Title :
A multiple antennas Rake receiver with equalization in time-domain for UWB communications
Author :
Ping´an, Li ; Ting, Chen ; Kewen, Liu
Author_Institution :
Wuhan Univ. of Technol., Wuhan
Abstract :
In this paper, a new Rake receiver of the Ultra-wide band (UWB) system with multiple receive antennas is proposed. To economize the system resource, an antenna selection scheme is used. For each selected antenna, the maximal ratio RAKE combination is applied to the multi-path signals. The outputs corresponding to all selected antennas are then combined according to the minimum mean square error (MMSE) criterion. Furthermore, we designed a MMSE equalizer in the time-domain to effectively eliminate the inter-symbol interference. The joint utilization of the antenna selection, RAKE and equalization schemes in the receiver gives the presented system superior performance compared with the existing UWB receivers. Simulation examples based on IEEE 802.15.3a channel model are given.
Keywords :
antennas; equalisers; multipath channels; radio receivers; ultra wideband communication; IEEE 802.15.3a channel model; MMSE equalizer; UWB communications; antenna selection scheme; maximal ratio RAKE combination; minimum mean square error criterion; multipath signals; multiple receive antennas; time-domain equalization; Equalizers; Fading; Interference elimination; Mean square error methods; Multipath channels; RAKE receivers; Receiving antennas; Time domain analysis; Ultra wideband antennas; Ultra wideband communication; MMSE-antenna diversity; MMSE-equalizer; Rake receiver; UWB;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007 International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-1045-3
Electronic_ISBN :
978-1-4244-1045-3
DOI :
10.1109/MAPE.2007.4393572
