Title :
Near-Far Resistant Synchronization for UWB Communications
Author :
Li, Liping ; Townsend, J. Keith
Author_Institution :
MaxLinear, Inc., Carlsbad, CA, USA
fDate :
2/1/2011 12:00:00 AM
Abstract :
This paper proposes a symbol-level synchronization technique for ultra-wideband (UWB) communications in networks without power control. The near-far problem dramatically degrades the performance of synchronization for UWB communications. The technique is based on an easy-to-implement procedure to suppress the interfering waveforms from high-power users without requiring knowledge of their spreading codes. The technique includes two operations, a "suppression" operation, and a subsequent dimension detection operation that determines the desired user\´s code phase during acquisition in the receiver. Simulation results are provided that show the improved performance of the near-far resistant synchronization procedure proposed in this paper for up to two high-power and four equal-power interfering users when compared to the best alternative from the literature.
Keywords :
interference suppression; radio receivers; synchronisation; ultra wideband communication; UWB communication; dimension detection operation; interfering waveform suppression; near-far resistant synchronization; receiver; suppression operation; symbol-level synchronization technique; ultra-wideband communication; UWB; coarse acquisition; dimension detection; near-far problem;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2010.120610.091659