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A hybrid relaying protocol is proposed in this paper for cognitive radio networks (CRNs) under random jamming attacks of impulsive noise nature. The protocol switches between amplify-and-forward, decode-and-forward or a no-send state depending on the calculated value of the log-likelihood ratio (LLR) of the received signal at each of the randomly distributed cognitive radio (CR) nodes. A LLR-based...
Hybrid relaying combines the merits of both Decode-and-forward (DF) and Amplify-and- forward (AF) by forwarding clean packets in DF if decodes correctly and forwarding soft represented packets in AF if decodes incorrectly. In this paper a hybrid relaying scheme in a cooperative communication system in the presence of impulsive noiseis proposed. In this method, the relay is considered to be decode-and-forward...
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