Title :
Space-time-block-coded OFDM systems with transmit beamformers for high-speed indoor wireless communications
Author :
Kuo-Hui Li ; Ingram, M.A.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A beamforming network and several beam selection schemes are considered for the transmitter for a space-time-block-coded OFDM system in a high-speed TDMA/TDD QPSK indoor wireless network at 5.7 GHz. By simulating two statistical propagation models, we find that the proposed system with a 24-beam antenna for coherent and differential detection can gain 5 dB and 6 dB SNR improvements relative to the use of omnidirectional antennas at the transmitter, respectively, at a BER of 10/sup -5/.
Keywords :
OFDM modulation; adaptive antenna arrays; array signal processing; differential detection; digital simulation; diversity reception; error statistics; indoor radio; microwave propagation; modulation coding; multiuser channels; quadrature phase shift keying; statistical analysis; time division multiple access; transmitting antennas; 5.7 GHz; BER; SHF; SNR; TDMA/TDD QPSK indoor wireless network; base station; beamforming network; coherent detection; differential detection; diversity gain; frequency-selective channel; high-speed indoor wireless communications; mobile radio; omnidirectional antennas; partial channel information; simulation; space-time-block-coded OFDM systems; statistical propagation models; transmit beamformers; transmitter; Antennas and propagation; Array signal processing; Bit error rate; Gain; OFDM; Quadrature phase shift keying; Time division multiple access; Transmitters; Transmitting antennas; Wireless networks;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.883306
