Title :
Joint multipath diversity combining and MLSE equalization (RAKE-MLSE receiver) for WCDMA systems
Author :
Tantikovit, S. ; Sheikh, A.U.H.
Author_Institution :
Dept. of Electron. Eng. & Inf. Eng., Hong Kong Polytech., Kowloon, China
Abstract :
We present an intersymbol interference (ISI) model to the interpath interference (IPI) that occurs in a RAKE receiver when low spreading ratios are used in a DS-CDMA system. Based on the equivalent model, we propose a new RAKE receiver structure that effectively overcomes the IPI problem. The performance of the proposed RAKE-MLSE receiver is evaluated by computer simulation. Results obtained show that significant performance gains over the conventional RAKE receiver can be obtained
Keywords :
broadband networks; code division multiple access; diversity reception; equalisers; maximum likelihood sequence estimation; multipath channels; multiuser channels; radio networks; radio receivers; radiofrequency interference; spread spectrum communication; DS-SS systems; ISI model; MLSE equalization; RAKE-MLSE receiver; WCDMA systems; computer simulation; direct-sequence spread spectrum; equivalent model; high speed data transmission; interpath interference; intersymbol interference; joint multipath diversity combining; low spreading ratios; performance; Binary phase shift keying; Diversity reception; Fading; Intersymbol interference; Maximum likelihood estimation; Multiaccess communication; Multipath channels; Multiple access interference; RAKE receivers; Random sequences;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851494
