Successive Interference Cancellation Amenable Space---Time Codes with Good Multiplexing-Diversity Tradeoffs

  • Authors:
  • Xiaoming Dai

  • Affiliations:
  • Datang Mobile Communications Equipment Co., Ltd., Beijing, People's Republic of China 100080

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2010

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Abstract

In this work, we introduce a new space---time coding (STC) paradigm which is based on the joint design of quasi-orthogonal space---time block code (Q-OSTBC) and the successive interference cancellation (SIC) detector. Based on the proposed principle, two high-rate Q-OSTBCs for three and four transmit antennas are designed. The symbols of the proposed Q-OSTBCs are of judiciously designed diversity order which can be effectively exploited by the SIC based receiver to cancel interference as well as to obtain diversity gain. The proposed SIC-amenable STC's amicable quasi-orthogonal structure also lends itself to efficient low-complexity linear decoding. Simulation results show that the proposed STC schemes achieve better multiplexing-diversity tradeoffs than the existing conventional schemes.