Decision Region Optimization and Metric-Based Compensation of Memoryless Nonlinearity for APSK Systems
Decision Region Optimization and Metric-Based Compensation of Memoryless Nonlinearity for APSK Systems
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DOI：
10.1109/tbc.2017.2781128
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发表时间：
2018-01
影响因子：
4.5
通讯作者：
Daiki Yoda;H. Ochiai
中科院分区：
文献类型：
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作者：
Daiki Yoda;H. Ochiai
我们研究了无记忆非线性对卫星通信标准中采用的未编码和编码单载波幅度相移键控系统的误码率性能的影响。对于未编码的系统，我们开发的决策区域，导致最佳的错误率性能，以及次优的方法，计算复杂性较低。对于编码系统，我们引入了新的度量，这些度量与非线性失真的统计特性相匹配，主要关注失真分量的高斯近似，以降低计算复杂度。我们所提出的方法的有效性证明了数值结果的广义互信息以及错误率性能。
We investigate the effect of memoryless nonlinearity on the error rate performance of both uncoded and coded single-carrier amplitude phase-shift keying systems adopted in the satellite communications standards. For the uncoded system, we develop decision regions that lead to optimal error rate performance as well as suboptimal approaches with less computational complexity. For the coded system, we introduce new metrics that are matched to the statistical characteristics of nonlinear distortion, primarily focusing on the Gaussian approximation of distortion components for reduced computational complexity. The effectiveness of our proposed approaches is demonstrated by numerical results in terms of the generalized mutual information as well as error rate performance.