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Degradation in finite-harmonic subcarrier demodulation (1995)

Feria, Y. ; Townes, S. ; Pham, T.

In: CASI

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Publication Date: 2013-08-31

Description: Previous estimates on the degradations due to a subcarrier loop assume a square-wave subcarrier. This article provides a closed-form expression for the degradations due to the subcarrier loop when a finite number of harmonics are used to demodulate the subcarrier, as in the case of the buffered telemetry demodulator. We compared the degradations using a square wave and using finite harmonics in the subcarrier demodulation and found that, for a low loop signal-to-noise ratio, using finite harmonics leads to a lower degradation. The analysis is under the assumption that the phase noise in the subcarrier (SC) loop has a Tikhonov distribution. This assumption is valid for first-order loops.

Keywords: COMMUNICATIONS AND RADAR

Type: The Telecommunications and Data Acquisition Report; p 78-86

Format: application/pdf

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