LDPC Codes for Interference Channels in the Primary Decodes Cognitive Regime

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 codi...

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Bibliographic Details
Published in:IEEE wireless communications letters 2019-08, Vol.8 (4), p.1187-1190
Main Authors: Shakiba-Herfeh, Mahdi, Tanc, A. Korhan, Duman, Tolga M.
Format: Article
Language:English
Subjects:
Binary system
Channels
code design
Codes
cognitive interference channel
Decoding
Encoding
Error correcting codes
Interference
Interference channels
iterative joint decoding
Low-density parity-check codes
Parity check codes
Receivers
Stability analysis
Transmitters
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Summary: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.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2019.2911499