A chip-based multiuser detector for the downlink of a DS-CDMA system using a folded state-transition trellis.

The maximum-likelihood sequence estimation (MLSE) multiuser detector has very good performance but at the expense of high computational complexity. The Viterbi algorithm is employed to implement the MLSE in the asynchronous uplink. In this scheme, the various bit-combinations are taken to be the dif...

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Pubblicato in:	IEEE Transactions on communications 49, 7 (2001).
Autore principale:	Sim, H.K
Natura:	Articolo
Lingua:	inglese
Soggetti:	DS-CDMA system. MLSE multiuser detector. Viterbi algorithm. Active users. Asynchronous uplink. Bit-combinations. Chip-based multiuser detector. Computational complexity. Decoding trellis. Downlink. Folded state-transition trellis. Maximum-likelihood sequence estimation multiuser detector. Multipath channel. Performance. Power-equality. Transition trellis diagram. Transmitted chip value.