A Dual Stage Linear Prediction Approach Towards Wideband FM Demodulation With Multilevel and Partial Response Signaling
Technical Report,12 May 2016,27 Oct 2017
University of New Mexico Albuquerque United States
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Wideband Frequency Modulation is a popular modulation technique for satellite communications due to its ability to deal with trans-ionospheric distortion. Continuous Phase Modulation is a popular frequency modulation technique used in mobile communications due to spectral efficiency attributable to its continuous phase property and power efficiency attributable to its constant modulus property. The primary bottleneck in using continuous phase modulation is that the optimal receiver is a Maximum Likelihood receiver implemented via the Viterbi algorithm, requires precise knowledge of the memory length, requires that the modulation index be a ratio of incommensurate integers, and its complexity increases exponentially with the number of phase states. In this report, we present and analyze a generalized version of the multirate frequency transformation-electronics steered array approach developed by the authors towards wideband continuous phase modulation demodulation with memory that avoids the aforementioned problems with the Viterbi approach.
- Radio Communications