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The use of cooperative communications techniques has proven to significantly improve network performance via cooperation among network nodes. In this paper, the authors propose a cooperative extension of Load Adaptive MAC (LA-MAC) protocol proposed earlier by one as a hybrid CSMA-TDMA protocol for MANETs. They describe the design and GNU radio implementation of their protocol to which they refer as Cooperative LA-MAC (CLA-MAC). While their proposed CLA-MAC protocol primarily focuses on the MAC layer, it uses the decode-and-forward cooperative relaying strategy at the PHY layer. Their protocol design takes into account frame structure, message exchange, relay selection, and contention avoidance.
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