The market for driver assistance systems based on millimeter-wave radar sensor technology is gaining momentum. In the near future, the full range of newly introduced car models will be equipped with radar based systems which leads to high volume production with low cost potential. This paper provides background and an overview of the state of the art of… (More)
—A novel stochastic channel model for the indoor propagation channel is presented. It is especially for, but not limited to future communication systems with multiple antennas like space division multiple access (SDMA), spatial filtering for interference reduction (SFIR), or multiple-input/multiple-output (MIMO). The model is designed for indoor scenarios,… (More)
—In this paper, a wideband channel sounder and measurement results for the short range indoor 60 GHz channel are presented. The channel sounder is based on a 1 gigasamples/s dual channel arbitrary waveform generator and A/D converter/software demodulator, which synthesize and detect a baseband PN sequence with 500 MHz bandwidth. A heterodyne transmitter and… (More)
Any opinions expressed here are those of the author(s) and not those of the institute. Research disseminated by IZA may include views on policy, but the institute itself takes no institutional policy positions. The Institute for the Study of Labor (IZA) in Bonn is a local and virtual international research center and a place of communication between… (More)
— This paper describes a model for mobile radio channels that includes consideration of directions of arrival and is thus suitable for simulations of the performance of wireless systems that use smart antennas. The model is specified for 13 different types of environments, covering macro-micro-and picocells. In this paper, a hierarchy of modeling concepts… (More)
We report a static frequency divider designed in a 210 GHz f/sub T/, 0.13 /spl mu/m SiGe bipolar technology. The circuit consumes about 44 mA per latch (140 mA total for the chip, with input-output stages) from a -5.5 V power supply and operates up to 96.6 GHz.
A prototype design of a 2.7 V, 14.5 mA SiGe direct-conversion receiver IC for use in 3G WCDMA mobile cellular systems has been completed and measured. The design includes a bypassable LNA, a quadrature downconverter, and variable gain baseband amplifiers integrated on chip. The static sensitivity performance of the receiver IC is characterized using a… (More)
—In this paper the possibility of designing an OFDM system for simultaneous radar and communications operations is discussed. A novel approach to OFDM radar processing is introduced that overcomes the typical drawbacks of correlation based processing. A suitable OFDM system parameterization for operation at 24 GHz is derived that fulfills the requirements… (More)