Title :
Simple -steering OFDM adaptive array antenna for Doppler-shifted signal suppression
Author :
Hara, Shinsuke ; Hane, Shuichi ; Hara, Yoshitaka
Author_Institution :
Dept. of Electron., Osaka Univ., Japan
Abstract :
A new -steering method to suppress Doppler-shifted signals is proposed for orthogonal frequency-division multiplexing adaptive array antenna. The proposed array antenna has a simple structure and can steer s for interfering signals even with small Doppler shifts by forcing virtual subcarrier outputs to be zero. A multistep recursive least-square algorithm is proposed to control the array weights and the bit-error rate and antenna pattern are evaluated by computer simulation.
Keywords :
Doppler shift; OFDM modulation; adaptive antenna arrays; antenna radiation patterns; array signal processing; error statistics; interference suppression; least squares approximations; recursive estimation; -steering OFDM adaptive array antenna; Doppler-shifted signal suppression; antenna pattern; bit-error rate; multistep recursive least-square algorithm; orthogonal frequency-division multiplexing; Adaptive arrays; Antenna arrays; Bit error rate; Data communication; Doppler shift; Frequency division multiplexing; OFDM; TV broadcasting; Weight control; Wireless LAN;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2004.838834
