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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 5    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 5,May 2012
Interference Reduction and DOA Estimation in GSM Systems
Full Text(PDF, )  PP.1270-1272  
Author(s)
Nsionu I I, Onoh G N, Ekeh J, Eneh I I
KEYWORDS
: Interference Reduction, Adaptive, Uniform Linear Array, Multiple Signal Classification, Direction of Arrival, Multipath
ABSTRACT
This paper considers improvement in the performance of mobile wireless communication through interference reduction in the system. By deploying Adaptive Uniform Linear Arrays in the latest generation of mobile communication systems, it is possible to achieve enhancement in the array output in the direction of a given desired mobile terminal while at the same time suppressing undesired signal from another mobile terminal which may or may not be operating with the same carrier frequency. It is understood that a single signal can have different propagation paths and therefore different directions of arrival at a given receiver. The implication is that for several transmitters, each source potentially creates many multipaths at the receiver which will now have to select from the multiple inputs. There is therefore the need for the system to decipher which sources are present and their possible directions. The data obtained in the process will be used to either eliminate or combine signals for greater fidelity through deliberate signal enhancement or suppression. The technique of Multiple Signal Classification shall be used in this paper to find signal Direction of Arrival. 
References
[1] Frank Gross, “Smart Antennas for Wireless Communications” with Matlab by McGraw-Hill Companies Inc. 2005

[2] Nadeem Ather, “Null Steering and Pattern Control in Smart Antenna Arrays”.

[3] Nikhil Shetty, “Direction of Arrival Estimation Algorithms” April 7 2004

[4] Nsionu I I ,” Improving GSM Network Capacity Using Smart Antenna System” 2012

[5] Ahmed El Zooghby , “Smart Antenna Engineering”, 2005 Artech House Inc. 685 Canton street Norwood, MA USA

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