THE PROBABILITY DENSITY OF INTERSYMBOL INTERFERENCE FOR TRELLIS-CODED MODULATION

被引：1
|
作者：
CARLISLE, CJ [1 ]
TAYLOR, DP [1 ]
KENNEDY, WK [1 ]
SHAFI, M [1 ]
机构：
[1] UNIV CANTERBURY,DEPT ELECT & ELECTR ENGN,CANTERBURY,NEW ZEALAND
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 1995年 / 43卷 / 01期
关键词：
D O I：
10.1109/26.385943
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Knowledge of the probability density function (pdf) of intersymbol interference (ISI) can be used in the computation of system error probabilities and to help identify the cause of the errors. Exact computation of the probability density is only practicable in a few special cases. Several algorithms exist for computing approximate pdf's of ISI but these only work with certain signal constellations and transmitted symbols that are mutually independent or coded by partial response. This paper considers an algorithm for the computation of ISI pdf's for trellis-coded modulation with general 1- and 2-D constellations. The results suggest that symbol dependencies introduced into the transmitted signal by symmetric trellis-codes have negligible effect on the pdf of the ISI. Although the ideas presented are general in nature, examples are given for ISI pdf's on a line-of-sight radio channel.
引用
收藏
页码：44 / 51
页数：8
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