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首页> 外文期刊>IEEE Transactions on Communications >Extended Reed-Solomon Codes for Optical CDMA
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Extended Reed-Solomon Codes for Optical CDMA

机译:光学CDMA的扩展Reed-Solomon码

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摘要

In this paper, the extended Reed-Solomon codes are modified to construct a new family of 2-D codes for asynchronous optical code-division multiple access (O-CDMA). In addition of having expanded and asymptotically optimal cardinality, these 2-D asynchronous optical codes can be partitioned into multiple tree structures of code subsets, in which code cardinality is a function of the (periodic) cross-correlation value assigned to the subset. The performance of these 2-D optical codes is analyzed and compared with that of the multilevel prime codes. Our results show that the unique partition property of the new optical codes supports a trade-off between code cardinality and performance for meeting different system requirements, such as user capacity and throughput. In addition, the multiple tree structures of the new codes potentially support applications that require rapid switching of many codewords, such as in O-CDMA-network gateway or in strategic environments where code obscurity is essential.
机译:在本文中,对扩展的Reed-Solomon码进行了修改,以构造用于异步光码分多址(O-CDMA)的2D码新系列。除了具有扩展的渐近最优基数之外,还可以将这些2-D异步光学代码划分为代码子集的多个树结构,其中代码基数是分配给子集的(周期性)互相关值的函数。分析了这些二维光学代码的性能,并将其与多级素数代码的性能进行了比较。我们的结果表明,新光代码的独特分区属性支持在代码基数和性能之间进行折衷,以满足不同的系统要求,例如用户容量和吞吐量。另外,新代码的多树结构可能支持需要快速切换许多代码字的应用程序,例如在O-CDMA网络网关中或在代码模糊性必不可少的战略环境中。

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