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arXiv 1802.05973cs.ITmath.IT
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概率振幅整形的信息率和误差指数

Information Rates and Error Exponents for Probabilistic Amplitude Shaping

Rana Ali Amjad

摘要:

概率幅度整形(PAS)是一种编码调制方案,其中编码器是分布匹配器与系统前向纠错(FEC)码的级联。为了降低计算复杂性,解码器可以被选择为失配FEC解码器和解匹配器的级联。本文研究了PAS的理论极限。对经典的联合信源-信道编码(JSCC)设置进行了修改,以包括系统FEC和失配FEC解码器。在每一步的错误指数和可实现的速率为相应的设置推导。

英文摘要:

Probabilistic Amplitude Shaping (PAS) is a coded-modulation scheme in which the encoder is a concatenation of a distribution matcher with a systematic Forward Error Correction (FEC) code. For reduced computational complexity the decoder can be chosen as a concatenation of a mismatched FEC decoder and dematcher. This work studies the theoretic limits of PAS. The classical joint source-channel coding (JSCC) setup is modified to include systematic FEC and the mismatched FEC decoder. At each step error exponents and achievable rates for the corresponding setup are derived.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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