On A Use Of Golay Sequences For Asynchronous DS CDMA Applications
On A Use Of Golay Sequences For Asynchronous DS CDMA Applications
复制标题
论Golay序列在异步DS CDMA应用中的应用
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
T. Wysocki
中科院分区：
文献类型：
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作者：
J. Seberry;B. Wysocki;T. Wysocki
Golay互补序列，通常称为Golay对，其特征在于它们的非周期自相关函数之和等于零，除了零移位。由于这一特性，Golay互补序列可用于构造Hadamard矩阵，该矩阵定义了长度不必为2的幂的DS CDMA系统的正交扩频序列集。本文从异步DS-CDMA应用的角度出发，对由Golay互补序列导出的几组扩频序列进行了评价。然后，我们修改这些序列集，以提高其相关性能的异步操作和模拟多用户DS CDMA系统利用修改后的序列。
Golay complementary sequences, often referred to as Golay pairs, are characterized by the property that the sum of their aperiodic autocorrelation functions equals to zero, except for the zero shift. Because of this property, Golay complementary sequences can be utilized to construct Hadamard matrices defining sets of orthogonal spreading sequences for DS CDMA systems of the lengths not necessary being a power of 2. In the paper, we present an evaluation, from the viewpoint of asynchronous DS CDMA applications, of some sets of spreading sequences derived from Golay complementary sequences. We then modify those sets of sequences to enhance their correlation properties for asynchronous operation and simulate a multiuser DS CDMA system utilizing the modified sequences.