Indian Journal of Science and Technology

Abstract

Background/Objectives: The objective is to implement fountain codes on real environment with most improved features of better BER than traditional codes. Analysis/Methodology: The fountain codes were earlier processed on graph based approaches this technique is difficult for implementation over vast environment as its complexity increases with the increase in data. To enhance their applicability and to reduce their complexity to vast environment and research criterion, the methodology being used is the implementation of these codes based on generator matrices which is tended to improved their applicability and processing. The use of reed Solomon codes as pre codes for raptor coding gave the feature of forward error correction and as well as the property of ratelessness. Results/Findings: The implementation results of the approach stated gave great performance enhancement as compared to traditional codes. The use of reed Solomon codes improved the error correcting of the raptor codes and hence the better performance over large values of SNR lower BER as compared to traditional schemes. Conclusion/Applications: The use of Reed Solomon pre coded Raptor codes are applicable to highly noisy and disturbing wireless or wired channels can give great performance by reducing the retransmissions of acknowledgement requests and packet losses. The codes thus generated can be used for research in areas of other IEEE standards such as WI-MAX, LTE. These codes have a bright future when optimized for modern techniques such as antenna diversity or MIMO systems.

Keywords: AWGN Channel, Channel Models, Fountain Codes, Generator Matrix, Hamming Codes, Robust Soliton Degree Distribution