Probabilistically Shaped Multi-Level Coding with Polar Codes for Fading Channels

Probabilistically Shaped Multi-Level Coding with Polar Codes for Fading Channels

A probabilistic shaping method for multi-level coding (MLC) is presented, where the transmitted symbols are forced to have a shaped non-uniform distribution. It is shown that shaping only a single bit-level suffices to compensate for most of the shaping loss on the fading channels. A polar code base...

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Hauptverfasser: İşcan, Onurcan, Böhnke, Ronald, Xu, Wen
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Mathematics - Information Theory
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Böhnke, Ronald
Xu, Wen
description A probabilistic shaping method for multi-level coding (MLC) is presented, where the transmitted symbols are forced to have a shaped non-uniform distribution. It is shown that shaping only a single bit-level suffices to compensate for most of the shaping loss on the fading channels. A polar code based implementation of the proposed scheme is presented, where shaping is performed by using a precoder at the transmitter without increasing the decoding complexity. Simulation results show that performance improvements can be obtained compared to BICM- and MLC-based polar coding without shaping on Rayleigh fading channels.
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title Probabilistically Shaped Multi-Level Coding with Polar Codes for Fading Channels
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