Fang Xin, Xu Xiao-dong, Gao Xi-ji, You Xiao-hu. Adaptive Modulation in FDD Communications over a Fading Channel[J]. Journal of Electronics & Information Technology, 2005, 27(8): 1278-1281.
Citation:
Fang Xin, Xu Xiao-dong, Gao Xi-ji, You Xiao-hu. Adaptive Modulation in FDD Communications over a Fading Channel[J]. Journal of Electronics & Information Technology, 2005, 27(8): 1278-1281.
Fang Xin, Xu Xiao-dong, Gao Xi-ji, You Xiao-hu. Adaptive Modulation in FDD Communications over a Fading Channel[J]. Journal of Electronics & Information Technology, 2005, 27(8): 1278-1281.
Citation:
Fang Xin, Xu Xiao-dong, Gao Xi-ji, You Xiao-hu. Adaptive Modulation in FDD Communications over a Fading Channel[J]. Journal of Electronics & Information Technology, 2005, 27(8): 1278-1281.
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.
Webb W T, Steele R. Variable rate QAM for mobile radio[J].IEEE Trans. on Commun.1995, 43(7):2223-[2]Ahn C J, Sasase L. The effects of modulation combination, target BER, Doppler frequency, and adaptation interval, on the performance of adaptive OFDM in broadband mobile channel[J].IEEE Trans. on Consumer Electronics.2002, 48(1):167-174[3]Saarinen I S, Mammela A, Jsrvensivu P, et al.. Power control in feedback communications over a fading channel[J].IEEE Trans. on Veh. Technol.2001, 50(2):1231-1239[4]3G TS 25.213 v3.3.0 (2000-06) Spreading and modulation(FDD).[5]Jakes W C. Microwave Mobile Communications[M]. New York:Wiley-Interscience, 1974:46-52.
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