Title :
Low complexity joint MLSE receiver in the presence of CCI
Author :
Chen, Jiunn-Tsair ; Liang, Jen-Wei ; Tsai, Huan-Shnng ; Chen, Young-Kai
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
Abstract :
In this paper, we address the problem of receiving a digitally modulated signal in the presence of another identically modulated co-channel interference (CCI) signal. We propose a joint MLSE algorithm that uses a dynamic channel description (J-MLSE/DCD). This algorithm deals with CCI more effectively while keeping the overall complexity low. Our approach is to adaptively truncate the channels of both the signal and the interference according to their individual power, thereby greatly reducing the complexity. Analytic BER lower bounds for the J-MLSE algorithms in the time-varying specular multipath Rayleigh-fading channels are derived. Simulation results for the GMSK signals used in the GSM system are presented
Keywords :
Rayleigh channels; cellular radio; cochannel interference; computational complexity; digital radio; error statistics; fading; maximum likelihood estimation; minimum shift keying; multipath channels; radio receivers; time-varying channels; BER lower bounds; CCI signal; GMSK signals; GSM system; J-MLSE/DCD; bit error rate; co-channel interference; digitally modulated signal; dynamic channel description; joint MLSE algorithm; low complexity joint MLSE receiver; time-varying specular multipath Rayleigh-fading channels; Antenna arrays; Channel capacity; Diversity reception; Equalizers; Frequency; GSM; Maximum likelihood estimation; Radiofrequency interference; Receiving antennas; Signal processing;
Conference_Titel :
Communications, 1998. ICC 98. Conference Record. 1998 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-4788-9
DOI :
10.1109/ICC.1998.685101
