WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
APCC'09 Proceedings of the 15th Asia-Pacific conference on Communications
Novel switched interleaving techniques with limited feedback for DS-CDMA systems
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Performance analysis of spread spectrum protocols with adaptive spreading
IEEE Transactions on Wireless Communications
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Time-varying multipath fading associated with the wireless link limits the capacity of a wireless system. In order to adapt to this adverse radio environment efficiently, we investigate the use of a pilot-aided fade-resistant transmission scheme for the uplink of a chip-interleaved code-division multiple-access (CDMA) system. We analyze the tradeoff between the number of diversity branches and the channel estimation error. We derive the optimum ratio of pilot signal energy to information signal energy. Our numerical study indicates that the proposed system is capable of outperforming the conventional CDMA system depending on the transmitter energy and channel condition.