Title :
Low Complexity Adaptive Modulation for 802.11N Beamforming Systems
Author :
Xia, Pengfei ; Niu, Huaning ; Ngo, Chiu Y.
Author_Institution :
Samsung Electron., San Jose, CA
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
We study transmit beamforming in IEEE 802.11n systems, where perfect channel state information is available at the transmitter. We first derive the achievable diversity order on each eigenmode. It is found that these eigenmodes are almost Gamma distributed for small number of antennas, which is the typical configuration for IEEE 802.11n systems. Finally, we develop a tight lower- and upper-bound to the average bit error rate performance over each eigenmode.
Keywords :
adaptive modulation; adaptive signal processing; array signal processing; communication complexity; diversity reception; eigenvalues and eigenfunctions; error statistics; gamma distribution; wireless LAN; wireless channels; Gamma distribution; IEEE 802.11n systems; WLAN; bit error rate performance; channel state information; diversity order; eigenmodes; low complexity adaptive modulation; transmit beamforming; transmitter; Array signal processing; Bit error rate; Channel state information; Covariance matrix; MIMO; Optical modulation; Receiving antennas; Throughput; Transmitters; Wireless LAN;
Conference_Titel :
Signals, Systems and Computers, 2006. ACSSC '06. Fortieth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
1-4244-0784-2
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2006.354836
