Performance Analysis of Random Linear Network Coding in Two-Source Single-Relay Networks

This paper considers the multiple-access relay channel in a setting where two source nodes transmit packets to a destination node, both directly and via a relay node, over packet erasure channels. Intra-session network coding is used at the source nodes and inter-session network coding is employed at the relay node to combine the recovered source packets of both source nodes. In this work, we investigate the performance of the network-coded system in terms of the probability that the destination node will successfully recover the source packets of the two source nodes. We build our analysis on fundamental probability expressions for random matrices over finite fields and we derive upper bounds on the system performance for the case of systematic and non-systematic network coding. Simulation results show that the upper bounds are very tight and accurately predict the decoding probability at the destination node. Our analysis also exposes the clear benefits of systematic network coding at the source nodes compared to non-systematic transmission.Comment: Proc. ICC 2015, Workshop on Cooperative and Cognitive Mobile Networks (CoCoNet), to appea

Rethinking the Intercept Probability of Random Linear Network Coding

This letter considers a network comprising a transmitter, which employs random linear network coding to encode a message, a legitimate receiver, which can recover the message if it gathers a sufficient number of linearly independent coded packets, and an eavesdropper. Closed-form expressions for the probability of the eavesdropper intercepting enough coded packets to recover the message are derived. Transmission with and without feedback is studied. Furthermore, an optimization model that minimizes the intercept probability under delay and reliability constraints is presented. Results validate the proposed analysis and quantify the secrecy gain offered by a feedback link from the legitimate receiver.Comment: IEEE Communications Letters, to appea

Corporate Social Performance of Indian FMCG Companies

Effective Corporate Social Responsibilities or CSR initiatives shall be taken keeping all thestakeholder’s issues in mind including the legal, ethical, commercial and other expectationssociety has for the business. CSR initiatives in India are now taken by many companies. Especiallyfor the FMCG companies, where the major challenge is reduction of packaging materials,these companies are doing work in the field of Environment, Health care, Education, Communitywelfare, Women's empowerment and Girl Child care. Companies like Hindustan Unileverstarted work on CO2 reduction also. The websites of these companies are providing informationabout their CSR initiatives but are found not updated regularly. For checking their CSRperformance, Karmayog Rating is taken. The rating gives good insight on CSR ratings of majorFMCG companies of India. The method of calculating the rating also discussed. In appendices,India’s top three major FMCGs companies overall CSR initiatives are discussed. Copyright © www.iiste.or