TY - JOUR
T1 - A USRP-Based Multi-Antenna Testbed for Reception of Multi-Site Cellular Signals
AU - Izydorczyk, Tomasz Stanislaw
AU - Tavares, Fernando Menezes Leitão
AU - Berardinelli, Gilberto
AU - E. Mogensen, Preben
PY - 2019
Y1 - 2019
N2 - This paper presents a design of a Software Defined Radio (SDR) multi-antenna testbed able to record live cellular signals from multiple sites. This measurement setup based on Universal Software Radio Peripheral (USRP) boards, is used to record live Long Term Evolution (LTE) signals in sub-6 GHz frequency bands. Due to recording of raw IQ samples, this fully digital testbed is suitable for variety of research activities spanning channel characterization and beamforming performance evaluation. We propose a phase calibration method based on transmission of a single out of band tone to overcome the uncertainty introduced by the USRP's lack of phase alignment. We demonstrate two use cases where the proposed testbed can be used and we validate its performance during two measurement campaigns with self-generated and real cellular signals.
AB - This paper presents a design of a Software Defined Radio (SDR) multi-antenna testbed able to record live cellular signals from multiple sites. This measurement setup based on Universal Software Radio Peripheral (USRP) boards, is used to record live Long Term Evolution (LTE) signals in sub-6 GHz frequency bands. Due to recording of raw IQ samples, this fully digital testbed is suitable for variety of research activities spanning channel characterization and beamforming performance evaluation. We propose a phase calibration method based on transmission of a single out of band tone to overcome the uncertainty introduced by the USRP's lack of phase alignment. We demonstrate two use cases where the proposed testbed can be used and we validate its performance during two measurement campaigns with self-generated and real cellular signals.
KW - Antennas and propagation
KW - SDR
KW - USRP
KW - beam steering
KW - measurement techniques
KW - multi-antenna
UR - http://www.scopus.com/inward/record.url?scp=85075606306&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2019.2952094
DO - 10.1109/ACCESS.2019.2952094
M3 - Journal article
SN - 2169-3536
VL - 7
SP - 162723
EP - 162734
JO - IEEE Access
JF - IEEE Access
M1 - 8894135
ER -