Title :
Noise in smart antennas for mobile communications
Author :
Brauner, T. ; Kung, R. ; Vogt, R. ; Bachtold, W.
Author_Institution :
Swiss Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
In a practical smart antenna different sources of noise exist, such as thermal noise, oscillator phase noise and spurious responses. Furthermore a long-term drift of amplitude and phase response is observed. Each of these effects can be well characterized for a single channel, but the performance of a smart antenna mainly depends on the correlation between the channels. The influence of correlated noise and drift on system performance is discussed and experimental data from a 5-6 GHz smart-antenna testbed is given. The testbed employs an active antenna array and a software-defined radio architecture.
Keywords :
active antenna arrays; adaptive antenna arrays; antenna radiation patterns; aperture antennas; microstrip antenna arrays; mobile antennas; mobile radio; phase noise; software radio; thermal noise; 5 to 6 GHz; active antenna array; aperture-coupled patch antennas; correlated drift; correlated noise; correlation between channels; directional noise pattern; error model; linear antenna array; mobile communications; noise sources; oscillator phase noise; path-to-path correlation; smart antenna; software-defined radio architecture; spurious responses; system performance; thermal noise; Acoustic noise; Antenna arrays; Aperture antennas; Hardware; Linear antenna arrays; Mobile antennas; Mobile communication; Noise level; Phase noise; System performance;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1220151
