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Hybrid trellis-coded CPFSK signalling

Tianqi Mao

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Abstract

A hybrid trellis-coded CPFSK signalling which employs a time-varying mapper is considered to improve the performance of CPFSK signalling. The best obtainable codes are sound for the rate 1/2 encoder combined with a 4-ary CPFSK modulator. It is numerically found that the hybrid trellis-coded CPFSK signals increase the minimum Euclidean distance of the conventional trellis-coded CPFSK signals.

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What this paper is about

A hybrid trellis-coded CPFSK signalling which employs a time-varying mapper is considered to improve the performance of CPFSK signalling. The best obtainable codes are sound for the rate 1/2 encoder combined with a 4-ary CPFSK modulator. It is numerically found that the hybrid trellis-coded CPFSK signals increase the minimum Euclidean distance of the conventional trellis-coded CPFSK signals.

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Available abstract

A hybrid trellis-coded CPFSK signalling which employs a time-varying mapper is considered to improve the performance of CPFSK signalling. The best obtainable codes are sound for the rate 1/2 encoder combined with a 4-ary CPFSK modulator. It is numerically found that the hybrid trellis-coded CPFSK signals increase the minimum Euclidean distance of the conventional trellis-coded CPFSK signals.

Key concepts: Trellis (graph), Frequency-shift keying, Encoder, Trellis modulation, Euclidean distance, Computer science, Continuous phase modulation, Algorithm

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