Henry Chen (Advisor), Marian Kazimierczuk (Committee Member), Brian Rigling (Other), Yan Zhuang (Committee Member)
Master of Science in Engineering (MSEgr)
Wide working bandwidth is one of the main concerns in digital wideband receiver. The traditional digital receiver covers only one Nyquist zone, which bandwidth range is from DC to half of the sampling frequency. By utilizing in-phase/quadrature (I/Q) channels, wideband receiver is able to double the working bandwidth, which covers from DC to half of the sampling frequency and also from negative half of the sampling frequency to DC. However, I/Q mismatch in reality introduces unwanted signals, which significantly reduce the system performance and the quality of the received signals. In this thesis, an adaptive I/Q mismatch compensation technique is presented. A finite impulse response filter is developed, and then the filter coefficients are further optimized to suppress the image signal. The novel and feasible adaptive digital signal processing method has been found to suppress the image signal by 46 - 59.84 dB in comparison with that of the original I/Q channel.
Department or Program
Department of Electrical Engineering
Year Degree Awarded
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