Title :
On the influence of the channel impulsional response estimation on the performance of a linear interference canceller for a DS/CDMA system
Author :
Díaz, P. ; Agustí, R.
Author_Institution :
Dept. of Signal Theory & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
In a code division multiple access (CDMA) mobile radio communication system, interference from other users is one of the most critical drawbacks due to the lack of perfect orthogonality between user access codes. So far, practical systems have used power control to overcome fading and near/far effects. Another approach which also results in an important improvement of the capacity is the use of interference cancellers. A simple linear interference cancellation scheme for coherent BPSK modulation is proposed and analyzed under Rayleigh multipath fading, and in particular, the influence of the channel impulsive response estimation on the performance of the cancellation scheme has been assessed
Keywords :
Rayleigh channels; code division multiple access; fading; interference suppression; land mobile radio; multipath channels; parameter estimation; phase shift keying; pseudonoise codes; radiofrequency interference; spread spectrum communication; transient response; DS/CDMA system; Rayleigh multipath fading; channel impulse response estimation; code division multiple access; coherent BPSK modulation; fading; linear interference cancellation; linear interference canceller; mobile radio communication system; near/far effects; performance; power control; user access codes; Amplitude estimation; Binary phase shift keying; Demodulation; Fading; Interference cancellation; Mobile communication; Multiaccess communication; Parameter estimation; Performance analysis; Rayleigh channels;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1994. Wireless Networks - Catching the Mobile Future., 5th IEEE International Symposium on
Conference_Location :
The Hague
Print_ISBN :
90-5199-193-2
DOI :
10.1109/WNCMF.1994.529146
