Title :
Adaptive modulation for multiple antenna systems
Author :
Sebastian, P. ; Sampath, H. ; Paulraj, A.
Author_Institution :
Inf. Syst. Lab., Stanford Univ., CA, USA
fDate :
Oct. 29 2000-Nov. 1 2000
Abstract :
We present a simple adaptive modulation scheme for multiple antenna systems. Assuming a linear MMSE receiver and a QoS requirement, we show how to use the signal to interference and noise ratio (SINR) information at the receiver output to optimize the data rate for each transmit antenna. Next, we present an iterative adaptive modulation scheme that provides better throughput when compared to the previous scheme, but takes a hit in implementation complexity. We assume perfect channel knowledge at the receiver and the existence of some minimal feedback link to the transmit antennas.
Keywords :
adaptive modulation; antenna arrays; fading channels; feedback; iterative methods; least mean squares methods; optimisation; radio receivers; radiofrequency interference; transmitting antennas; QoS; SINR; adaptive modulation; data rate optimization; flat fading channel; implementation complexity; iterative adaptive modulation algorithm; linear MMSE receiver; minimal feedback link; multiple antenna systems; perfect channel knowledge; receiver output; signal to interference and noise ratio; throughput; transmit antennas; Adaptive arrays; Antenna feeds; Feedback; Interference; Multiaccess communication; Receiving antennas; Signal to noise ratio; Throughput; Transmitters; Transmitting antennas;
Conference_Titel :
Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-6514-3
DOI :
10.1109/ACSSC.2000.911007
