Performance Enhancement of MIMO OFDM for Higher Spectral Efficiency (original) (raw)

Abstract

The Multiple-Input Multiple-Output based wireless system is a promising high data rate interface technology. Diversity methods provide the receiver with independently faded copies of the transmitted signal with the expectation that at least one of these replicas will be received data. This is ranges of techniques available through which these faded copies can be recovered and used as part of arrangements. This paper proposes a method based on Multiple-Input Single-Output (MISO) with Space-Time Block Coding (STBC) and Multiple-Input Multiple-Output (MIMO) set-up for use in wireless channels. A special of STBC called Alamouti code is used for exploiting in the performance of MISO and MIMO in frequency selective fading environment. The observed with and without STBC in frequency selective faded channels. The diversity gain of MISO and MIMO systems in terms of BER for High QAM modulation scheme. The obtained results demonstrate that spatial diversity along with the power of STBC significantly improves the error performance in frequency selective wireless fading channels. These techniques offer a significant gain over a traditional single input single output (SISO) channel.

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References (8)

  1. A family of space-time block codes for wireless communications, January 01, 2008 [2] 10-1-2011 Design of Minimum BER Linear Space-Time Block Codes for MIMO Systems Equipped with Zero-Forcing Equalizer Correlated Channels
  2. Contemporary Engineering Sciences, Vol. 5, 2012, no. 8, 365 -374
  3. ECPS 2005 Conference, 15-18 March 2005, BREST, FRANCE
  4. International Journal of Smart Home Vol.4, No.4, October, 2010
  5. Zero-forcing equalization for time-varying systems with memory ̌ by Cassio B. Ribeiro, Marcello L. R. de Campos, and Paulo S. R. Diniz
  6. Canadian Journal on Signal Processing Vol. 2, No. 2, May 2011
  7. Multiuser MIMO in LTE Advanced Vol.2, Special Issue 1, March 2014
  8. Contemporary Engineering Sciences, Vol. 5, 2012, no. 8, 365 -374