Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Differential Space Time Coding based on Different Unitary Matrices Sets

  • Lee, Kwang-Jae (Dept. of Multimedia, Information and Telecommunication, Hanlyo University) ;
  • Kim, Chang-Joo (Electronics and Telecommunication Research Institute(ETRI)) ;
  • Yoo, Hyun-Seok (Dept. of Information and Communication, Chonbuk National University) ;
  • Kim, Sung-Hun (Dept. of Information and Communication, Chonbuk National University) ;
  • Lee, Moon-Ho (Dept. of Information and Communication, Chonbuk National University)
  • Published : 2006.12.31
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Abstract

This paper investigates a distinct set of complex unitary matrices for QPSK differential space time coding. After properly selecting the initial transmission matrix and unitary matrices we find that the different combinations of them could lead different BER performance over slow/fast Rayleigh fading channels and antennas correlated channels. The numerical results show that the proper selection of the initial transmission matrix and the set of unitary matrices can efficiently improve the bit error rate performance, especially for the antennas correlated fading channel. The computer simulations are evaluated over slow and fast Rayleigh fading channels.

Keywords

References

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