Title :
Mutual coupling effect on thermal noise in multi-antenna wireless communication systems
Author :
Krusevac, Snezana ; Rapajic, Predrag B. ; Kennedy, Rodney A. ; Sadeghi, Parastoo
Author_Institution :
Sch. of Electr. Eng. & Telecommun., New South Wales Univ., Sydney, NSW
Abstract :
This paper presents a framework for the thermal noise analysis of mutually-coupled antennae in the multi-antenna system. The electromagnetic coupling for thermal noise is included in the analysis of the multi-antenna system with small antenna element spacings. The method for thermal noise power calculation for the multi-antenna system with coupled antennae is presented. The thermal noise behavior in the multi-antenna system is determined by applying the Nyquist´s thermal noise theorem. The partial correlation of thermal noise for antenna spacing lower then a wavelength is confirmed. The signal-to-noise ratio (SNR) for the closely spaced antennae in the multi-antenna system is then estimated, using presented method for thermal noise analysis. Simulation results confirm that as the antenna spacing decreases to zero, the multi-antenna system starts to act like a single antenna system
Keywords :
antenna arrays; electromagnetic coupling; radiocommunication; thermal noise; Nyquist thermal noise theorem; SNR; antenna spacing; electromagnetic coupling; multiantenna wireless communication systems; mutual coupling effect; mutually-coupled antennae; signal-to-noise ratio; thermal noise analysis; Antenna arrays; Automatic logic units; Communication systems; MIMO; Multipath channels; Mutual coupling; Receiving antennas; Signal to noise ratio; Transmitters; Wireless communication; Mutual Coupling; multi-antenna system; thermal noise;
Conference_Titel :
Communications Theory Workshop, 2005. Proceedings. 6th Australian
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7803-9007-5
DOI :
10.1109/AUSCTW.2005.1624253
