標題: ROBUST INTERFERENCE CHANNEL TRANSMISSION USING SPARSITY ENHANCED MISMATCH MODEL
作者: Chang, Chieh-Yao
Fung, Carrson C.
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Interference avoidance;cognitive radio;MIMO;precoder;imperfect channels
公開日期: 2012
摘要: Herein a maximin-SNR robust precoder design is proposed for MIMO cognitive radio transmission when inaccurate channel estimate is present. The proposed scheme exploits the structural property of the statistical transmit covariance matrix to increase the degree of freedom in the mismatch model related to the channel matrix. Simulation results show that the proposed scheme outperforms previously proposed methods in terms of SER under certain conditions. The performance gain is obtained at the cost of increased interference level toward the primary user, but without violating the average interference power constraint. Analytical and simulation results are given to support the efficacy of the proposed scheme. Furthermore, analysis is carried out to differentiate the performance given by the lower bound method and S-Procedure method.
URI: http://hdl.handle.net/11536/20345
ISBN: 978-1-4673-0183-1
期刊: 2012 IEEE STATISTICAL SIGNAL PROCESSING WORKSHOP (SSP)
起始頁: 836
結束頁: 839
Appears in Collections:Conferences Paper