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电子与信息学报 2005
Adaptive Modulation in FDD Communications over a Fading Channel
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Abstract:
In this paper adaptive modulation in Frequency Division Duplexing(FDD) communications over a fading channel is studied and packet structure and structure of adaptive modulation are proposed. Further, influence of multiplication of Doppler frequency and packet length is analyzed. Iterative modulation scheme is proposed which adjusts modulation scheme according to different multiplication. Simulation results show that in different multiplication region, different mode can get maximum spectrum efficiency and spectrum efficiency decreases with the increase of multiplication.
