Title :
LMS Beamforming Using Pre and Post-FFT Processing for OFDM Communication Systems
Author :
Heakle, Mohamed S. ; Mangoud, Mohab A. ; Elnoubi, Said
Author_Institution :
Telecomm Egypt Co., Cairo
Abstract :
The adaptive array antenna is combined with OFDM "orthogonal frequency division multiplexing" as multicarrier technique to combat the flat and frequency selective fading effects at high speed wireless communication. In this paper an optimum weight sets beat informer at time and frequency domain were obtained based on LMS algorithm. Different aspects of these systems were investigated such as different values of delay spread, angle of arrival of interfering sources and number of array elements.
Keywords :
OFDM modulation; adaptive antenna arrays; fading; frequency selective surfaces; least mean squares methods; LMS beamforming; OFDM; adaptive array antenna; flat fading effects; frequency selective fading effects; least mean square; multicarrier technique; orthogonal frequency division multiplexing; Adaptive arrays; Adaptive systems; Antenna arrays; Array signal processing; Delay; Fading; Frequency domain analysis; Least squares approximation; OFDM; Wireless communication; LMS beamforming; OFDM; adaptive array antenna;
Conference_Titel :
Radio Science Conference, 2007. NRSC 2007. National
Conference_Location :
Cairo
Print_ISBN :
977-5031-86-9
DOI :
10.1109/NRSC.2007.371352
