Title :
Indoor channel characterisation measurements with directional antennas for future high frequency ATM wireless access systems
Author :
Sun, Y. ; Hafezi, P. ; Nix, A. ; Beach, M.
Author_Institution :
Centre for Commun. Res., Bristol Univ., UK
Abstract :
This paper presents a selection of wideband channel sounding measurements performed as part of the ACTS AWACS (ATM Wireless Access Communications System) project. The results were obtained for two different indoor operating environments (mainly in line-of-sight conditions) at a carrier frequency of 19.37 GHz. The paper discusses the configuration of the wideband channel sounder and its connection to the prototype ATM transmission system. Measurements concentrate on average power, RMS delay spread and K-factor for a number of different antenna configurations and beamwidths. Mixed antenna configurations are also analysed with a directive antenna at the base station and an omni antenna at the mobile station. In particular, the results demonstrate the improvement in K-factor and the reduction in RMS delay spread that can be achieved with correctly oriented high gain antennas
Keywords :
asynchronous transfer mode; delays; directive antennas; indoor radio; microwave antennas; microwave links; microwave measurement; microwave propagation; power measurement; subscriber loops; telecommunication channels; wireless LAN; 19.37 GHz; ACTS AWACS project; ATM Wireless Access Communications System; HF ATM wireless access systems; K-factor; RMS delay spread; SHF; antenna beamwidths; antenna configurations; average power; base station; carrier frequency; directional antennas; directive antenna; high gain antennas; indoor channel characterisation measurements; indoor operating environments; line-of-sight conditions; mobile station; omnidirectional antenna; prototype ATM transmission system; wideband channel sounder; wideband channel sounding measurements; wireless LAN; Antenna measurements; Delay; Directive antennas; Frequency; Mobile antennas; Performance evaluation; Power measurement; Prototypes; Wideband; Wireless communication;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.624388
