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Analysis of Wireless Channel Based on Frequency Domain Shooting-and-Bouncing Ray

Author: LiZongZheng
Tutor: ChenRuShan
School: Nanjing University of Posts and Telecommunications
Course: Electronics and Communication Engineering
Keywords: Radio channel Bouncing ray method Frequency domain modeling Coherence bandwidth Frequency selective
CLC: TN929.5
Type: Master's thesis
Year: 2012
Downloads: 13
Quote: 0
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Abstract


With the continuous social progress and development , so that people will increasingly high quality requirements of the wireless mobile communication . Since wireless channel as the most basic of the wireless mobile communication media , therefore , the analysis of the wireless channel is very meaningful necessary . Indoor environment is a very important application environment , in indoor radio waves from the climatic factors affect , but the indoor environment is very complex , and subject to the interior walls , glass , furniture , pedestrians , and other series of obstacles , the signal arrive at the receiving point needs to be direct , reflection, diffraction and other propagation mechanisms , which are caused by many researchers had a keen interest in the radio channel . Bouncing ray (SBR, Shooting-and-Bouncing Ray) is a widely used high-frequency algorithm in electromagnetic analysis of the physical environment has required less computer memory and calculation speed advantages . It applies to conduct in-depth research on the characteristics of the wireless channel parameters , and be able to quickly and efficiently provide better prediction results . The paper uses the bounce -ray method to calculate the frequency response of the partial region , the radio channel characteristics and according to the frequency response analysis . The main content of this paper as well as the contribution as follows : (1) through the reading of the relevant literature , to master the basic theory of the radio channel , the propagation of radio waves , physical optics and geometrical optics method on some of the radio channel characteristics described . (2 ) bouncing ray method in-depth study , and gives the scattering problem of numerical results , verified by the comparison of the results with the commercial software and compared with the results in the literature , bouncing ray method based program correctness . (3) modify the algorithm of the Fortran language bouncing ray method . The radio channel from the perspective of the frequency domain , using a program based on the algorithm is calculated for having a more complex structure in a lot of radio channel frequency-domain response , and according to the frequency-domain response to the frequency of the radio channel path loss , the frequency domain correlation coefficient coherence bandwidth and rms ( root mean square ) delay and coherence bandwidth relationship -depth research .

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