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We propose the QoS-driven opportunistic cooperation schemes for the wireless relay networks. By integrating information theory with the concept of effective capacity, our schemes aim at maximizing the relay network throughput subject to a given delay QoS constraint. Applying the time division multiple access (TDMA) and frequency division multiple access (FDMA) techniques to the relay networks, we...
We develop a cross-layer optimization framework incorporating opportunistic routing and quality-of service (QoS) driven power allocation. By applying opportunistic routing, we optimally select one relay for each source-destination pair to assist their transmissions. By integrating information theory with the concept of effective capacity, our strategies aim at maximizing the relay network throughput...
We propose several relay selection strategies for distributed space-time cooperative systems, in which the Alamouti scheme is used. Our strategies select the best two nodes among the source and all relays to assist the packet transmissions from the source to the destination. In the amplify-and-forward mode, we develop an efficient algorithm to select the optimal cooperative nodes which can maximize...
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