An efficient inter-unit interference reduction technique for a STTD system

Authors:
Jongsub Cha;Heyungsub Lee;Youngok Kim
Affiliations:
RFID/USN Research Department, Electronics and Telecommunications Research Institute, Daejeon, Korea;RFID/USN Research Department, Electronics and Telecommunications Research Institute, Daejeon, Korea;Department of Electronic Engineering, Kwangwoon University, Seoul, Korea
Venue:
IEEE Communications Letters
Year:
2010

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Abstract

A multiple space-time transmit diversity (MSTTD) detection scheme on quasi-static Rayleigh flat-fading channels is proposed. The proposed detection algorithm first determines the candidates for M units each using a QR decomposition, and computes a reference metric for a full-length vector consisting of the first candidates at each unit. Then it performs a more likely searching simply by comparing the reference metric with other candidates such that an inter-unit interference can be effectively eliminated. Through these procedures it can approach the ML performance with less complexity even compared to an improved Schnorr-Euchner (ISE) scheme.