Investigation of delta modulation of speech for mobile radio

Karim, M.R. (1982) Investigation of delta modulation of speech for mobile radio. IEEE Transactions on Vehicular Technology, 31 (4). pp. 158-165. ISSN 0018-9545, DOI https://doi.org/10.1109/T-Vt.1982.23931.

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Abstract

A characteristic of a mobile radio channel is the occurrence of correlated signal fading that results in burst errors. The use of adaptive delta modulation (ADM) based on explicit transmission of the quantizer step size was proposed earlier for speech communication over such a channel. Two other vaiable step-size delta modulation (VSDM) schemes are presented, and their performance in a mobile radio environment is discussed. One of them is the constant factor delta modulation that uses one-bit memory and produces fast and instantaneous step-size changes. The other is the digitally controlled delta modulation (DCDM) that incorporates a new step-size adaptation strategy using seven bits of memory.

Item Type:	Article
Funders:	UNSPECIFIED
Additional Information:	Pz467 Times Cited:1 Cited References Count:21
Uncontrolled Keywords:	Codes, symbolic - encoding, Delta modulation - analysis, Digital communication systems, Radio transmission - fading, Speech, Adaptive delta modulation, Radio systems, mobile
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Engineering
Depositing User:	Mr Jenal S
Date Deposited:	02 Jan 2014 07:05
Last Modified:	08 Jul 2017 04:03
URI:	http://eprints.um.edu.my/id/eprint/8768

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