Title :
Sequence adaptation for cellular systems
Author :
Leung, Kin Kwong ; Lok, T.M. ; Sung, Chi Wan
Author_Institution :
Dept. of Inf. Eng., Chinese Univ. of Hong Kong, China
Abstract :
We consider the sequence adaptation problem for multi-cell asynchronous CDMA systems. We propose a new interference measure that reflects the actual correlation between users. It is shown that Nash equilibria exist in such system. We also propose a distributed sequence adaptation scheme that provides us a significant gain over the existing systems. It is also remarkable that in this macro-diversity system, the MMSE receivers for the optimal sequences are not equal to the matched filters in general.
Keywords :
cellular radio; code division multiple access; distributed algorithms; diversity reception; least mean squares methods; matched filters; radiofrequency interference; MMSE receivers; Nash equilibria; cellular systems; code division multiple access; distributed sequence adaptation scheme; interference measure; macrodiversity system; multicell asynchronous CDMA systems; Base stations; Code division multiplexing; Detectors; Distributed algorithms; Information technology; Interference suppression; Matched filters; Multiaccess communication; Multiuser detection; Nash equilibrium;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207189
