Efficient algorithms for burst error recovery using FFT and other transform kernels

被引:53
作者
Marvasti, F [1 ]
Hasan, M [1 ]
Echhart, M [1 ]
Talebi, S [1 ]
机构
[1] Univ London Kings Coll, Ctr Telecom Res, Dept Elect Engn, London WC2R 2LS, England
关键词
burst error recovery; error correction codes; Galois fields for real numbers; nonuniform sampling; Reed-Solomon codes;
D O I
10.1109/78.752604
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
In this paper, we will show that the problem of signal reconstruction from missing samples can be handled by using reconstruction algorithms similar to the Reed-Solomon (RS) decoding techniques. Usually, the RS algorithm is used for error detection and correction of samples in finite fields, For the case of missing samples of a speech signal, we work with samples in the field of real or complex numbers, and we can use FFT or some new transforms in the reconstruction algorithm. DSP implementation and simulation results show that the proposed methods are better than the ones previously published in terms of the quality of recovered speech signal for a given complexity, The burst error recovery method using the FFT kernel is sensitive to quantization and additive noise like the other techniques. However, other proposed transform kernels are very robust in correcting bursts of errors with the presence of quantization and additive noise.
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页码:1065 / 1075
页数:11
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