Title :
A MUSIC-like blind co-channel signals separation algorithm and its performance analysis
Author :
Li, Hui ; Wang, Wenjie ; Yin, Qinye
Author_Institution :
Inst. of Inf. Eng., Xi´´an Jiaotong Univ., Xi´´an, China
Abstract :
Based on the finite alphabet property of the communication signals and the subspace theory, a blind source separation algorithm for co-channel signals is presented. A comparison between the proposed method and MUSIC algorithm is made. Although their application backgrounds are different, their principles are similar. On the viewpoint of MUSIC algorithm, a new explanation for the proposed approach is given. Based on the subspace perturbation theory, the bit error rate (BER) performance analysis is also presented. Some key parameters, such as channel vector correlation coefficient, signal vector correlation coefficient, number of antennas and length of code vectors, are discussed. Finally, simulation results confirm our performance analysis.
Keywords :
blind source separation; correlation methods; error statistics; perturbation theory; signal classification; MUSIC algorithm; MUSIC-like blind cochannel signals separation algorithm; bit error rate; channel vector correlation coefficient; performance analysis; subspace perturbation theory; vector correlation coefficient; Analytical models; Bit error rate; Blind source separation; Data models; Fading; Multiple signal classification; Null space; Performance analysis; Sensor arrays; Source separation;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5117888
