Electrical & Computer Engineering, Department of


Date of this Version



Published in International Conference on Signal Processing and Communication Systems (ICSPCS 2007), Gold Coast, Australia (December 17-19, 2007): 232-238. Copyright 2007, IEEE. Used by permission.


The paper examines the implementation of Quasi-Orthogonal Space-Time-Frequency Codes (QOSTFCs) to increase data rates and error performance in recently proposed STFC Multiband OFDM Ultra Wideband (MB-OFDM UWB) communications systems. It is shown that, an order-4 QOSTFC not only can provide the full rate, but also may provide significantly better error performance, compared to the conventional MB-OFDM (without STFCs), and considerably better error performance, compared to order-4, orthogonal STFC MBOFDM, without increasing the total transmission power.