Essays about: "digital predistortion matlab"
Found 4 essays containing the words digital predistortion matlab.
-
1. Digital Techniques for Compensation of Radio Frequency Impairments in Mobile Communication Terminals
University essay from Elektroniska komponenterAbstract : The 3G and 4G systems make use of spectrum efficient modulation techniques which has variable amplitude. The variable amplitude methods usually use carrier‘s amplitude and phase to carry the message signal. READ MORE
-
2. Digital Predistortion for Broadcast FM repeaters
University essay from KTH/SignalbehandlingAbstract : This thesis presents the design and implementation of a memoryless and adaptive digital predistorter used to linearize a power amplier. Specically, it deals with the implementation of a so-called constantgain predistorter, based on a lookup table, on a digital signal processing board built around an FPGA. READ MORE
-
3. Dynamic nonlinear pre-distortion of signal generators for improved dynamic range
University essay from Institutionen för teknik och byggd miljöAbstract : 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
-
4. Digital predistortion of semi-linear power amplifier
University essay from Institutionen för systemteknikAbstract : In this thesis, a new way of using predisortion for linearization of power amplifiers is evaluated. In order to achieve an adequate power level for the jamming signal, power amplifiers are used in military jamming systems. Due to the nonlinear characteristic of the power amplifier, distortion will be present at the output. READ MORE
