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1972•IRE Transactions on Communications SystemsRequires access

A Signalling Scheme for Frequency-Shift-Keying Channels With Noiseless Feedback

L. Marier, Tzay Y. Young

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Abstract

Stochastic approximation is applied to the design of a frequency-shift-keying (FSK) feedback scheme. FSK signals are transmitted over a channel with additive white Gaussian noise (AWGN) and the frequency estimate is fed back to the transmitter. A signaling scheme similar to the Schalkwijk-Kailath amplitude-shift-keying (ASK) scheme is derived and performance curves are presented. The scheme performs much better than ASK or FSK without feedback; however, under the average-power limitation, its performance is, in general, inferior to that of ASK feedback schemes.

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What this paper is about

Stochastic approximation is applied to the design of a frequency-shift-keying (FSK) feedback scheme. FSK signals are transmitted over a channel with additive white Gaussian noise (AWGN) and the frequency estimate is fed back to the transmitter. A signaling scheme similar to the Schalkwijk-Kailath amplitude-shift-keying (ASK) scheme is derived and performance curves are presented. The scheme performs much better than ASK or FSK without feedback; however, under the average-power limitation, its performance is, in general, inferior to that of ASK feedback schemes.

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Available abstract

Stochastic approximation is applied to the design of a frequency-shift-keying (FSK) feedback scheme. FSK signals are transmitted over a channel with additive white Gaussian noise (AWGN) and the frequency estimate is fed back to the transmitter. A signaling scheme similar to the Schalkwijk-Kailath amplitude-shift-keying (ASK) scheme is derived and performance curves are presented. The scheme performs much better than ASK or FSK without feedback; however, under the average-power limitation, its performance is, in general, inferior to that of ASK feedback schemes.

Key concepts: Frequency-shift keying, Amplitude-shift keying, Ask price, Amplitude and phase-shift keying, Additive white Gaussian noise, Transmitter, Keying, Mathematics

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