Comparison and Optimization of Enumerative Coding Techniques for Amplitude Shaping
IEEE Communications Letters(2021)
摘要
The energy efficiency of enumerative coding algorithms is investigated for amplitude shaping in the context of binary transmission. First, a simple method for the calculation of the amplitude distribution is derived for enumerative sphere shaping (ESS). For ultra-short blocklengths, ESS—which orders sequences lexicographically—is shown to be less energy-efficient than algorithms that use energy-ba...
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关键词
Encoding,Indexes,Signal to noise ratio,Optical transmitters,OFDM,Forward error correction,Adaptive optics
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