JOINT CARRIER PHASE ESTIMATION AND SYMBOL DECODING OF TRELLIS CODES

被引：0
|
作者：
KALEH, GK
机构：
[1] Ecole Nationale Superieure des Telecommunications, Paris, 75 634, 46, rue Barrault
来源：
EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS | 1993年 / 4卷 / 02期
关键词：
D O I：
10.1002/ett.4460040211
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
We use the Expectation-Maximization algorithm to deduce an iterative method for carrier phase estimation and symbol decoding. The method applies to all trellis-based codes. Carrier phase offset and noise variance estimation is based on the maximum likelihood criterion. The Markovian properties of the encoder state sequence enable us to calculate the required likelihoods using a forward-backward algorithm. Given the phase estimate. the calculated likelihood functions can easily give optimum decisions on information symbols which minimize the symbol error probability. Simulation results which show rapid convergence are given.
引用
收藏
页码：157 / 163
页数：7
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