Title :
A novel transmit beamforming scheme for BER improvement in EIRP constrained UWB systems
Author :
Han, Shou ; Cheng, Xiantao ; Wu, Gang ; Yue, Guangrong
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Signal design at the transmitter of Ultra-wideband (UWB) communications system is restricted by their equivalent isotropic radiated power (EIRP) criterion rather than the total transmitted power constraints. This paper investigates three schemes based on antenna selection, scaled eigen-beamforming, and the soft-clipping-based method, respectively. By analyzing signal-to-noise power ratio (SNR) of three schemes mentioned above, this paper proposes a novel combination of the three methods to further improve the BER performance while obeying EIRP criterion. Finally, simulation results are presented to verify the proposed scheme.
Keywords :
array signal processing; eigenvalues and eigenfunctions; error statistics; microwave antennas; ultra wideband communication; BER; EIRP constrained UWB systems; antenna selection; equivalent isotropic radiated power criterion; frequency 3.168 GHz to 10.560 GHz; scaled eigenbeamforming; signal design; signal-to-noise power ratio analysis; soft-clipping-based method; total transmitted power constraints; transmit beamforming scheme; transmitter; ultrawideband communication system; Array signal processing; Bit error rate; Receiving antennas; Signal to noise ratio; Transmitting antennas; Vectors; BER; EIRP; UWB; beamforming;
Conference_Titel :
Wireless Communications and Signal Processing (WCSP), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4577-1009-4
Electronic_ISBN :
978-1-4577-1008-7
DOI :
10.1109/WCSP.2011.6096726
