Mohamed Salman

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In this research paper, we carry out comparative performance evaluation of Low Density Parity- Check (LDPC) coded and Turbo coded orthogonal frequency division multiplexing (OFDM) systems by varying a number of parameters/factors including channel types, data block size, and number of decoding iterations. OFDM possesses the ability to counter sever channel(More)
We consider a cognitive radio system that consists of primary user, secondary user, and their destinations. The secondary user has a relaying capability, i.e., it transmits the relayed packets from the primary user. Unlike most of the previous works that restrict the secondary user to transmit only in the idle time slots, we assume that the secondary user(More)
—We consider a cooperative relaying system which consists of a number of source terminals, one shared relay, and a common destination with multi-packet reception (MPR) capability. In this paper, we study the stability and delay analysis for two cooperative relaying schemes; the sensing-based cooperative (SBC) scheme and the decision-based cooperative (DBC)(More)
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