Code Acquisition in Asynchronous DS/CDMA Systems
スポンサーリンク
概要
- 論文の詳細を見る
Synchronized users signals are subtracted from received signal at the base station of a direct sequence code division multiple access (DS/CDMA) system to aid code acquisition of new users. Expressions for expectation and variance of the correlator output corresponding to a synchronization chip and otherwise are derived for the asynchronous environment. A novel detector based on a posteriori probability threshold rule is proposed for code acquisition. Computer simulations show significant performance improvements over conventional code acquisition methods. The technique is also applicable for signals modulated by Markov codes and computer simulations show superiority of Markov codes over independent and identically distributed (i.i.d.) codes.
- 社団法人電子情報通信学会の論文
- 2005-03-11
著者
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Khan Tahir
Department Of Computer Science And Communication Engineering Kyushu University
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Eshima Nobuoki
Department of Medical Information Analysis, Oita Medical University
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Eshima Nobuoki
Department Of Medical Information Analysis Oita University
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Eshima Nobuoki
Department Of Human Environmental And Social Medicine Oita Medical University
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KOHDA Tohru
Department of Computer Science and Communication Engineering,Kyushu University
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Jitsumatsu Yutaka
Department of Computer Science and Communication Engineering, Kyushu University
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Jitsumatsu Yutaka
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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