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Optimized Interference Canceling for Colocated Base Station Transceivers

Ahmed, Shabbir and Faulkner, Michael (2011) Optimized Interference Canceling for Colocated Base Station Transceivers. IEEE Transactions on Vehicular Technology, 60 (9). pp. 4175-4183. ISSN 0018-9545

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Abstract

Strong jamming signals from colocated transmitters can cause intermodulation and desensitization in receiver circuits. Cancellation circuits can remove interference but generate noise and distortion of their own. We analyze such a system using a signal-to-interference-and-noise ratio (SINR) measure. We show that the cancellation coupler can be optimized to maximize the SINR. The optimum coupler value is proportional to the expected level of the jammers. A hardware prototype reduced the jammers by 46 dB in a controlled experiment and by 25 dB in an over-the-air experiment. A convergence time of 8.4 ms was sufficient for this application.

Item Type: Article
Uncontrolled Keywords: ResPubID23775, colocation, interference suppression, intermodulation distortion, land mobile radio equipment, radio receivers
Subjects: Faculty/School/Research Centre/Department > Centre for Telecommunications and Micro-Electronics (CTME)
FOR Classification > 1005 Communications Technologies
SEO Classification > 8901 Communication Networks and Services
Depositing User: VUIR
Date Deposited: 22 Aug 2012 06:30
Last Modified: 02 Oct 2014 23:31
URI: http://vuir.vu.edu.au/id/eprint/9203
DOI: 10.1109/TVT.2011.2171010
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Citations in Scopus: 4 - View on Scopus

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