Multipath Propagation Measurements in Radio Links at 40 Ghz
نویسندگان
چکیده
The results of a measurement campaign conducted to determine the wideband behaviour of the radio channel assigned to Multimedia Wireless Systems are described in this paper. It has been found that small multipath components are present in the impulsive response of radio channels operating at 40 GHz with 80 MHz bandwidths. Multipath and delay spread are limited by the spatial filtering of directive antennas used in MWS and the low reflection coefficient of building materials at these frequencies.
منابع مشابه
Peer - to - Peer Low Antenna Outdoor Radio Wave Propagation at 1 . 8 Ghz
In this outdoor propagation study, low antenna heights of 1. 7 m are used at both the transmitter and the receiver to measure wideband (100 MHz baseband) power-delay profiles (PDPs) of the channel for a peer-to-peer communications system operating at 1.8 GHz. Rural and urban areas are studied in 22 different transmitter-receiver links, and the path loss and delay spread characteristics are pres...
متن کاملCellular & Peer-to-Peer Wireless Communications
As the cost of massively broadbandTM semiconductors continue to be driven down at millimeter wave (mm-wave) frequencies, there is great potential to use LMDS spectrum (in the 28 – 38 GHz bands) and the 60 GHz band for cellular/mobile and peer-to-peer wireless networks. This work presents urban cellular and peer-to-peer RF wideband channel measurements using a broadband sliding correlator channe...
متن کاملEffects of multipath propagation on the design and operation of line-of-sight digital fixed wireless systems
Scope This Recommendation provides an introduction to propagation-related aspects of the design and operation of digital radio-relay systems, drawing on information from Radiocommunication Study Group 3 texts and measurements conducted by administrations. Annex 1 explains the role of multipath fading as the dominant propagation factor for digital radio-relay systems operating at frequencies bel...
متن کاملINDOOR WIDEBAND RADIO PROPAGATION MEASUREMENT SYSTEM AT 1.3 GHz AND 4.0 GHz
This paper describes the development and operation of a dual-band time~domain radar system used to measure indoor multipath propagation characteristics in several office buildings and factories. The system operates at 1.3 GHz and 4.0 GHz, and uses 4 ns rms pulses to provide estimates of indoor radio channel impulse responses. The effects of ante.nna diversity, .frequency scaling, and topography...
متن کاملModeling the Multipath Cross-Polarization Ratio for Above-6 GHz Radio Links
In this paper, we parameterize an excess loss-based multipath component (MPC) cross-polarization ratio (XPR) model in indoor and outdoor environments for above-6 GHz frequency bands. The results are based on 28 measurement campaigns in several frequency bands ranging from 15 to 80 GHz. A conventional XPR model of an MPC assuming a constant mean value fits our measurements very poorly and moreov...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002