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Research Article Open access CC BY 4.0

A Multi-Antenna Design Scheme based on Hadamard Matrices for Wireless Communications

K. O. O. Anoh, M. C. Chukwu, Y. A. S. Dama, R. A. Abd-Alhameed, O. Ochonogor, S. M. R. Jones

Journal of Advances in Mathematics and Computer Science · pp. 49–64 · Published 9 Oct 2014

10.9734/BJMCS/2015/12616

Abstract

A quasi-orthogonal space time block coding (QO-STBC) scheme that exploits Hadamard matrix properties is studied and evaluated. At first, an analytical solution is derived as an extension of some earlier proposed QO-STBC scheme based on Hadamard matrices, called diagonalized Hadamard space-time block coding (DHSBTC). It explores the ability of Hadamard matrices that can translate into amplitude gains for a multi-antenna system, such as the QO-STBC system, to eliminate some off-diagonal (interference) terms that limit the system performance towards full diversity. This property is used in diagonalizing the decoding matrix of the QO-STBC system without such interfering elements. Results obtained quite agree with the analytical solution and also reflect the full diversity advantage of the proposed QO-STBC system design scheme. Secondly, the study is extended over an interference-free QO-STBC multi-antenna scheme, which does not include the interfering terms in the decoding matrix. Then, following the Hadamard matrix property advantages, the gain obtained (for example, in 4x1 QO-STBC scheme) in this study showed 4-times louder amplitude (gain) than the interference-free QO-STBC and much louder than earlier DHSTBC for which the new approach is compared with.

QO-STBC STBC Hadamard matrix null interference full diversity multiple antennas

References (29)

  1. 1 Digital communications [DOI]
  2. 2 Fundamentals of Wireless Communication [DOI]
  3. 3 A simple transmit diversity technique for wireless communications [DOI]
  4. 4 The Mobile Radio Propagation Channel [DOI]
  5. 5 A quasi-orthogonal space-time block code [DOI]
  6. 6 The Mobile Radio Propagation Channel [DOI]
  7. 7 LTE-advanced: next-generation wireless broadband technology [Invited Paper [DOI]
  8. 8 Hadamard Matrices and Their Applications [DOI]
  9. 9 Minimal non-orthogonality rate 1 space-time block code for 3+ Tx antennas [DOI]
  10. 10 Hadamard Matrices and Their Applications [DOI]
  11. 11 Improved quasi-orthogonal codes through constellation rotation [DOI]
  12. 12 Multiple transmit antenna differential detection from generalized orthogonal designs [DOI]
  13. 13 Obtaining full-diversity space-frequency codes from space-time codes via mapping [DOI]
  14. 14 Space-Time/Frequency Coding for MIMO-OFDM in Next Generation Broadband Wireless Systems [DOI]
  15. 15 Quasi-Orthogonal Space-Frequency and Space-Time-Frequency Block Codes for MIMO OFDM Channels [DOI]
  16. 16 Space-time code design in OFDM systems [DOI]
  17. 17 Towards maximum achievable diversity in space, time, and frequency: performance analysis and code design [DOI]
  18. 18 On some applications of Hadamard matrices [DOI]
  19. 19 A novel QO-STBC scheme with linear decoding for three and four transmit antennas [DOI]
  20. 20 Optimal diversity product rotations for quasi-orthogonal STBC with MPSK symbols [DOI]
  21. 21 Optimal rotation angles for quasi-orthogonal space-time codes with PSK modulation [DOI]
  22. 22 A New Approach for OSTBC and QOSTBC [DOI]
  23. 23 Improved quasi-orthogonal codes through constellation rotation [DOI]
  24. 24 Improved quasi-orthogonal codes through constellation rotation [DOI]
  25. 25 A Simplified Improvement on the Design of QO-STBC Based on Hadamard Matrices [DOI]
  26. 26 Improved Alamouti STBC Multi-Antenna System Using Hadamard Matrices [DOI]
  27. 27 INTERNATIONAL JOURNAL OF COMPUTER APPLICATIONS [DOI]
  28. 28 IEEE Transactions on Wireless Communications [DOI]
  29. 29 Int'l J. of Communications, Network and System Sciences [DOI]

Cited by 2

Interference-Free Space-Time Block Codes with Directional Beamforming for Future Networks

Kelvin Anoh, Bamidele Adebisi, Sumaila Mahama · 2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) · 2019

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