Title :
Constrained least square pre-distortion scheme for multiuser ultra-wideband
Author :
B.A. Angelico;P.J.E. Jeszensky;T. Abrao
Author_Institution :
Federal University of Technology ? Parana? (UTFPR), Cornelio Procopio, PR, Brazil
fDate :
7/3/2012 12:00:00 AM
Abstract :
The study proposes a constrained least square (CLS) pre-distortion scheme for multiple-input single-output (MISO) multiple access ultra-wideband (UWB) systems. In such a scheme, a simple objective function is defined, which can be efficiently solved by a gradient-based algorithm. For the performance evaluation, scenarios CM1 and CM3 of the IEEE 802.15.3a channel model are considered. Results show that the CLS algorithm has a fast convergence and a good trade-off between intersymbol interference (ISI) and multiple access interference (MAI) reduction and signal-to-noise ratio (SNR) preservation, performing better than time-reversal (TR) pre-distortion.
Journal_Title :
IET Communications
DOI :
10.1049/iet-com.2011.0012