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MIMO System Optimization Using STTC Based STBC with Channel Estimation

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Abstract

We propose a new architecture involving space time trellis code (STTC) concatenated with space time block code (STBC) using modified sphere decoder (MSD-1) at the receiver for improving system performance in the multi-antenna environment. With the aim of increasing the ‘Diversity Order’ of signal set, rotated versions of quadrature amplitude modulation (QAM) constellation have been used in multidimensional space and the associated design parameters required to search an effective signal constellation have been optimized. The limitations on account of complexity owing to multiple copies of data being received after experiencing various channel effects in the multi input multi output (MIMO) systems have been looked into. Accordingly, MSD-1 algorithm has been proposed with lower complexity, which in turn would give rise to a system with high spectral efficiency. The system gains have been verified with channel state information (CSI) errors.

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Authors and Affiliations

  1. Government College of Engineering & Technology, Jammu, India

    Sameru Sharma

  2. Power Development Department, Jammu, India

    Sanjay Sharma

  3. GND University, Amritsar, India

    Derick Engles

Authors
  1. Sameru Sharma
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  2. Sanjay Sharma
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  3. Derick Engles
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Correspondence to Sameru Sharma.

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Sharma, S., Sharma, S. & Engles, D. MIMO System Optimization Using STTC Based STBC with Channel Estimation. Wireless Pers Commun 66, 147–165 (2012). https://doi.org/10.1007/s11277-011-0330-7

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  • DOI: https://doi.org/10.1007/s11277-011-0330-7

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