High Rate/Low Complexity Space-Time Block Codes for 2x2 Reconfigurable MIMO Systems
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High Rate/Low Complexity Space-Time Block Codes for 2x2 Reconfigurable MIMO Systems

  • Author(s): Vakilian, Vida
  • Mehrpouyan, Hani
  • Hua, Yingbo
  • Jafarkhani, Hamid
  • et al.
Creative Commons 'BY' version 4.0 license
Abstract

In this paper, we propose a full-rate full-diversity space-time block code (STBC) for 2x2 reconfigurable multiple-input multiple-output (MIMO) systems that require a low complexity maximum likelihood (ML) detector. We consider a transmitter equipped with a linear antenna array where each antenna element can be independently configured to create a directive radiation pattern toward a selected direction. This property of transmit antennas allow us to increase the data rate of the system, while reducing the computational complexity of the receiver. The proposed STBC achieves a coding rate of two in a 2x2 MIMO system and can be decoded via an ML detector with a complexity of order M, where M is the cardinality of the transmitted symbol constellation. Our simulations demonstrate the efficiency of the proposed code compared to existing STBCs in the literature.

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