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
German Aerospace Center (DLR)
Gianluigi Liva
German Aerospace Center (DLR)
Johan Östman
Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems
Giuseppe Durisi
Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems
SCC 2019 - 12th International ITG Conference on Systems, Communications and Coding
2019 IEEE Conference on Systems, Communications and Coding
Rostock, Germany,
Rostock, Germany,
SWIFT : short-packet wireless information theory
Swedish Research Council (VR), 2017-01-01 -- 2020-12-31.
Theory and practice for optimum spectral efficiency for ad-hoc wireless networks with strict requirements on latency and reliability
Swedish Research Council (VR), 2015-01-01 -- 2018-12-31.
Subject Categories
Computer Engineering
Telecommunications
Signal Processing
Areas of Advance
Information and Communication Technology