Performance of optimum wavelet for DS-CDMA chip waveform over multi-path Rayleigh fading channels
Ertan Ozturk, Baris Sahin
article (Uluslararası, Hakemli) | Yazar(lar): Ertan Ozturk, Baris Sahin | Yıl: 2007 | Dergi/Kurum: INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS | İndeks: WOS.SCI | DOI: 10.1002/dac.863 | Anahtar Kelimeler: DS-CDMA, chip waveform, optimum wavelet, multi-path Rayleigh fading channel, asynchronous channel — Özet: In thi
In this paper, the probability of error (P-e) expression of asynchronous direct sequence-code division multiple access (DS-CDMA) signals using band-limited chip waveforms is derived over multi-path Rayleigh fading channels. In receiver, a matched filter-based rake receiver in conjunction with maximum ratio combiner (MRC) is considered. Numerical values for the P-e are calculated for various chip waveforms including an optimum wavelet waveform. Analytical results are verified by conducting simulations. Results show that the optimum wavelet-based scheme outperforms time-limited raised cosine, half sine, rectangular and band-limited square-root raised cosine chip waveform-based schemes in terms of the P, and the capacity defined as the number of users per Hertz for a same P-e level. Copyright (C) 2006 John Wiley & Sons, Ltd.