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Wireless Personal Communications

, Volume 55, Issue 4, pp 539–550 | Cite as

Capacity of Orthogonalized Weibull MIMO Channels Under Different Adaptive Transmission Techniques

  • Hai-Lin XiaoEmail author
  • Shan Ouyang
  • Zai-Ping Nie
  • Feng Zhao
Article

Abstract

Space-time block codes (STBCs) are known to orthogonalize the multiple input multiple out (MIMO) wireless channels. In this paper, we study the capacity of STBCs over Weibull MIMO channels under three adaptive transmission techniques: optimal power and rate adaptation, optimal rate adaptation with constant transmit power and channel inversion with fixed rate, and obtain closed-form expressions for the corresponding capacity. This capacity provides an upper bound on spectral efficiency using these techniques and avoids Monte Carlo simulations. Moreover, we also examine the effects of the fading severity on the concerned quantities. The figures show that our theoretical results of channel capacity line up exactly with the simulations.

Keywords

Space time block codes Multiple input multiple out Adaptive transmission techniques Channel capacity Weibull fading channels 

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Copyright information

© Springer Science+Business Media, LLC. 2009

Authors and Affiliations

  • Hai-Lin Xiao
    • 1
    Email author
  • Shan Ouyang
    • 1
  • Zai-Ping Nie
    • 2
  • Feng Zhao
    • 1
  1. 1.School of Information and CommunicationsGuilin University of Electronic TechnologyGuilinPeople’s Republic of China
  2. 2.School of Electronic EngineeringUniversity of Electronic Science and Technology of ChinaChengduPeople’s Republic of China

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