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首页> 外文会议>IEEE Vehicular Technology Conference >Performance analysis of a 2-stage groupwise successive interference cancellation scheme with groupwise power disparities in DS/CDMA systems
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Performance analysis of a 2-stage groupwise successive interference cancellation scheme with groupwise power disparities in DS/CDMA systems

机译：DS / CDMA系统集团功率差异的2级GroupWise连续干扰取消方案的性能分析

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摘要

In this paper, we propose a 2-stage GSIC scheme considering a stits BER performance in single arict delay constraint and analyze nd multi-cell DS/CDMA systems. Groupwise power disparity is applied in order to enhance the BER performance. We compare the BER performance, complexity and delay of the proposed 2-stage GSIC scheme with those of both conventional detection scheme and SIC scheme. Analysis results show that the capacity increase obtained by both 2-stage GSIC scheme and SIC scheme is smaller in a multi-cell model than in a single cell model. BER performance enhancement by the proposed 2-stage GSIC scheme is appropriate regarding the minimal increase in cancellation delay and computational complexity. For example, in a multi-cell DS/CDMA system, proposed 2-stage GSIC scheme can enhance the user capacity of about 21% at BER = 10{sup}(-2) with the twice of the cancellation delay and complexity compared with the conventional detection scheme, while the pure SIC scheme can enhance the user capacity of 33% with K and K{sup}2 times increase in delay and complexity, respectively, where K is the number of concurrent users.
机译：在本文中，我们提出了一种考虑到单次arix延迟约束和分析Nd多单元DS / CDMA系统中的刺痛性能的2级GSIC方案。扩展功率差距适用，以提高BER性能。我们将建议的2级GSIC方案的BER性能，复杂性和延迟与传统检测方案和SIC方案进行比较。分析结果表明，通过2级GSIC方案和SIC方案获得的容量增加在多电池模型中比单个细胞模型更小。建议的2级GSIC计划的BER性能提升是适当的，关于取消延迟和计算复杂性的最小增加。例如，在多电池DS / CDMA系统中，提出的2级GSIC方案可以在BER = 10 {SUP}（ - 2）中增强大约21％的用户容量，其中与取消延迟和复杂性相比两次传统的检测方案，而纯SIC方案可以分别提高k和k {sup}的用户容量为33％，分别增加延迟和复杂性的2倍，其中k是并发用户的数量。

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