Chip Interleaving for DS-CDMA with Frequency Domain Equalization in a Frequency Selective Rayleigh Fading Channel
نویسندگان
چکیده
Abstract DS-CDMA with frequency domain minimum mean square error (MMSE) equalization can provide much better performance than that with rake combining in a frequency selective fading channel. Chip interleaving is a form of channel interleaving that improves the DS-CDMA performance by converting the channel into a highly time selective channel. When frequency domain equalization is used, the frequency selectivity of the channel is thoroughly exploited. In this paper we apply chip interleaving to DS-CDMA with frequency domain MMSE equalization to see if the performance can be further improved. It is found that chip interleaving improves the performance for all channel conditions. In addition, chip interleaving is beneficial in the presence of turbo coding and antenna diversity as well.
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