BAMUD Features Demonstration by System View
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Direct-sequence code-division multiple access (DS-CDMA) is a frequently used wireless technology in DS-CDMA communications. The conventional DS-CDMA detector follows a single-user detection strategy in which each user is detected separately without regard for the other users. The better strategy is multi-user detection (MUD), where information about multiple users is used to improve detection of each individual user. This paper presents an adaptive multi-user detector converging (for any initialization) to the minimum mean square error (MMSE) detector without requiring training sequences. This blind multi-user detector (BAMUD) requires no more knowledge than does the conventional single-user detector. The structure of adaptive blind detector is simulated by the system design tool SystemView. The aim focus is to verify theoretical knowledge of BAMUD structure using hardware-oriented PC-based model in SystemView.
KeywordsMulti-user detection, CDMA systems, multi-access interference (MAI), suboptimum multi-user receivers, near-far effect, blind adaptive MUD
Document typePeer reviewed
Document versionFinal PDF
SourceRadioengineering. 2004, vol. 13, č. 3, s. 47-52. ISSN 1210-2512
- 2004/3