| A Practical Adaptive TuCM Scheme for Rayleigh Flat Fading Channels |
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| 作者姓名： | 伍守豪 宋文涛 |
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| 作者单位： | Dept. of Electronics Eng.，Shanghai Jiaotong Univ.，Dept. of Electronics Eng.，Shanghai Jiaotong Univ. Shanghai 200030，China，Shanghai 200030，China |
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| 基金项目： | National Natural Science Foundation ofChina (60 0 72 0 2 8)，High Technology Research and Developm entProgram (863 ) of China (2 0 0 1AA12 10 3 1) |
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| 摘 要： | IntroductionAs stated in Ref.1 ],if the channel state isknown atthe transmitter,then channel capacity isachieved by adapting the transmit power,data rateand coding scheme relative to this fade state.Based on those results,an uncoded adaptive modu-lation was proposed2 ] .This adaptive modulation is1 7d B more power efficientthan non- adaptive mod-ulation in fading.Combining trellis coded modula-tion ( TCM) with adaptive modulation,an adaptivecoded modulation was studied3 ] .The results sh…
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| 关 键 词： | 瑞利平板衰减信道 自适应编码调制 turbo编码调制 通信编码 |
A Practical Adaptive TuCM Scheme for Rayleigh Flat Fading Channels |
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| WU Shou-hao,SONG Wen-tao.A Practical Adaptive TuCM Scheme for Rayleigh Flat Fading Channels[J].Journal of Shanghai Jiaotong university,2004,9(1):73-77. |
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| Authors: | WU Shou-hao SONG Wen-tao |
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| Abstract: | A practical adaptive turbo coded modulation (TuCM) scheme was proposed and its adaptive method was described. With some hardware considerations, a suboptimal optimization algorithm that the number of fading regions is variable was put forward. Furthermore, the cutoff fade depth of power adaptation was modified to reduce the interruption probability. The results show that the proposed adaptive TuCM comes within 3 dB of Rayleigh fading channel capacity, and exhibits about 3 dB power gain relative to the conventional adaptive trellis-coded modulation (TCM), and is easy to realize by hardware. |
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| Keywords: | adaptive coded modulation turbo coded modulation (TuCM) spectral efficiency |
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