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The Research on Technologies of Trellis Coded Modulation and Phase Equalization Applied for Data Transmission

Author: ChenYanXia
Tutor: JinLiJun
School: Xi'an University of Electronic Science and Technology
Course: Communication and Information System
Keywords: Continuous Phase Modulation Trellis Coded Modulation All-pass Digital Filter Group Delay
CLC: TN919.3
Type: Master's thesis
Year: 2006
Downloads: 24
Quote: 0
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Abstract


Trellis coding techniques can achieve improved error probability performance with no increase in bandwidth and energy over the uncoded case. After the CPM system model being briefly recalled, the combination of trellis encoder and CPM modulator was studied. The coding optimization approach based on CPM decomposition method was verified by analysis and simulation.The error probability performance of the CPM system was terribly affected by nonlinear-phase c haracteristic o f a c hannel, s o a m ethod o f p hase e qualization w as represented in the paper. Based on the relationship of the group delay function and the cepstral coefficients of a stable all-pass filter, a group delay characteristic desired can be realized approximately through designing such a all-pass filter.And a method of using FIR filters to approximate to IIR filters was presented.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Communicate > Data communication > Data transmission technology
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