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Erschienen in:
2014 | OriginalPaper | Buchkapitel
On the Comparison between the Bit-by-Bit Technique and the Viterbi Technique for Demodulation of Single-Carrier Signals Affected by Clipping
verfasst von : Alexey M. Markov
Erschienen in: Internet of Things, Smart Spaces, and Next Generation Networks and Systems
Verlag: Springer International Publishing
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To decrease out-of-band radiation of signals, based on single-carrier modulation, root-raised cosine (RRC) filters are usually used. To decrease a peak-to average-power ratio (PAPR) we have clipped signals, passed RRC filters. To retain the constant peak power of a power amplifier for different clipping levels we have increased the values of clipped signals before the power amplifier. In this paper, we have studied the bit-by-bit coherent reception technique and the Viterbi technique and also calculated bit-error-rate (BER) for BPSK, QMSK, 8-PSK and 16-QAM. We have found the optimal clipping probability and the maximum gain in the peak signal-noise ratio (PSNR) of the Viterbi technique in comparison with the bit-by-bit technique.