Space-Time Block Codes with Full Diversity using Linear Precoding and Linear Receivers
نویسندگان
چکیده
Abstract— In order to increase the diversity order of a multiantenna system at a moderate cost of complexity, one may choose Orthogonal Space-Time Block Coding (OSTBC). In this paper, OSTBC is combined with linear precoding matrices to improve the space-time-frequency diversity. Different linear precoding matrices based on either Fourier, Vandermonde or Hadamard constructions are proposed where a simple linear de-precoder can be chosen at the receiver part which performs very close to the Maximum Likelihood (ML) decoder. The system is generalized to different numbers of transmit antennas and different sizes of precoding matrices. It is shown that the combined scheme efficiently exploits the space-time-frequency diversity using a linear decoder leading to an OSTBC with maximal diversity for more than two antennas when a Zero Forcing (ZF) or when an Minimum Mean Square Error (MMSE) equalizer is chosen.
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