A new energy efficient beamforming strategy for MISO IFBC based on large systems analysis

Sang Rim Lee, Jaehoon Jung, Haewook Park, Inkyu Lee

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    In this paper, we propose a new beamforming design to maximize energy efficiency (EE) for multiple input single output interfering broadcast channels (IFBC). Under this model, the EE problem is non-convex due to the coupled interference and its fractional form, and thus it is difficult to solve the problem. Conventional algorithms which address this problem have adopted an iterative method for each channel realization, which requires high computational complexity. In order to reduce the computational complexity, we parameterize the beamforming vector by scalar parameters related to beam direction and power. Then, by employing asymptotic results of random matrix theory, we identify the optimal parameters to maximize the EE in the large system limit. Based on the asymptotic results, the proposed scheme can provide insights on the average EE performance, and a simple yet efficient beamforming strategy is introduced for the finite system case. Numerical results confirm that the proposed scheme shows a negligible performance loss compared to the best result achieved by the conventional approaches even with small system dimensions, with much reduced system complexity.

    Original languageEnglish
    Title of host publication2016 IEEE International Conference on Communications, ICC 2016
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781479966646
    DOIs
    Publication statusPublished - 2016 Jul 12
    Event2016 IEEE International Conference on Communications, ICC 2016 - Kuala Lumpur, Malaysia
    Duration: 2016 May 222016 May 27

    Other

    Other2016 IEEE International Conference on Communications, ICC 2016
    Country/TerritoryMalaysia
    CityKuala Lumpur
    Period16/5/2216/5/27

    ASJC Scopus subject areas

    • Computer Networks and Communications

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