A novel code acquisition algorithm and its application to Markov spreading codes
A novel code acquisition algorithm and its application to Markov spreading codes
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DOI：
10.1109/iscas.2005.1465022
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发表时间：
2005-05
期刊：
影响因子：
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通讯作者：
T. A. Khan;N. Eshima;Y. Jitsumatsu;T. Kohda
中科院分区：
文献类型：
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作者：
T. A. Khan;N. Eshima;Y. Jitsumatsu;T. Kohda
在单用户情况下，在异步模式下，在误码率（BER）和同步性能方面，马尔可夫码优于i.i.d.码。在多用户检测（MUD）情况下，它们的误码率性能也优于i.i.d码。本文提出了一种基于扩频（SS）码的统计特性的简单码采集方案，有效地提高了异步MUD系统中马尔可夫码的性能。因此，在MUD情况下，马尔可夫代码也是SS代码的有力候选。此外，所提出的码采集方案明显优于传统的码采集方案。
In terms of bit error rate (BER) and synchronization performances, Markovian codes are superior to i.i.d. codes in asynchronous mode, for the single-user case. Their BER performance is better than i.i.d. codes also in the case of multiuser detection (MUD). The paper shows that a simple code acquisition scheme based on the statistical properties of spread spectrum (SS) codes efficiently makes the performance of Markov codes superior to i.i.d. codes in asynchronous MUD systems. Hence, Markov codes are a strong candidate for being SS codes in the MUD case as well. Furthermore, the proposed code acquisition scheme significantly outperforms conventional schemes.