BER Performance of DS-CDMA with Frequency-domain Equalization using Pilot-assisted Channel Estimation
نویسندگان
چکیده
Abstract In direct sequence code division multiple access (DS-CDMA), frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can be applied to exploit the channel frequency-selectivity and therefore much improved bit error rate (BER) performance than using the conventional rake combining. MMSE-FDE requires accurate frequency-domain channel estimation. In this paper, decision-feedback pilot-assisted frequency-domain channel estimation suitable for FDE is proposed. The achievable BER performance using the proposed channel estimation is evaluated by computer simulation and compared with that of conventional rake combining. Keyword DS-CDMA, frequency-domain equalization, pilot-assisted channel estimation
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