02090489

a

02090489 Kim, Youngseok Hwang, Seunghoon Cho, Dongkyoon Whang, Keumchan Performance of antenna arrays with reverse-link synchronous transmission technique for DS-CDMA system in multipath fading channels. Chang, Whie (ed.), Advanced internet services and applications. First international workshop, AISA 2002, Seoul, Korea, August 1--2, 2002. Proceedings. Berlin: Springer (ISBN 3-540-43968-4/pbk). Lect. Notes Comput. Sci. 2402, 21-31 (2002). 2002 Berlin: Springer EN

http://link.springer.de/link/service/series/0558/bibs/2402/24020021.htm

Summary: This paper introduces an improved antenna arrays (AA) in which the reverse-link synchronous transmission technique (RLSTT) is employed to improve the estimation of covariance matrices at Beamformer-RAKE. By beamforming, the desired user's signal is enhanced and the co-channel interference (CCI) from other directions is reduced. For in-beam multiple access interference (MAI) reduction, the RLSTT is used in the first RAKE finger. The RLSTT is a robust approach that takes into account the fact that the in-beam MAI statistics at the beamformer may be less valid and lets it be more reliable. Theoretical analysis demonstrates that an increase in system capacity as a function of the number of antennas and the number of interferences.