Journal ArticleDOI
Polarization dependence of multipath propagation and high-speed transmission characteristics of indoor millimeter-wave channel at 60 GHz
Reads0
Chats0
TLDR
In this article, a computer simulation was made to clarify the polarization dependence of the high-speed transmission characteristics of an indoor communications system operating at 60 GHz in a room within a modern office building.Abstract:
Measurements of polarization dependence of multipath-propagation characteristics were conducted at 60 GHz in a room within a modern office building. Delay profiles were measured using a swept frequency method with a high time-delay resolution of 2 ns. Directions of arrival of the multipath components reflected from walls were analyzed by rotating a narrow-beam receiving antenna with an angular resolution of 5 degrees. Results of this experiment showed that multipath delayed waves due to wall reflection can be effectively suppressed by employing circular polarization instead of linear polarization. Based on this experimental result, a computer simulation was made to clarify the polarization dependence of the high-speed transmission characteristics of an indoor communications system operating at 60 GHz. >read more
Citations
More filters
Dissertation
60 GHz Wireless Propagation Channels: Characterization, Modeling and Evaluation
TL;DR: This thesis focuses on indoor short range wireless propagation channels in the 60 GHz band and contains a collection of papers that characterizes, models and evaluates different aspects that are directly related to the propagation channel properties.
Journal ArticleDOI
Ka-Band Cavity-Backed Detached Crossed Dipoles for Circular Polarization
Xue Bai,Shi-Wei Qu,Run-Liang Xia +2 more
TL;DR: An implementation of circularly polarized crossed dipoles in the millimeter-wave band is presented in this paper, where a metallic ridge is added in the cavity to provide a robust feeding structure.
Proceedings ArticleDOI
RSSI-based indoor tracking using the extended Kalman filter and circularly polarized antennas
TL;DR: A tracking scenario comprising a mobile emitter node moving through an indoor environment covered by multiple anchor receivers is investigated and a localization method based on received signal strength indicators (RSSI) and making use of the extended Kalman filter and circularly polarized antennas is proposed is proposed.
Proceedings ArticleDOI
Influence of the human activity on the propagation characteristics of 60 GHz indoor channels
TL;DR: From these results, some solutions are suggested in order to reduce the shadowing problems of 60 GHz radio links and the influence of the human activity on the propagation characteristics at 60 GHz.
Journal ArticleDOI
Millimeter-Wave Cavity-Backed Patch-Slot Dipole for Circularly Polarized Radiation
Xue Bai,Shi-Wei Qu,Kung Bo Ng +2 more
TL;DR: A novel millimeter-wave antenna for circularly polarized (CP) radiation is presented, and it is realized by a plated through hole printed technique on a microwave substrate with good directional radiation patterns and low fabrication cost.
References
More filters
Journal ArticleDOI
On the use of windows for harmonic analysis with the discrete Fourier transform
TL;DR: A comprehensive catalog of data windows along with their significant performance parameters from which the different windows can be compared is included, and an example demonstrates the use and value of windows to resolve closely spaced harmonic signals characterized by large differences in amplitude.
Journal ArticleDOI
Wide-band microwave propagation parameters using circular and linear polarized antennas for indoor wireless channels
TL;DR: Results show that line-of-sight (LOS) channels offer significantly more cross-polarization discrimination than obstructed channels and directional circularly polarized antennas always reduce RMS delay spread when compared to omnidirectional and directional linearly polarized antennas in LOS.
Journal ArticleDOI
Wideband indoor radio propagation measurements at 58 GHz
P.F.M. Smulders,A.G. Wagemans +1 more
TL;DR: In this paper, the results of wideband measurements of indoor radio channels operating in a 2 GHz frequency band centred around 58 GHz were performed using a frequency step sounding technique and the results were presented of cell coverage and RMS delay spreas under both line-of-sight (LOS) and obstructed (OBS) situations.
Proceedings ArticleDOI
Wireless propagation measurements in indoor multipath environments at 1.7 GHz and 60 GHz for small cell systems
TL;DR: In this article, the authors describe wideband measurements which have been conducted in a variety of indoor locations and use RMS (root mean square) delay spreads to compare levels of multipath activity at the two frequencies.
Journal ArticleDOI
Bit rate performance of millimetre-wave indoor radio systems
P.F.M. Smulders,H.T. Muskens +1 more
TL;DR: The performance of an ideal quaternary PSK (QPSK.) modem operating on a 58 GHz indoor radio channel is evaluated and the performance improvement achievable with antenna diversity is indicated.