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Mutimedia Communications Over Mobile Packet Networks.

Fabri, S. N. (2001) Mutimedia Communications Over Mobile Packet Networks. Doctoral thesis, University of Surrey (United Kingdom)..

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Abstract

This thesis describes several concepts associated with the transmission of multimedia services over mobile radio access networks. The error performance and traffic requirements of real-time video transmission over the General Packet Radio Services (GPRS) access network and its successor Enhanced-GPRS is examined. In view of this, video error resilience techniques which exploit channel prioritisation mechanisms are introduced with a view to increasing the robustness of received video sequences encoded with MPEG-4 to channel errors. These include stream prioritisation using unequal error protection and region-of-interest prioritisation for use in multiparty communications and streaming applications. A new forward-error correction scheme for EGPRS which uses iterative serially-concatenated convolutional-Reed Solomon codes is designed and is shown to significantly enhance the error performance for real-time services. A study of the use of backward error correction mechanisms when transmitting streaming multimedia services is carried out, and a new retransmission scheme is introduced to increase the capacity of the radio access network when supporting streaming services.

Item Type: Thesis (Doctoral)
Divisions : Theses
Authors : Fabri, S. N.
Date : 2001
Additional Information : Thesis (Ph.D.)--University of Surrey (United Kingdom), 2001.
Depositing User : EPrints Services
Date Deposited : 30 Apr 2019 08:07
Last Modified : 20 Aug 2019 15:32
URI: http://epubs.surrey.ac.uk/id/eprint/851301

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