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The performance of the general adaptive array beamforming algorithm is known to declined severely in the presence of array imperfections and uncertainties. So the robustness of adaptive array beamforming techniques against uncertainties is one of the important issues. In the situation of array amplitude and phase errors, signal steering errors and other data mismatch, this paper put forward a new...
The quality of mobile communications have been severely affected by interference among users in TD-SCDMA, in allusion to this problem, the smart antenna adaptive beam-forming algorithm are researched deeply in the thesis. According to the technical features that smart antenna can adaptive track the user signals realize the design and simulation of smart antenna in interference suppression, and compare...
The signal reaching the GPS receiver is very weak and well below the noise floor, hence be sensitive to any interference. In the strong interference environment, the conventional approach of processing GPS signal fails. In this paper, the recursive least-squares-version (RLS-version) algorithm for suppressing the strong interference based on the minimum-variance distortionless response (MVDR) criterion,...
Smart antenna is recognized as promising technologies for higher user capacity in 3G wireless networks by effectively reducing multipath and co-channel interference. Advent of powerful, low-cost, digital processing components and the development of software-based techniques has made smart antenna systems a practical reality for both base station and mobile station of a cellular communications systems...
Global position system (GPS) adaptive array antenna forms null beam to suppress the interference in order to communicate normally. The nulling beamforming model is actually an optimization technique. Because the traditional adaptive algorithms usually obtain the partial optimum solution, in this letter, we propose adaptive ant colony algorithm (AACA) can find the desired solution which is a global...
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