A MODEL-BASED APPROACH TO EVALUATION OF THE EFFICACY OF FEC CODING IN COMBATING NETWORK PACKET LOSSES


ABSTRACT:

We propose a model-based analytic approach for evaluating the overall efficacy of FEC coding combined with interleaving in combating packet losses in IP networks. The loss of various packets during the data transmission can be reduced by using FEC coding. In this project we are going to evaluate the efficacy of FEC coding. Particularly modeling the network path in terms of a single bottleneck node. We develop a procedure for the exact evaluation of the packet-loss statistics for general arrival processes, based on a framework. We study both single-session and multiple-session scenarios, and provide a simple procedure for the more complicated multiple-session scenario. We show that the unified approach provides an integrated framework for exploring the tradeoffs between the key coding parameters; specifically, interleaving depths, channel coding rates and block lengths. The approach facilitates the selection of optimal coding strategies for different applications with various user quality-of-service (QoS) requirements and system constraints. We also provide an information-theoretic bound on the performance achievable with FEC coding in IP networks.