Joint optimization of relay strategies and resource allocations in cooperative cellular networks.
Published: 2006
Language: eng
Number of pages: 70
ISBN-13: 9780494161265
Description: Consider a wireless cooperative network with a base station and many subscribers that relay information for each other. This thesis proposes a utility maximization framework for such a network, and shows that the optimization of physical-layer relaying strategies can be done efficiently using pricing variables. The target network operates in a frequency-selective environment employing orthogonal frequency-division multiple-access (OFDMA). The proposed solution incorporates traffic demands and channel realizations in a cross-layer design that optimally allocates power and bandwidth, and selects the best relay node and strategy (decode-and-forward versus amplify-and-forward) for each transmission pair. To compare the performance of relaying at different layers, another utility maximization framework that jointly optimizes routing paths and resource allocations is also presented for a network that uses network-layer relaying. This thesis paves the way for further research on cooperative networks that allow more complicating relaying operations.
Notes: Source: Masters Abstracts International, Volume: 44-06, page: 2926.

Thesis (M.A.Sc.)--University of Toronto, 2006.

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