Low-Complexity Joint Channel Estimation and List Decoding of Short Codes
Paper in proceedings, 2019

A pilot-assisted transmission (PAT) scheme is proposed for short blocklengths, where the pilots are used only to derive an initial channel estimate for the list construction step. The final decision of the message is obtained by applying a non-coherent decoding metric to the codewords composing the list. This allows one to use very few pilots, thus reducing the channel estimation overhead. The method is applied to anordered statistics decoder for communication over a Rayleigh block-fading channel. Gains of up to 1.2 dB as compared to traditional PAT schemes are demonstrated for short codes with QPSK signaling. The approach can be generalized to other list decoders, e.g., to list decoding of polar codes.

Author

Mustafa Cemil Coskun

Gianluigi Liva

Johan Östman

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Giuseppe Durisi

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

2019 IEEE Conference on Systems, Communications and Coding
Rostock, Germany,

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Subject Categories

Computer Engineering

Telecommunications

Signal Processing

Areas of Advance

Information and Communication Technology

More information

Created

2/27/2019