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Low-Complexity BER Computation for Coherent Detection of Orthogonal Signals

Publication typeJournal paper
Year of publicationIn press
AuthorsLuca Rugini and Giuseppe Baruffa
TitleLow-Complexity BER Computation for Coherent Detection of Orthogonal Signals
Journal titleElectronics Letters
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PublisherWiley
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AbstractThe bit error rate (BER) computation for coherently detected orthogonal signals in additive white Gaussian noise requires numerical integration, which can be cumbersome in low-complexity devices. Here we propose a BER computation approach that circumvents the need for repeated numerical integration. First, we select a low-complexity BER approximation formula, with unknown parameters to be determined. Second, we determine the unknown parameters by fitting the BER approximation to a few BER values known in advance. The BER comparison with the exact results shows that the accuracy of the proposed low-complexity approach is satisfactory for several constellation sizes of interest. This enables the possibility of BER self-computation in low-complexity devices that use orthogonal signals, like those used in the Internet of Things (IoT).
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Last update: 2015-10-12, 16:44:51