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Transmitter and receiver optimization in MC-CDMA systems

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2 Author(s)
T. M. Lok ; Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Shatin, Hong Kong ; T. F. Wong

In this paper, we consider transmitter and receiver optimization in multicarrier code division multiple access (MC CDMA) systems. Receiver optimization is performed in a decentralized manner while transmitter optimization is performed through centralized control of the power of different carriers. Results show that when the number of users is smaller than or equal to the number of carriers, each transmitter should concentrate its power on a different carrier which does not suffer deep fading. The MC-CDMA system then tends to a frequency division multiple access system with near optimal frequency assignment. When the number of users gets large, each user tends to choose more than one carriers, which do not suffer deep fading, while interference suppression is performed across the chosen carriers by the corresponding receiver

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Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE

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