Electrical & Computer Engineering, Department of


Date of this Version



Publsihed in the Proceedings of the 7th International Symposium on Digital Signal Processing and Communication Systems (DSPCS’03) and the Proceedings of the 2nd Workshop on the Internet, Telecommunications and Signal Processing (WITSP’03), Coolangatta, Australia (December 2003) (6 p.). Copyright 2003, IEEE. Used by permission.


A number of decoding schemes have been proposed for Layered Space-Time systems, such as the Ordered Successive Interference Cancellation and the Sorted QR Decomposition. We describe here a new addition to that group, increasing the performance of Layered Space-Time decoding by using the Sorted QR Decomposition technique to construct a list of constellations to be passed to a Maximum Likelihood decoder. This paper shows that signifcant performance improvement can be obtained for symmetric systems, where there is an equal number of transmit and receive antennas. It shows that the proposed scheme, has a roughly linear increase in complexity compared to SQRD. To overcome this increase in computational complexity, an adaptive system is described that has similar performance with reduced complexity.