Zobrazeno 1 - 10
of 641
pro vyhledávání: '"W. Wiesbeck"'
Publikováno v:
Advances in Radio Science, Vol 5, Pp 379-384 (2007)
This paper analyzes the effect of a change in cell size and of transmit power control on the human exposure to electromagnetic fields. In a simplified network configuration the well accepted COST-Hata model is considered to assess the path loss. It i
Externí odkaz:
https://doaj.org/article/ed5c6fe7401d4680885c222e85fcbec0
Publikováno v:
Advances in Radio Science, Vol 2, Pp 141-146 (2004)
This paper shows the potential of MIMO in cellular systems, where small handheld devices are used for the terminals. A complete model of a MIMO communication link is used to integrate accurate antenna modelling into MIMO system simulations. All diffe
Externí odkaz:
https://doaj.org/article/f46b89f55d9f425cabdd19cdba8515f0
Publikováno v:
IEEE Geoscience and Remote Sensing Letters. 10:568-572
In this letter, we present a new waveform technique for the use of multiple transmitters in synthetic aperture radar (SAR) data acquisition. This approach is based on the principle of the orthogonal-frequency-division-multiplexing technique. Unlike m
Autor:
W. Wiesbeck, Christian Sturm
Publikováno v:
Proceedings of the IEEE. 99:1236-1259
Since traditional radar signals are “unintelligent,” regarding the amount of information they convey on the bandwidth they occupy, a joint radar and wireless communication system would constitute a unique platform for future intelligent transport
Publikováno v:
IEEE Vehicular Technology Magazine. 6:54-62
The fast and economical prototype development of (vehicular) antenna systems requires the employment of feasible simulators. This article describes such a simulator for vehicular communications. The channel model used is based on stochastically or de
Publikováno v:
IEEE Transactions on Antennas and Propagation. 58:279-286
A compact dual-polarized antenna is described for ultrawideband (UWB) applications. The main features of the antenna, besides an ultrawidebandwidth are low cross-polarization and small dimensions. The feed of the antenna is based on the tapered slot
Publikováno v:
Proceedings of the IEEE. 97:372-385
Basic principles for ultra-wide-band (UWB) radiation are presented and discussed in this paper. The discussion starts with a description of the influence of antennas on UWB transmission. The parameters characterizing antennas in time and in frequency
Publikováno v:
IEEE Transactions on Antennas and Propagation. 54:3125-3137
Three-dimensional (3-D) ray tracing has advanced to such a degree that it can provide channel parameters like delay spread, Doppler spread, angular spread, and distribution functions of long- and short-term fading with high accuracy for fixed to mobi
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 44:2629-2634
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 43:2410-2417