Practical network coding for two way relay channels in LTE networks

Hassan Hamdoun, Pavel Loskot, Timothy O'Farrell, Jianhua He

    Research output: Chapter in Book/Published conference outputConference publication


    In this paper, the implementation aspects and constraints of the simplest network coding (NC) schemes for a two-way relay channel (TWRC) composed of a user equipment (mobile terminal), an LTE relay station (RS) and an LTE base station (eNB) are considered in order to assess the usefulness of the NC in more realistic scenarios. The information exchange rate gain (IERG), the energy reduction gain (ERG) and the resource utilization gain (RUG) of the NC schemes with and without subcarrier division duplexing (SDD) are obtained by computer simulations. The usefulness of the NC schemes are evaluated for varying traffic load levels, the geographical distances between the nodes, the RS transmit powers, and the maximum numbers of retransmissions. Simulation results show that the NC schemes with and without SDD, have the throughput gains 0.5% and 25%, the ERGs 7 - 12% and 16 - 25%, and the RUGs 0.5 - 3.2%, respectively. It is found that the NC can provide performance gains also for the users at the cell edge. Furthermore, the ERGs of the NC increase with the transmit power of the relay while the ERGs of the NC remain the same even when the maximum number of retransmissions is reduced.
    Original languageEnglish
    Title of host publication2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)
    Number of pages5
    ISBN (Print)978-1-4244-8332-7
    Publication statusPublished - 1 Jan 2011
    EventIEEE 73rd Vehicular Technology Conference - Yokohama, Japan
    Duration: 15 May 201118 May 2011

    Publication series

    NameProceedings of IEEEVTS Vehicular Technology Conference
    ISSN (Print)1550-2252


    ConferenceIEEE 73rd Vehicular Technology Conference
    Abbreviated titleVTC Spring


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