Rate adaptation for wireless network coding using partial overhearing

• Published in: IEEE communications letters Vol. 13; no. 12; pp. 890 - 892
• Main Authors: HWANG, Chan-Soo, MOON, Hichan
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-12-2009; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Adaptation; Adaptive modulation; Additive white noise; Applied sciences; AWGN; Broadcasting; Channels; Coding; Coding, codes; Decoding; Exact sciences and technology; Information, signal and communications theory; Modulation, demodulation; Moon; Networks; Numerical control; Receivers; Relays; Signal and communications theory; Splitting; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Teletraffic; Throughput; Topology; Transmission and modulation (techniques and equipments); Transmitters; Wireless communication; wireless network coding; Wireless networks; Relay; Flow rate regulation; Wireless telecommunication; Information rate; Teletraffic; Information transmission; Data flow; wireless network coding; Coding; Traffic management; Traffic control; Wireless network; Transmission rate; Adaptive modulation
• ISSN: 1089-7798; 1558-2558
• DOI: 10.1109/LCOMM.2009.12.091324

This letter investigates rate adaptation of network coding (NC) in a wireless network. In the network, two independent data flows intersect at a relay and a receiver can overhear the data flow of which it is not the intended destination. We propose NC schemes which actively exploit the overhearing channels by adapting the transmission rate to the direct- and overhearing-channel conditions. The proposed schemes allow a receiver to overhear only part of the data-flow by rate splitting, thus significantly improving the throughput in poor overhearing-channel conditions.