Modeling Receiver Properties to Quantify The Receiver Performance

Sivaraj, M. (2016) Modeling Receiver Properties to Quantify The Receiver Performance.

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Abstract:The receiver performance can be limited due to a number of reasons. Desensitization is one of the key issues that degrades the overall performance of the receiver. Desensitization is caused, when strong interferers at the receiver input leading to nonlinear behavior of the receiver front end. Under such conditions, the receiver experiences gain compression, increase in overall noise figure, and distortion products affecting the desired signal, which in turn produces decreased signal to noise ratio (SNR) at the input of the demodulator. For this purpose, behavioral modeling based on empirical measurements on low noise amplifier (LNA) when exposed to out of band blockers (OOB) was developed with a help of MATLAB to investigate the nonlinear behavior and quantify the receiver performance in terms of error vector magnitude (EVM). The model was verified with measurement results. Additionally, EVM was used to predict the SNR of the receiver system and BER performance for different digital modulation schemes under blocker conditions were generated.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology
Programme:Electrical Engineering MSc (60353)
Link to this item:http://purl.utwente.nl/essays/71663
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