Title :
Smart Antennas for MIMO-SDMA- An Overview and Modeling
Author :
Kumar, D. Sriram ; Varma, G. Gopi Krishna
Author_Institution :
Dept. of Electron. & Commun. Eng., Nat. Inst. of Technol., Trichy
Abstract :
Smart/adaptive array antenna can track the unknown interference signal in real time automatically, that is, it can direct antenna pattern with nulls towards the interference and offer gain to the required signal to ensure the required signal reception, so output SINR (signal to Interference and Noise Ratio) is improved. Direction-of-arrival (DOA) estimation is based on the MUSIC algorithm for identifying the directions of the source signals incident on the sensor array comprising the smart antenna system. Adaptive beamforming is achieved using the LMS algorithm for directing the main beam towards the desired source signals and generating deep nulls in the directions of interfering signals.
Keywords :
MIMO communication; adaptive antenna arrays; antenna radiation patterns; direction-of-arrival estimation; least mean squares methods; radiofrequency interference; space division multiple access; LMS algorithm; MIMO; MUSIC algorithm; SDMA; SINR; adaptive array antenna; adaptive beamforming; antenna pattern; direction-of-arrival estimation; interference signal; signal to interference and noise ratio; smart antennas; space division multiple access; Adaptive arrays; Antenna arrays; Direction of arrival estimation; Intelligent sensors; Interference; Multiple signal classification; Sensor arrays; Sensor systems; Signal processing; Signal to noise ratio; Adaptive array; Beamforming; Smart Antenna; antenna;
Conference_Titel :
Recent Advances in Microwave Theory and Applications, 2008. MICROWAVE 2008. International Conference on
Conference_Location :
Jaipur
Print_ISBN :
978-1-4244-2690-4
Electronic_ISBN :
978-1-4244-2691-1
DOI :
10.1109/AMTA.2008.4762967
