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- Title
Analysis of Asynchronous Band-Limited DS-CDMA with MMSE Multiuser Detector over Generalized- k Fading Channels.
- Authors
Mehdi, Haider; Kah Chan Teh; Li, Kwok H.
- Abstract
In this paper, we investigate bit-error-rate (BER) performance of a minimum mean-squared error (MMSE) multiuser receiver for asynchronous band-limited direct- sequence code-division multiple-access (DS-CDMA) systems. We focus on the BER performance in the presence of multitone jamming (MTJ) over frequency-selective multipath fading channels. We consider the generalized- K fading model in our analysis, as it can model a large spectrum of fading-channel characteristics. We also analyze the effects of band- limited pulse shape on the BER performance of the system. Multipath diversity based on the maximal-ratio combining (MRC) scheme is employed to combat fading effects. Our analytical expressions are valid for arbitrary diversity levels and fading parameters. Spectrum raised cosine (SRC) and Beaulieu–Tan–Damen (BTD) pulse shapes are employed for numerical analysis. Numerical results show that in the presence of MTJ and under various channel conditions, the MMSE based receiver gives better BER performance than the one without it. Moreover, the system with BTD pulses outperforms the one with SRC pulses.
- Subjects
ASYNCHRONOUS transfer mode; CODE division multiple access; RADIO transmitter fading; NUMERICAL analysis; MATHEMATICAL analysis
- Publication
Wireless Personal Communications, 2010, Vol 53, Issue 4, p581
- ISSN
0929-6212
- Publication type
Article
- DOI
10.1007/s11277-009-9704-5