Prototype For Multimedia Content Delivery Based On Ntc Enhanced Viterbi Algorithm

ABSTRACT

Due to tremendous growth of multimedia applications over networks such as the

Internet, multimedia traffic causes network congestion, which results into packet loss

due to transmission errors resulted by low data transmission reliability.

Forward Error Corrections techniques, have been proposed to increase data

transmission reliability at the price of bandwidth expansion due to high channel code

rates. This is because multimedia files are large in size (in Megabytes), therefore, high

code rates make network bandwidth and transmission speed insufficient, and also

overload network computational resources. One outcome from this, is packet delay

which is an undesirable feature to multimedia applications.

This research has worked on the Non Transmittable Codewords Enhanced Viterbi

Algorithm, for multimedia content delivery. The study involved the following phases,

development of NTC Viterbi simulator using Visual Basic programming language; the

reduction of data encoding rate for transmission; approximation of limits for data

transmission speed (uploading and downloading) performance using High Speed

Packet Access Evolved. The research has found that, modifications made to the model

provided satisfied data transmission speed for multimedia delivery.

The research also has found that, when encoding with a (2,1,2) Lower Locked

Convolutional encoder the outputs obtained were only two bits’ patterns that are,

111011 and 000000 for 1-bit and 0-bit encoding respectively.