Mahyar Shirvanimoghaddam

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—Future machine to machine (M2M) communications need to support a massive number of devices communicating with each other with little or no human intervention. Random access techniques were originally proposed to enable M2M multiple access, but suffer from severe congestion and access delay in an M2M system with a large number of devices. In this paper, we(More)
—In this paper, we propose a capacity-approaching analog fountain code (AFC) for wireless channels. In AFC, the number of generated coded symbols is potentially limitless. In contrast to the conventional binary rateless codes, each coded symbol in AFC is a real-valued symbol, generated as a weighted sum of d randomly selected information bits, where d and(More)
Aim of Project This project aims to design and optimize rateless coded cooperation in two-user cooperative multiple access channel (MAC) to maximize system throughput.  Coded cooperation is a user cooperation scheme where each user broadcasts its coded messages, tries to decode its partners' codeword and calculates additional parity symbols before(More)
—In this paper, we revisit the design of Raptor codes for binary input additive white Gaussian noise (BI-AWGN) channels, where we are interested in very low signal to noise ratios (SNRs). A linear programming degree distribution optimization problem is defined for Raptor codes in the low SNR regime through several approxiamtions. We also provide an exact(More)