Title : 
The influence of communication distance on multipath channel characteristic of tunnel
         
        
            Author : 
LI, Bingyu ; Zhang, Shen
         
        
            Author_Institution : 
Sch. of Inf. & Electr. Eng., China Univ. of Min. & Technol., China
         
        
        
            fDate : 
Oct. 28 2003-Nov. 1 2003
         
        
        
        
            Abstract : 
Ray-tracing method was used to simulate the characteristic of wide band radio wave transmission in tunnel. The simulation results showed that the root-mean-square delay spread /spl tau//sub rms/ caused by multipath propagation fade varied with the communication distance in tunnel. Therefore the correlation bandwidth of the channel was connected with the communication distance in tunnel. The attenuation caused by multipath propagation fade varied with the communication distance too.
         
        
            Keywords : 
multipath channels; radiowave propagation; ray tracing; channel correlation bandwidth; communication distance; multipath channel characteristic; multipath propagation fade; ray-tracing method; root-mean-square delay; wide band radio wave transmission; Attenuation; Bandwidth; Delay effects; Multipath channels; Optical reflection; Propagation delay; Ray tracing; Receivers; Solid modeling; Wideband;
         
        
        
        
            Conference_Titel : 
Antennas, Propagation and EM Theory, 2003. Proceedings. 2003 6th International SYmposium on
         
        
            Conference_Location : 
Beijing, China
         
        
            Print_ISBN : 
0-7803-7831-8
         
        
        
            DOI : 
10.1109/ISAPE.2003.1276824