Title :
Smart antenna design for beamforming of UWB signals in Gaussian noise
Author :
Mani, V.V. ; Bose, Ranjan
Author_Institution :
Indian Inst. of Technol., New Delhi
Abstract :
The paper looks at the problem of Ultra Wideband (UWB) impulse beamforming using linear array, when the desired signal and several interferences from different directions are received by the antenna array. These signals and interferences are UWB signals having Gaussian power spectral density form. The objective is to suppress the interferences, while keeping the power of desired signal unchanged. In this paper we propose a UWB smart antenna which points its main beam towards prestreed direction of the array and suppresses interference and noise coming from other than the look direction of the array. Antenna weights are calculated adaptively to meet the above conditions. We also analyze the SESfR (Signal to Interference noise ratio) of the array for different interference directions, when the desired signal is coming in prestreed direction. Finally simulation results show the suppression capabilities of the proposed smart antenna.
Keywords :
adaptive antenna arrays; array signal processing; interference suppression; linear antenna arrays; ultra wideband technology; Gaussian noise; Gaussian power spectral density form; UWB signals; UWB smart antenna; antenna array; antenna weights; interference suppression; linear array; smart antenna design; ultra wideband impulse beamforming; Antenna arrays; Array signal processing; Directive antennas; Gaussian noise; Interference suppression; Linear antenna arrays; Receiving antennas; Signal design; Ultra wideband antennas; Ultra wideband technology; Interference; Smart antenna; Tapped Delay line(TDL); Ultra Wideband(UWB); beamforming;
Conference_Titel :
Smart Antennas, 2008. WSA 2008. International ITG Workshop on
Conference_Location :
Vienna
Print_ISBN :
978-1-4244-1756-8
Electronic_ISBN :
978-1-4244-1757-5
DOI :
10.1109/WSA.2008.4475575