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Comprehensive study on a 2 × 2 full-rate and linear decoding complexity space-time block code
, Article IET Communications ; Volume 9, Issue 1 , 2015 , Pages 122-132 ; 17518628 (ISSN) ; Talebi, S ; Abouei, J ; Sharif University of Technology
Institution of Engineering and Technology
2015
Abstract
This paper presents a comprehensive study on the Full-Rate and Linear-Receiver (FRLR) STBC proposed as a newly coding scheme with the low decoding complexity for a 2×2 MIMO system. It is shown that the FRLR code suffers from the lack of the non-vanishing determinant (NVD) property that is a key parameter in designing a full-rate STBC with a good performance in higher data rates, across QAM constellation. To overcome this drawback, we show that the existence of the NVD feature for the FRLR code depends on the type of the modulation. In particular, it is analytically proved that the FRLR code fulfills the NVD property across the PAM constellation but not for the QAM scheme. Simulation results...