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Hybrid constant factor incremental delta modulators

Mytri, VD and Shivaprasad, AP (1986) Hybrid constant factor incremental delta modulators. In: IEE Proceedings F: Radar & Signal Processing, 133 (6). 522 -525.

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Abstract

The paper presents a new adaptive delta modulator, called the hybrid constant factor incremental delta modulator (HCFIDM), which uses instantaneous as well as syllabic adaptation of the step size. Three instantaneous algorithms have been used: two new instantaneous algorithms (CFIDM-3 and CFIDM-2) and the third, Song's voice ADM (SVADM). The quantisers have been simulated on a digital computer and their performances studied. The figure of merit used is the SNR with correlated, /?C-shaped Gaussian signals and real speech as the input. The results indicate that the hybrid technique is superior to the nonhybrid adaptive quantisers. Also, the two new instantaneous algorithms developed have improved SNR and fast response to step inputs as compared to the earlier systems.

Item Type: Journal Article
Additional Information: Copyright 1986 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Modulation;Signal processing;Telecommunication.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 12 Aug 2009 09:21
Last Modified: 19 Sep 2010 05:34
URI: http://eprints.iisc.ernet.in/id/eprint/20866

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