Title :
Preliminary measurement results from an adaptive antenna array testbed for GSM/UMTS
Author :
Mogensen, Preben E. ; Pedersen, Klaus I. ; Leth-Espensen, Poul ; Fleury, Bernard ; Frederiksen, Frank ; Olesen, Kim ; Larsen, Steen Leth
Author_Institution :
Center for Personkommunikation, Aalborg Univ., Denmark
Abstract :
This paper presents preliminary measurement results for an 8 element adaptive antenna array in an urban environment. The results show that in most cases the received signal consists of a single narrowly scattered component impinging from the direction towards the mobile. The angular spread (AS) is found to be no larger than 5 degrees for the test measurements. The correlation coefficient between slow fading and AS is -0.56, indicating that the AS increases when the local signal strength fades. The paper also shows the results for a direction of arrival (DoA) algorithm, which is designed for downlink beamsteering in a GSM related system. The results indicate that an averaging window size of one SACCH frame (0.48 s) is a wise choice for DoA estimation in a non-FH network
Keywords :
adaptive antenna arrays; antenna testing; array signal processing; cellular radio; correlation methods; direction-of-arrival estimation; fading; radio links; DoA algorithm; DoA estimation; GSM/UMTS; adaptive antenna array testbed; angular spread; averaging window size; correlation coefficient; direction of arrival; downlink beamsteering; local signal strength; measurement results; narrowly scattered component; nonFH network; received signal; slow fading; test measurements; urban environment; Adaptive arrays; Algorithm design and analysis; Antenna arrays; Antenna measurements; Direction of arrival estimation; Downlink; Fading; GSM; Scattering; Testing;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.605826
