Cooperative Communication in Wireless Systems

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The broadcast nature of wireless communications suggests that a source signal transmitted towards the destination can be "Overheard" at neighboring nodes. Cooperative communication refers to processing of this overheard information at the surrounding nodes and retransmission towards the destination to create spatial diversity, thereby to obtain higher throughput and reliability. In this paper authors describe information theoretic models suitable for cooperation, study achievable rate regions and outage probabilities, and describe a channel coding technique that allows exploiting the diversity advantages of cooperation.