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Space-Time Codebook Design for Spread Systems

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dc.contributor.author Beko, M.
dc.contributor.author Dinis, R.
dc.date.accessioned 2016-10-27T13:52:38Z
dc.date.available 2016-10-27T13:52:38Z
dc.date.issued 2012
dc.identifier.citation Springer WirelessPersonal Communications
dc.identifier.citation -
dc.identifier.uri http://siti2.ulusofona.pt:8085/xmlui/handle/123456789/220
dc.description.abstract The problem of designing space-time constellations for communication in spread multiple-antenna wireless systems over Rayleigh fading channel is addressed. Using the asymptotic union bound on error probability as design criterion, codes based on general complex- valued symbols are obtained with a gradient search optimization technique. New spacetime constellations are constructed and their performance is assessed. Simulation results show that the proposed technique achieves significant performance gains over existing schemes. Since the designed codebooks do not seem to possess any structure that could reduce the memory requirements for storing the corresponding codebook, the problem of designing structured space-time constellations is also addressed. To overcome this problem, a discrete Fourier transform-based approach is adopted to design structured codebooks and their performance is evaluated. The newstructured codebooks also demonstrate significant improvement over state-of-art structured schemes
dc.title Space-Time Codebook Design for Spread Systems


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