LDPC codes for interference channels in the primary decodes cognitive regime
Date
2019Source Title
IEEE Wireless Communications Letters
Print ISSN
2162-2337
Publisher
Institute of Electrical and Electronics Engineers Inc.
Volume
8
Issue
4
Pages
1187 - 1190
Language
English
Type
ArticleItem Usage Stats
161
views
views
170
downloads
downloads
Abstract
We investigate cognitive interference channels (CICs), a variant of two-user ICs in which one of the transmitters (called the cognitive transmitter) has non-causal knowledge of the other's (private user's) message. Prompted by the information theoretical results, we design an explicit coding scheme for CIC in the primary decodes cognitive regime. We present a novel joint decoder and design low-density parity-check codes for this set-up. Simulation results demonstrate that the proposed joint decoder and the designed codes outperform the conventional maximum ratio combining type decoder and the point-to-point optimal codes, respectively.
Keywords
Low-density parity-check codesCognitive interference channel
Code design
Iterative joint decoding