High-Resolution Analysis of Indoor Multipath Propagation Structure

Yasutaka OGAWA  Norihiro HAMAGUCHI  Kohzoh OHSHIMA  Kiyohiko ITOH  

IEICE TRANSACTIONS on Communications   Vol.E78-B    No.11    pp.1450-1457
Publication Date: 1995/11/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Adaptive Signal Processing Technology in Antennas)
multipath propagation,  Fourier transform,  superresolution techniques,  MUSIC algorithm,  

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Analyzing multipath propagation structure is important to develop anti-fading techniques for high-speed digital radio systems. Several techniques have been employed to measure delay profiles and/or arrival angles. This paper presents a simultaneous estimation method of delay times and arrival angles of indoor multipath waves. We obtain frequency-domain data at different receiving antenna positions using a network analyzer. We estimate the propagation parameters by means of a two-dimensional MUSIC algorithm. In order to obtain reliable results, a two-dimensional discrete inverse Fourier transform and a gating technique are employed before the MUSIC algorithm. Simulation and experimental results show that the proposed method can estimate the propagation parameters properly.