Optimal design of 16-APSK constellation for simplified demapping algorithm

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作者：
National Space Science Center, Chinese Academy of Sciences, No. 1, Nanertiao, Zhongguancun, Haidian District [1 ]
Beijing, China
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来源：
ICIC Express Lett. | / 6卷 / 1643-1650期
关键词：
Phase shift - Phase shift keying - Optimal systems;
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摘要：
This paper investigates the optimal design of amplitude phase shift keying (APSK) constellation for a new simplified demapping algorithm. According to the new simplified demapping algorithm, a new object function for optimization is presented. Simulation shows that: the simplified demapping algorithm decreases the demapping complexity with 1dB loss of signal-to-noise ratio (SNR) at high SNR; with the optimized hard decision threshold the performance improves about 0.26dB at SNR that we are interested in. © 2015 ICIC International.
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