DocumentCode :
775444
Title :
Computations of DSI (TASI) Overload as a Function of the Traffic Offered
Author :
Kou, K.Y. ; O´Neal, J.B., Jr. ; Nilsson, A.A.
Author_Institution :
ITT Corp., Raleigh, NC, USA
Volume :
33
Issue :
2
fYear :
1985
fDate :
2/1/1985 12:00:00 AM
Firstpage :
188
Lastpage :
190
Abstract :
This paper presents an analysis of the performance of a digital speech interpolation (DSI) system as a function of the traffic offered to the system. We assume that the DSI overload degradation occurs as clipping or freezeout. This is identical to TASI freezeout. Unlike conventional analysis, which assumes all of the trunks entering the DSI system are busy all the time, we calculate the freezeout fraction as a function of the traffic offered. In almost all practical situations the freezeout fraction, computed based on traffic assumptions, is considerably less than that computed assuming all trunks are busy. When a DSI system is used to compress N trunks down into c channels, there is always a tradeoff between the blocking probability in the trunk group and the degradation introduced by the DSI system. This tradeoff depends on the traffic offered and is explored in this paper.
Keywords :
Digital communications; Speech communication; Degradation; Gain measurement; Interpolation; Performance analysis; Signal Processing Society; Speech analysis; Switching circuits; Switching systems; Telephony; Waste materials;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1985.1096267
Filename :
1096267
Link To Document :
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