A comparison of indoor radio propagation characteristics at 910 MHz and 1.75 GHz

• Published in: IEEE journal on selected areas in communications 1989-01, Vol.7 (1), p.20-30
• Main Authors: Bultitude, R.J.C., Mahmoud, S.A., Sullivan, W.A.
• Format: Article
• Language: English
• Subjects: Applied sciences; Buildings; Concrete; Cyclic redundancy check; Delay; Exact sciences and technology; Fading; Frequency; Indoor radio communication; Laboratories; Propagation through the atmosphere; Radiocommunications; Radiowave propagation; Statistical distributions; Telecommunications; Telecommunications and information theory; Wideband
• ISSN: 0733-8716; 1558-0008
• DOI: 10.1109/49.16840

The results of temporally and spatially distributed wideband (impulse response) propagation experiments in the 900 MHz and 1.7 GHz radio frequency bands in two different buildings on fixed indoor radio links are reported. Results from the temporal experiments show that, for a specific location in either of the two buildings, the dynamics of indoor channels are slightly less random at 910 MHz than at 1.7 GHz. It is believed that this would result in marginally better performance on a given transmit/receive link in the 900 MHz band. The spatially distributed measurements showed that the structures of average impulse-response envelopes differed for channels in the two buildings. In one building, RMS delay spreads were slightly greater in the 1.7 GHz band for over 90% of transmit/receive link configurations. In the other building, RMS delay spreads were marginally greater in the 900 MHz band for 70% of the configurations.< >