Performance Comparison of Symbol- and Bit-Interleaving of Block Codes over GF(2m) on Fading Channels
نویسندگان
چکیده
We analytically compare the word error probabilities of imperfectly symboland bit-interleaved block codes over GF(2m) on fading channels. We employ an approximate fading channel model of a two-state Markov chain, using statistics of the fadeand interfadedurations. The analytical method is based on a technique developed in [2]. Expressions are derived for two decoding strategies; independent bounded-distance decoding and error-forecasting decoding. Numerical results are presented for (16, 8, 9) Reed-Solomon codes over GF(24) on two typical fading channels. It is indicated that symbolinterleaving significantly outperforms bit-interleaving.
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