Title :
Tunnel Propagation Channel Characterization for DSRC Applications
Author :
Ching, Gilbert Siy ; Ghoraishi, Mir ; Lertsirisopon, Navarat ; Takada, Jun-ichi ; Sameda, Itoji ; Soma, Ryuji ; Sakamoto, Hironori ; Imai, Tetsuro
Author_Institution :
Dept. of Int. Dev. Eng., Tokyo Inst. of Technol., Tokyo
Abstract :
The propagation channel characteristics of a transportation tunnel for DSRC applications is discussed. One problem in DSRC applications is that the received power in the adjacent (non-coverage) zone can be higher than the maximum allowed threshold. To identify its cause, a wideband directional channel sounding was conducted inside the tunnel. From the sounding data, the propagation path parameters are estimated by a multidimensional maximum likelihood estimation algorithm and scatterers are identified based on the angle-of-arrival and delay information. These propagation paths together with simulated DSRC application antennas are then used to predict the probability of the received power in the adjacent zone. The power contribution of the scatterers are calculated and the dominant scatterers are found to be from ground and sidewalk scatterers.
Keywords :
direction-of-arrival estimation; maximum likelihood estimation; radiowave propagation; wireless channels; DSRC applications; angle-of-arrival information; dedicated short range communications; delay information; multidimensional maximum likelihood estimation algorithm; propagation path parameters; tunnel propagation channel characterization; wideband directional channel sounding; Acoustic propagation; Acoustic scattering; Delay estimation; Maximum likelihood estimation; Multidimensional systems; Parameter estimation; Propagation delay; Scattering parameters; Transportation; Wideband;
Conference_Titel :
Microwave Conference, 2007. APMC 2007. Asia-Pacific
Conference_Location :
Bangkok
Print_ISBN :
978-1-4244-0748-4
Electronic_ISBN :
978-1-4244-0749-1
DOI :
10.1109/APMC.2007.4554988
