21-04-2012, 10:10 AM
A Model-Based Approach to Evaluation of the Efficacy of FEC Coding in Combating Network Packet Losses
A Model-Based Approach to Evaluation of the Efficacy of FEC Coding in Combating ......doc (Size: 31.5 KB / Downloads: 46)
Abstract
We propose a model-based analytic approach for evaluating the overall efficacy of FEC coding combined with interleaving in combating packet losses in 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. The network path is designed in terms of a single bottleneck node. We develop a procedure for the exact evaluation of the packet-loss, based on a framework. We study both single-session and multiple-session scenarios, and provide a simple way for the more complicated multiple session scenario. We choose the key coding parameters; specifically, interleaving depths, channel coding rates and block lengths appropriately in order to attain high performance.
Existing System:
• For analysis purposes the packet-loss process resulting from the single-multiplexer model was assumed to be independent and, consequently, the simulation results provided show that this simplified analysis considerably overestimates or underestimates the performance of FEC.
• Surprisingly, all numerical results given indicates that the resulting residual packet-loss rates with coding are always greater than without coding, i.e., FEC is ineffective in this application.
• In multiple-session scenarios, the complexity is high in implementing the evaluation of the Performance calculations.
Disadvantages:
• The calculated result for the performance of FEC is not accurate. Thus the efficiency of the FEC cannot be judged.
• Thus we cannot utilize your network for the maximum extent of its efficiency by using the FEC technique.
Proposed System:
• We propose a model-based analytic approach for evaluating the overall efficacy of FEC coding more accurately than any existing system.
• We study both single-session and multiple-session scenarios, and we reduce the complexity in multiple-session scenario.
• Our model has great potential in recovering the packet losses caused by congestion at a bottleneck node of a packet-switched network, provided that the coding rate and other coding parameters are appropriately chosen.
Advantages:
• Accurate evaluation of the performance of FEC in recovering the packet loss during the transmission of data is assured.
• The complexity of calculating the performance of FEC in multiple session scenarios is reduced.
Software Requirements:
FRONT END : JAVA, SWING
TOOLS USED : JFRAME BUILDER
OPERATING SYSTEM: WINDOWS XP
Hardware Requirements:
PROCESSOR : PENTIUM IV 2.6 GHz
RAM : 512 MB
MONITOR : 15”
HARD DISK : 20 GB
CDDRIVE : 52X
KEYBOARD : STANDARD 102 KEYS
MOUSE : 3 BUTTONS