Polar Codes over Fading Channels with Power and Delay Constraints

Deekshith, PK and Sahasranand, KR (2017) Polar Codes over Fading Channels with Power and Delay Constraints. In: INTERNATIONAL SYMPOSIUM ON WIRELESS COMMUNICATION SYSTEMS (ISWCS), AUG 28-31, 2017, Bologna, ITALY, pp. 37-42.

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Abstract

The inherent nature of polar codes being channel specific makes it difficult to use them in a setting where the communication channel changes with time. In particular, to be able to use polar codes in a wireless scenario, varying attenuation due to fading needs to be mitigated. To the best of our knowledge, there has been no comprehensive work in this direction thus far. In this work, a practical scheme involving channel inversion with the knowledge of the channel state at the transmitter, is proposed. An additional practical constraint on the permissible average and peak power is imposed, which in turn makes the channel equivalent to an additive white Gaussian noise (AWGN) channel cascaded with an erasure channel. It is shown that the constructed polar code could be made to achieve the symmetric capacity of this channel. Further, a means to compute the optimal design rate of the polar code for a given power constraint is also discussed.

Item Type:	Conference Paper
Series.:	International Symposium on Wireless Communication Systems
Publisher:	10.1109/ISWCS.2017.8108142
Additional Information:	International Symposium on Wireless Communication Systems (ISWCS), Bologna, ITALY, AUG 28-31, 2017 Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	12 Jan 2018 06:26
Last Modified:	12 Jan 2018 06:26
URI:	http://eprints.iisc.ac.in/id/eprint/58784

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