On superposition coding based cooperative diversity schemes

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Conference Proceeding

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We propose two-level superposition coding based relaying schemes in which optimal power and rate allocations are investigated. Instead of confining us with fixed decoding order, two-levels of signals are considered as virtual users in a two-user multiple access channel and we prove that in certain cases the optimal joint multiuser decoding is equivalent to an approach using successive interference cancellation in a fixed order. Numerical results are provided to show the improvements in power savings using our proposed strategies compared with fixed rate and single level coding approach. © 2005 IEEE.

Publication Source (Journal or Book title)

Conference Record - Asilomar Conference on Signals, Systems and Computers

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