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Maximizing the Viterbi Winning Path Metric to Estimate Carrier Frequency and Phase Offsets in Continuous Phase Modulated Signals
KTH, Skolan för elektro- och systemteknik (EES), Signalbehandling.ORCID-id: 0000-0002-4265-9490
2012 (engelsk)Patent (Annet (populærvitenskap, debatt, mm))
Abstract [en]

A system and method for estimating carrier frequency offset Δf and carrier phase offset φ0 inherent in a received CPM signal. Samples of a continuous phase modulated (CPM) signal are received. A maximum of an objective function J is determined over a two-dimensional region parameterized by frequency offset v and phase offset w. The coordinates vmax and wmax of a maximizing point in the region represent estimates of the carrier frequency offset Δf and the carrier phase offset φ0. To evaluate the objective function J at a point (v, w), apply a frequency shift of amount −v and a phase shift of amount −w to the received samples to obtain modified samples, and perform Viterbi demodulation on the modified samples to obtain a winning path metric value at a final time. The winning path metric value is the objective function value J(v, w). 

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2012.
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URN: urn:nbn:se:kth:diva-120148OAI: oai:DiVA.org:kth-120148DiVA, id: diva2:613710
Patent
US US8891695-B2 (2014-11-18)
Merknad

QC 20141201

Tilgjengelig fra: 2013-04-01 Laget: 2013-04-01 Sist oppdatert: 2014-12-01bibliografisk kontrollert

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