Software-Defined Radio Testbed for 6G Research
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Författare
Typ
Examensarbete på kandidatnivå
Bachelor Thesis
Bachelor Thesis
Program
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
As the demand on speed, coverage and bandwidth continues to increase for wireless
communications, the sixth generation of mobile networks builds on and extends
existing technologies. There is a testbed at Chalmers University of Technology focusing
on the promising technology of distributed multiple input multiple output
(D-MIMO). This project aims at assisting the D-MIMO testbed by constructing a
flexible user equipment based on a software defined radio. Specifically, this is done
by configuring the USRP B205mini-i, a universal software radio peripheral (USRP)
from Ettus Research, in MATLAB to fully utilize its capabilities in signal processing
and wireless communication. Trough simulations in MATLAB and physical testing
of both wired and wireless transmissions, several key aspects are evaluated: the maximum
bandwidth and its limitations on data rate, the relationship between signal
duration and the on-board memory of the USRP, and the possibility of synchronizing
multiple USRPs. Results show a maximum bandwidth of 41.24 MHz and a
symbol rate of 10.31 Msym/s. Moreover, the result does not show a strict limitation
on the signal duration as the USRP seems to stream data directly to and from
the host computer. Synchronization is possible between two USRPs with a precision
of a few microseconds at best. The USRP B205mini-i proves to be a flexible
and cost-effective candidate for UE in the D-MIMO testbed. However, performance
enhancements, such as lower-level configuration via FPGA programming, may be
necessary depending on future system requirements.
Beskrivning
Ämne/nyckelord
distributed MIMO, software-defined radio, USRP, 6G, wireless communication, signal processing, synchronization, testbed