Reduction of MAI in Asynchronous DS/CDMA Systems Using Post-Filter(<Special Section>Nonlinear Theory and its Applications)
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概要
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We propose a post-filter (digital filter applied after the correlator) to reduce multiple-access interference (MAI) in the correlator output in asynchronous communications. Optimum filter coefficients are derived for Markov and I.I.d. codes. It is shown that post-filter is not needed for Markov case. Variance of MAI is reduced in I.I.d. codes and it becomes equal to that of Markov codes; thus, both will have the same bit error rate (BER) performance. This post-filter reduces level of MAI in the correlator output for Gold codes as well.
- 社団法人電子情報通信学会の論文
- 2004-09-01
著者
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Jitsumatsu Yutaka
Department Of Computer Science And Communication Engineering Kyushu University
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Abbas Khan
Department Of Computer Science And Communication Engineering Kyushu University
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Kohda Tohru
Department Of Computer Science And Communication Engineering Kyushu University
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Kohda Tohru
Department Of Computer Science And Communication Engineering Faculty Of Information Science And Elec
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Abbas Khan
Department of Computer Science and Communication Engineering, Kyushu University
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