Skills (8)
Publications (7) View all
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Article: Irregular Convolution and Unity-Rate Coded Network-Coding for Cooperative Multi-User Communications
IEEE Transactions on Wireless Communications 01/2013; 12(3):1231-1243. · 2.59 Impact Factor -
Article: Non-Coherent Near-Capacity Network Coding for Cooperative Multi-User Communications
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ABSTRACT: Near-capacity Non-coherent Cooperative Network coding aided Multi-user (NNCNM) systems are designed with the aid of Extrinsic Information Transfer (EXIT) charts for the sake of approaching the Differential Discrete-input Continuous output Memoryless Channel’s (D-DCMC) system capacity1. The upper and lower Frame Error Ratio (FER) performance bounds are derived for aiding our network coding design. The outage capacity of the D-DCMC channel is also calculated and used for computing the best-case performance bounds of both the corresponding single-link scheme and of the proposed NNCNM system. Moreover, a new technique referred to as the Pragmatic Algebraic Linear Equation Method (PALEM) was proposed for determining the exact number of information sources that may be recovered from the composite NNCNM stream, which constitutes a lower-complexity evaluation of the attainable FER performance of the NNCNM systems without resorting to high-complexity Monte-Carlo simulations. The NNCNM systems advocated are capable of operating within 0.3-0.5 dB from the corresponding DDCMC capacity. A joint treatment of channel and network coding is considered in our system2. The design principles presented in this contribution may be extended to a vast range of NNCNM based systems using arbitrary channel coding schemes.IEEE Transactions on Communications 10/2012; 60(10-10):3059 - 3070. · 1.68 Impact Factor -
Conference Proceeding: Energy-efficient relay aided ad hoc networks using iteratively detected irregular convolutional coded, unity-rate coded and Space-Time Trellis Coded transceivers
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ABSTRACT: The nodes of ad hoc networks are typically battery-powered, hence requiring the employment of energy-efficient schemes. Near-capacity coding schemes allow a single link to communicate using the lowest possible transmit power, while achieving a low Frame Error Ratio (FER). With the same motivation of conserving battery energy, numerous power-aware routing algorithms have been proposed for improving the overall multiuser network's energy-efficiency instead of improving a single link. Taking both these design factors into consideration, we employ Multi-Antenna aided Relays (MA-Rs) in the context of ad hoc networks, which use a three-stage concatenated transceiver constituted by an Irregular Convolutional Code, Unity-Rate Code and Space-Time Trellis Code (IrCC-URC-STTC) equipped with two antennas. All other mobiles are single-antenna assisted nodes and refrain from relaying, hence they dispense with STTC schemes and use a two-stage concatenated IrCC-URC coding scheme. It is confirmed that as expected, in a high-node-density scenario the average energy consumption per information bit and per node becomes about a factor two lower than that in the equivalent Single-Antenna Relay (SA-R) aided networks.Wireless Communications and Networking Conference (WCNC), 2011 IEEE; 05/2011 -
Conference Proceeding: Near-Capacity Network Coding for Cooperative Multi-User Communications.
Proceedings of the 74th IEEE Vehicular Technology Conference, VTC Fall 2011, 5-8 September 2011, San Francisco, CA, USA; 01/2011 -
Conference Proceeding: Near-Capacity Non-Coherent Network-Coding Aided Scheme for Cooperative Multi-User Communications.
Proceedings of the 74th IEEE Vehicular Technology Conference, VTC Fall 2011, 5-8 September 2011, San Francisco, CA, USA; 01/2011
