Multi-Branch Fractional Multi-Bit Differential Detection of Continuous Phase Modulation With Decision Feedback

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Executive Summary

Differential detection of continuous phase modulation suffers from significant intersymbol interference. To reduce bit error rate, Multi-branch Fractional Multi-bit Differential Detection (MFMDD) with decision feed-back is proposed. By introducing decision feedback in multi-bit differential detected signals, severe inter-symbol interference can be removed. Simulation results show that the proposed structure can greatly improves the performance compared with MFMDD without decision feedback, and the performance of 9 FMDD is very near to the performance of the coherent detection.

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