Reduced Complexity by Combining Norm based Ordering MMSE-BSIDE Detection in MIMO Systems

Authors

  • Ramya Jothikumar Sri Manakula Vinayagar Engineering College Puducherry
  • Nakkeeran Rangaswamy Department of Electronics Engineering, School of Engineering and Technology, Pondicherry University, Puducherry, 605014, India

Abstract

The breadth first signal decoder (BSIDE) is well known for its optimal maximum likelihood (ML) performance with lesser complexity. In this paper, we analyze a multiple-input multiple-output (MIMO) detection scheme that combines; column norm based ordering minimum mean square error (MMSE) and BSIDE detection methods. The investigation is carried out with a breadth first tree traversal technique, where the computational complexity encountered at the lower layers of the tree is high. This can be eliminated by carrying detection in the lower half of the tree structure using MMSE and upper half using BSIDE, after rearranging the column of the channel using norm calculation. The simulation results show that this approach achieves 22% of complexity reduction for 2x2 and 50% for 4x4 MIMO systems without any degradation in the performance.

Author Biographies

Ramya Jothikumar, Sri Manakula Vinayagar Engineering College Puducherry

Associate Professor

Department of Electronics and Communication Engineering

Sri Manakula Vinayagar Engineering College

Puducherry

Nakkeeran Rangaswamy, Department of Electronics Engineering, School of Engineering and Technology, Pondicherry University, Puducherry, 605014, India

Department of Electronics Engineering,

School of Engineering and Technology,

Pondicherry University,

Puducherry, 605014, India

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Published

2017-08-14

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Section

Wireless and Mobile Communications