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Indian Journal of Radio & Space Physics (IJRSP) >
IJRSP Vol.40 [2011] >
IJRSP Vol.40(4) [August 2011] >
| Title: | Micro scale site diversity over a tropical site in India and evaluation of diversity gain with synthetic storm technique |
| Authors: | Roy, Bijoy
Shukla, Ashish K
Sivaraman, M R |
| Keywords: | Micro scale site diversity (MSD)
Micro rain cells (MRC)
Diversity gain
Correlation coefficient
Attenuation distribution |
| Issue Date: | Aug-2011 |
| Publisher: | NISCAIR-CSIR, India |
| PACS No.: | 92.60.jf |
| Abstract: | An experiment has been conducted to evaluate micro scale site diversity
(MSD) at Ahmedabad, a tropical site in India. Rain data is collected by a
linear array of tipping bucket rain gauges during 2007 and 2008 monsoon
periods. Spatial variation of rain fall has been studied with the help of joint
probability and correlation coefficients derived for the collected data. The
results support the existence of micro rain cells (MRC), which are the closed
contours of continuous rain with dimensions of few hundred meters. Large
attenuation of signals (above 10 GHz) occursed while passing through MRCs. MSD
is proposed to counteract attenuation and ensure higher link availability. An
attenuation of 30 GHz signal has been estimated using synthetic storm technique
(SST) in this paper and used to obtain diversity gain. The estimated diversity
gain has been presented for different site separations to explore dimension of
MRCs for different percentages of service availability. |
| Page(s): | 211-217 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-105X (Online); 0367-8393 (Print) |
| Source: | IJRSP Vol.40(4) [August 2011]
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