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Cooperative spectrum sensing, a key technology in cognitive radio, has to summarize all the detection information from cognitive terminals without licensed band. In order to employ both reliable and efficient transmission of overhead, this paper seeks a way of quantifying the detection information with variable length to save the spectrum resource as much as possible. Analysis and simulation show...
The Vertical Bell Laboratories Layered Space-Time (V- BLAST) scheme achieves very high spectral efficiency while maintaining low implementation complexity. However, the error propagation resulting from a wrong cancellation limits the overall system performance greatly. The traditional detection methods proceed assuming that the prior-detected sub-streams are correct at each stage. None of them considers...
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