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Time‐ and Frequency‐Domain Characterizations of Multipath Propagation at 910 MHz in a Suburban Mobile‐Radio Environment
Author(s) -
Cox D. C.
Publication year - 1972
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs007i012p01069
Subject(s) - multipath propagation , delay spread , bandwidth (computing) , radio spectrum , amplitude , terrain , frequency domain , acoustics , radio propagation , environmental science , telecommunications , physics , computer science , optics , geography , channel (broadcasting) , cartography , computer vision
Time‐ and frequency‐domain statistics are presented for multipath propagation in a suburban mobile‐radio environment for vehicle‐travel distances on the order of 30 m. These statistics were obtained by measuring the quadrature components of the bandpass impulse response for the medium as a measuring vehicle was driven along the streets. For suburban residentialand commercial areas on relatively flat terrain, the delay spread is generally less than 1/4 μsec, and the correlation bandwidth at .9 correlation is greater than 250 kHz. Some extreme areas exhibit multiple‐propagation paths with significant amplitudes at excess delays of 5 to 7 μsec, (delay spreads of 2 μsec) and associated correlation bandwidths as low as 40 kHz.