Title :
Co-channel interference cancellation for CDMA over multipath fading channels
Author :
Hui, L.C. ; Letaief, K. Ben
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, Hong Kong
Abstract :
We consider the performance of direct-sequence (DS) based code division multiple-access (CDMA) over a wireless communications environment that is characterized by multipath Rayleigh fading channels. Specifically, we propose and analyze a multiuser detection strategy, which employs a cascade of co-channel interference cancellation, for the demodulation of asynchronous DS spread-spectrum multiple-access signals. The numerical results show that the proposed multistage receiver, which alleviates the detrimental effects of the near-far problem, can significantly improve the system performance
Keywords :
Rayleigh channels; cochannel interference; code division multiple access; demodulation; fading; interference suppression; multipath channels; pseudonoise codes; radio receivers; signal detection; spread spectrum communication; CDMA; Rayleigh fading channel; asynchronous DS spread-spectrum multiple-access signals; co-channel interference cancellation; demodulation; multipath fading channels; multistage receiver; multiuser detection; near-far problem; performance; system performance; wireless communications environment; Demodulation; Fading; Interchannel interference; Interference cancellation; Multiaccess communication; Multiuser detection; Rayleigh channels; Signal analysis; Spread spectrum communication; Wireless communication;
Conference_Titel :
Universal Personal Communications. 1995. Record., 1995 Fourth IEEE International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-7803-2955-4
DOI :
10.1109/ICUPC.1995.496876
