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Performance Analysis of Adaptive Modulation in MC-CDMA Systems |
Zeng Guo-yan; Zheng Kan; Huang Lin; Wang Wen-bo |
Center of Wireless Communication, Beijing University of Posts and Communications, Beijing 100876, China |
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Abstract Adaptive modulation can improve the system performance with high spectral efficiency. In this paper, a combining scheme of MC-CDMA and adaptive modulation is proposed in order to achieve the frequency diversity and the spectral efficiency without loss of much BER performance. The performance of the MC-CDMA system with adaptive modulation is analyzed. Simulation results also indicate the combining schemes and the channel environment will affect the efficiency of adaptive modulation algorithm in MC-CDMA systems.
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Received: 15 August 2003
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