Millimeter-wave indoor radio channel with artificial reflector

Experiments of 94-GHz millimeter-wave propagation were carried out in indoor channels, where the propagation path loss and multipath fading are investigated. The results show that the path-loss exponents in the line-of-sight (LOS) and obstructed (OBS) channel are 1.2-1.8 and 3.6-4.1, respectively. The received power of the OBS path is attenuated significantly as compared with that of the LOS path, thereby requiring an additional link-budget margin as well as battery power. In this paper, the use of an artificial reflector is also suggested under OBS conditions in order to avoid significant propagation loss, and then, a comparative study is conducted.

[1]  R. Prasad,et al.  Propagation measurements in an indoor radio environment at 2.4 GHz, 4.75 GHz and 11.5 GHz , 1992, [1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology.

[2]  Gerald Morrison,et al.  The Dependence of Indoor Radio Channel Multipath Characteristics on Transmit/Recieve Ranges , 1993, IEEE J. Sel. Areas Commun..

[3]  Bruce Tuch,et al.  Development of WaveLAN®, an ISM band wireless LAN , 1993, AT&T Technical Journal.

[4]  A. Kajiwara,et al.  Line-of-sight indoor radio communication using circular polarized waves , 1995 .

[5]  A. Kajiwara.  On a circular polarization wave transmission in LOS indoor radio channels , 1994, 5th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Wireless Networks - Catching the Mobile Future..

[6]  Theodore S. Rappaport,et al.  Wireless communications - principles and practice , 1996 .

[7]  R. E. Kell.  On the derivation of bistatic RCS from monostatic measurements , 1965 .

[8]  N. Currie,et al.  Principles and Applications of Millimeter-Wave Radar , 1987 .

[9]  S. Mahmoud,et al.  Indoor radio path loss comparison between the 1.7 GHz and 37 GHz bands , 1993, Proceedings of 2nd IEEE International Conference on Universal Personal Communications.

[10]  Jack H. Winters,et al.  A Wireless Network for Wide-Band Indoor Communications , 1987, IEEE J. Sel. Areas Commun..

[11]  R. S. Cole,et al.  An experimental study of the propagation of 55 GHz millimeter waves in an urban mobile radio environment , 1994 .

[12]  S. Ariyavisitakul.  SIR-based power control in a CDMA system , 1992, [Conference Record] GLOBECOM '92 - Communications for Global Users: IEEE.

[13]  M. Skolnik,et al.  Introduction to Radar Systems , 2021, Advances in Adaptive Radar Detection and Range Estimation.

[14]  J.E. Mitzlaff,et al.  Radio propagation and anti-multipath techniques in the WIN environment , 1991, IEEE Network.

[15]  A. Kajiwara.  Effects of polarization, antenna directivity, and room size on delay spread in LOS indoor radio channel , 1997 .

[16]  Ramjee Prasad,et al.  Effects of Rician faded and log-normal shadowed signals on spectrum efficiency in microcellular radio , 1993 .

[17]  P. Smulders,et al.  Influence of antenna radiation patterns on MM-wave indoor radio channels , 1993, Proceedings of 2nd IEEE International Conference on Universal Personal Communications.

[18]  W.C.Y. Lee.  Spectrum efficiency in inbuilding communications a PCS application , 1993, Proceedings of 2nd IEEE International Conference on Universal Personal Communications.

[19]  M. El-Tanany,et al.  Millimeter-wave channel measurements for indoor wireless communications , 1992, [1992 Proceedings] Vehicular Technology Society 42nd VTS Conference - Frontiers of Technology.

[20]  P. Beckmann,et al.  The scattering of electromagnetic waves from rough surfaces , 1963 .

[21]  T. Ihara,et al.  Effects of antenna directivity on indoor multipath propagation characteristics at 60 GHz , 1995, Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications.

[22]  A. Kajiwara.  Indoor propagation measurements at 94 GHz , 1995, Proceedings of 6th International Symposium on Personal, Indoor and Mobile Radio Communications.