Essays about: "IQ imbalance"

Found 3 essays containing the words IQ imbalance.

  1. 1. Methods of self-interference cancellation in full duplex telecommunication systems

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Henrik Erlandsson; Viktor Sköldheden; [2021]
    Keywords : telecommunication; full duplex; self-interference cancellation; electronics; wireless communication; power amplifier;

    Abstract : With the wireless technology evolving quickly, so does the demand of speed and efficiency. This makes the companies look for new and better ways to improve the current systems. One way of improving the present systems would be to employ Full Duplex Technology. READ MORE

  3. 2. Digital Methods for Reduction of IQ Imbalance in OFDM Systems

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Daxious Mengistu Wendemu; [2010]
    Keywords : IQ imbalance; least square LS ; least mean algorithm LMS ; OFDM;

    Abstract : Orthogonal frequency division multiplexing (OFDM) based systems are susceptible to radio front end induced impairments. These impairments caused by as a consequence of imbalances in the In-phase (I) and Quadrature-phase (Q) branches. IQ imbalances are worries to be addressed for the Superhetrodyne and the zero IF architectures in analog domain. READ MORE

  4. 3. Dynamic nonlinear pre-distortion of signal generators for improved dynamic range

    University essay from Institutionen för teknik och byggd miljö

    Author : Suzan Jawdat; [2009]
    Keywords : Predistortion; IQ imbalance; Predistortion mirror distortion; Power amplifier deficiencies; Parsimonious predistorter structures; Predistorter properties; Training of the predistorter based on N-sequences of data.;

    Abstract : In this thesis, a parsimoniously parameterized digital predistorter is derived for linearization of the IQ modulation mismatch and the amplifier imperfection in the signal generator [1]. It is shown that the resulting predistorter is linear in its parameters, and thus they may be estimated by the method of least-squares. READ MORE