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Turbo码;Turbo码网格编码调制;平坦Rayleigh衰落信道;集分割, Open Access Library" />

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Research on the Performance of Turbo Trellis Coded Modulation in Image Transmission over Flat Rayleigh Fading Channels
衰落信道下Turbo网格编码调制在图像传输中的性能研究

Keywords: Turbo codes,Turbo Trellis Coded Modulation(TTCM),Flat Rayleigh fading channels" target="_blank">channels')">Flat Rayleigh fading channels&searchField=keyword">Flat Rayleigh fading channels&prev_q=channels')">Flat Rayleigh fading channels" target="_blank">channels')">Flat Rayleigh fading channels,Set partitioning
Turbo码,Turbo码网格编码调制,平坦Rayleigh衰落信道,集分割

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Abstract:

In this paper, based on the characteristics of Turbo codes and Trellis Coded Modulation (TCM), an improved method Turbo Trellis Coded Modulation (TTCM) is pre-sented and analyzed over flat Rayleigh fading channels in image transmission with two typical mapping strategies. The selection of different mapping strategies of TTCM in Rayleigh fad-ing channels for image transmission is analyzed and investigated. Furthermore, taking 8PSK modulation of TTCM as the example, two different mapping strategies are compared. Com-puter simulation results and PSNR that can evaluate the quality of the transmitted image are given.

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