BER) performance over multipath fading channel is improved.

关键词： OFDM cognitive radio precoding spectral shaping

作者: Kun Zhang Chenglin Zhao Yun Liu

作者单位: Wireless Network Laboratory, Beijing University of Posts and Telecommunications, Beijing 100876, Chi Communication Metrology Center,Ministry of Industry & Information, Beijing 100876, China

会议类型: 国际会议

会议名称: 2011 International Conference on Communications Technology and Applications(2011年通信技术与应用国际会议 ICCTA 2011)

会议地点: 北京

会议语种:英文

页码: 1-5

在线出版日期: 2011-10-14（万方平台首次上网日期，不代表论文的发表时间）