Switchable-rate quasi-cyclic low-density parity-check codes for internet protocol over high-frequency systems

Heravi, B.M. and Kariyawasam, S.R. and Vongas, G. and Honary, B. (2011) Switchable-rate quasi-cyclic low-density parity-check codes for internet protocol over high-frequency systems. IET Communications, 5 (4). pp. 505-511. ISSN 1751-8628

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Abstract

A switchable-rate quasi-cyclic low-density parity-check (QC-LDPC) coding scheme has been proposed for integration within the legacy and next-generation high-frequency internet protocol (HF-IP) systems. The novelty in this work is based upon using a class of switchable-rate short-block-length ( lt;;1500 bits) QC-LDPC codes for the HF fading channel modelled by the ITU-R F.1487 for all latitudes and conditions. The QC-LDPC codes are constructed using a switchable-rate approach based on finite fields which provides the ability to switch among three rates to combat varying channel conditions using a single encoder/decoder structure. The proposed structure enables low-complexity implementation of the low-density parity-check encoder/decoder for use within the existing data link (DL) layer of the standardisation agreement (STANAG) 5066 profile. The performance of the proposed scheme has been evaluated comprehensively for all the HF channel conditions and latitudes. A comparison between the proposed and the current coding scheme in HF-IP systems (based on convolutional coding) shows an improvement in error-rate performance.

Item Type:
Journal Article
Journal or Publication Title:
IET Communications
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qa75
Subjects:
ID Code:
57990
Deposited By:
Deposited On:
30 Aug 2012 09:13
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:06