A class of nonorthogonal rate-one space-time block codes with controlled interference

Authors:
A. Boariu;D. M. Ionescu
Affiliations:
Nokia Inc., Irving, TX, USA;-
Venue:
IEEE Transactions on Wireless Communications
Year:
2003

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Abstract

Complex, rate one, orthogonal block space-time codes (STCs) exist only for two transmit antennas and were proposed by Alamouti (1998). Designing rate-one block STCs for more than two transmit antennas implies giving up orthogonality. For more than two transmit antennas a class of rate one block STCs with a controlled number of interference terms per detected symbol is presented. Conditions that link the matrix formulation of the receive equation to the matrix formulation of a multiuser detection scheme are discussed. The block STCs design problem is closely related to the class of linear real Hadamard codes.