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Throughput Analysis of TCP on Channels with Memory

Zorzi, Michele and Chockalingam, A and Rao, Ramesh R (2000) Throughput Analysis of TCP on Channels with Memory. In: IEEE Journal on Selected Areas in Communications, 18 (7). pp. 1289-1300.


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The focus of this paper is to analyze the relative sensitivity of the bulk throughput performance of different versions of TCP, viz,, OldTahoe, Tahoe, Reno, and New Reno, to channel errors that are correlated. We investigate the performance of a single wireless TCP connection in a local environment by modeling the correlated packet loss/error process (e.g,, as induced by a multipath fading channel) as a first-order Markov chain. A major contribution of the paper is a unified analytical approach which allows the evaluation of the throughput performance of various versions of TCP, The main findings of this study are that 1) error correlations significantly affect the performance of TCP, and in particular may result in considerably better performance for Tahoe and NewReno; and 2) over slowly fading channels which are characterized by significant channel memory, Tahoe performs as well as NewReno. This leads us to conclude that a clever design of the lower layers that preserve error correlations, naturally present on wireless links because of the fading behavior, could be an attractive alternative to the development or the use of more complex versions of TCP.

Item Type: Journal Article
Publication: IEEE Journal on Selected Areas in Communications
Publisher: IEEE
Additional Information: ©2000 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: Bursty errors;Markov channel;slowfading;TCP
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 25 Aug 2008
Last Modified: 11 Jan 2013 10:28
URI: http://eprints.iisc.ac.in/id/eprint/1700

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