Title :
Beamforming vs. transmit diversity in the downlink of a cellular communications system
Author :
Friedlander, Benjamin ; Scherzer, Shimon
Author_Institution :
Dept. Electr. Eng., California Univ., Santa Cruz, CA, USA
Abstract :
Transmit diversity and beamforming are two complementary techniques for using multiple antennas in the forward link of a cellular communication system. The first provides the benefit of diversity with no array gain, while the second provides array gain, but no diversity. We present a comparative analysis of the two systems, using outage capacity as the performance measure. The effects of handoff and correlated fading are considered.
Keywords :
antenna arrays; array signal processing; cellular radio; channel capacity; correlation methods; diversity reception; fading channels; radio links; transmitting antennas; array gain; beamforming; cellular communications system; correlated fading; downlink; forward link capacity; handoff; multiple antennas; outage capacity; performance measure; transmit diversity; Antenna arrays; Antenna measurements; Array signal processing; Diversity reception; Downlink; Fading; Mobile antennas; Receiving antennas; Signal to noise ratio; Transmitting antennas;
Conference_Titel :
Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-7147-X
DOI :
10.1109/ACSSC.2001.987648
