| dc.description.abstract | Localization and location aware systems are expected to be counted as one of the main services
of 5G millimeter wave (mmWave) communication systems. mmWave communication
systems are offering a large bandwidth from 30-300 GHz frequency band along with low
latency communications. Although, they use massive number of antennas at their transmitters
and receivers, their transceivers occupy a very small area, in order of centimeters.
These features make 5G mmWave communication systems an exceptional candidate for
the localization services. However, mmWave suffers from some limitations such as high
vulnerability to the environment and hardware deficiency.
The hardware used in mmWave system’s transceivers including power amplifiers and
analog/digital converters, cannot be manufactured perfectly as of high costs. Therefore, it
is highly probabilistic to see a non-linear behavior coming out of the mmWave transceivers,
known as hardware impairments (HWIs). HWIs is generally caused as a result of nonlinearity
of transmitter power amplifier and receiver low noise amplifier (LNA) as well as
analog to digital (ADC) and digital to analog converters (DAC). Moreover, HWIs is the
general form of phase noise and In/Quadrature phase (I/Q) imbalance. Because of the
mmWave’s nature, even a slight shortcoming can cause severe effects on its performance.
This thesis investigates the possible effects of HWIs on the user localization error bounds.
Towards that and focusing on line-of-sight (LOS) path, we derive the Cramer-Rao Lower
Bound (CRLB) for the user equipment (UE)’s location and orientation by starting with
a conventional two dimension (2D) scenario and then, we extend it to the realistic three
dimensional (3D) scenario. [...] | en_US |
