Transmit Antenna Selection for Downlink Transmission in a Massively Distributed Antenna System Using Convex Optimization

The use of multiple antennas in a spatial multiplexing multiple-input multiple-output (SM-MIMO) system can increase the capacity linearly with the number of antennas, M. However, the radio-frequency (RF) chain associated with each antenna increases the system hardware cost considerably. Antenna selection is a signal processing technique that helps to reduce the system complexity and cost of the RF front-end. This paper describes the novel concept of transmit antenna selection method for the massively distributed antenna system, which is conceived as a technique to increase the data-rate beyond the Long Term Evolution (LTE) and LTE Advanced (LTEA) technologies. In this work, convex optimization is used to determine the optimum antennas for the massively distributed MIMO, to achieve the best compromise between the achievable capacity and system complexity. Specifically, the interior-point algorithm from optimization theory is utilized. For the case of an extremely large antenna array, we observe from the simulations that antenna selection is dependent only upon the large scale fading (LSF). So complexity of the antenna selection algorithm reduces to O(M) if the bucket sorting algorithm is employed. Simulation results confirm that our proposed method works well in a massively distributed antenna system, and its performance is close to the optimal antenna selection algorithm.

• Publication year

  2012

• Venue

  2012 Seventh International Conference on Broadband, Wireless Computing, Communication and Applications

• Publication date

  2012-11-01

• Fields of study

  Computer Science, Engineering

• Identifiers
  DOI 10.1109/BWCCA.2012.44
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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