On the performance of O3BPSK LDD with diversity combining techniques over fading channels

Chia-Hsin Cheng, Jen-Yung Lin, Jyh-Horng Wen, Chao-Kai Wen
2008 Computer Communications  
Zheng and Barton developed a convenient signaling scheme (orthogonal on-off BPSK (O 3 BPSK)) with a simple one-shot linear decorrelating detector (LDD) for near-far resistant detection in asynchronous DS/CDMA systems. This paper studies the performance of the O 3 BPSK LDD system over a frequency-nonselective and slowly fading channel. Three types of channel model are considered, namely Rayleigh fading, Nakagami-m fading, and Ricean fading. The analytical results show that channel fading causes
more » ... significant degradation in the performance of the O 3 BPSK LDD receiver. Nevertheless, the receiver still demonstrates a better near-far resistant property than a conventional CDMA receiver over fading channels. This study also analyzes the effect of two well-known diversity combining techniques on the O 3 BPSK LDD performance over Rayleigh fading channels. The results indicate that diversity combining techniques significantly improve the performance of the O 3 BPSK LDD scheme over fading channels.
doi:10.1016/j.comcom.2007.12.002 fatcat:o3ml6mwtu5fwbms7akbznmculm