On the effects of spreading sequence pairs over MIMO-STS systems

Authors

Tianle Liu, University of WollongongFollow
Ahmed Moftah Ownalla Alshabo, University of WollongongFollow
David Stirling, University of WollongongFollow
Le Chung Tran, University of WollongongFollow
Montserrat Ros, University of WollongongFollow
Prashan Premaratne, University of WollongongFollow
Peter James Vial, University of WollongongFollow
Beata J. Wysocki, University of NebraskaFollow
Tadeusz A. Wysocki, University of NebraskaFollow

RIS ID

103512

Publication Details

T. Liu, A. Alshabo, D. Stirling, L. Tran, M. Ros, P. Premaratne, P. James. Vial, B. Wysocki & T. Wysocki, "On the effects of spreading sequence pairs over MIMO-STS systems," International Journal of Radio Frequency Identification Technology and Applications, vol. 5, (1) pp. 24-47, 2018.

Abstract

Previous studies have found that the Multiple Access Interference (MAI) effect is strongly associated with which sequence pairs are spread over Multiple-Input Multiple-Output Space-Time Spreading (MIMO-STS) systems. An improved method of determining which sequence pairs are to be spread is proposed. The choice of these pairs from the selected spreading code families results in a number of ways to mitigate the MAI effects. A Software Defined Radio (SDR) test bed system has been developed to evaluate the selected spreading sequences, in an attempt to mitigate the MAI effects over 2 x 1 MIMO-STS systems. The SDR test bed results reveal that, for a number of the spreading sequence families, improved transmission properties for asynchronous transmission can be achieved.