| Author | Mishra, Birat Bahadur |
| Call Number | AIT RSPR no.TC-97-15 |
| Subject(s) | Artificial satellites in telecommunication
|
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Advanced Technologies |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. TC-97-15 |
| Abstract | Asian Internet Interconnection Initiatives (AIII) is a series of research actlv1t1es
performed on the test bed, constructed using Ku band star shaped VSAT network provided by
JCSAT-3 communication satellite. For countries where only AIII project provides Internet
connectivity, the stable operation of Alli satellite link is greatly desired. Therefore in this
research study, in order to obtain such operation, the effect of rain on AIII satellite link is
analyzed.
Rain attenuation at different rain rates are determined using Garcia Model and
exceeded percentage of a year for different rain rates is evaluated following CCIR Report 563.
Then, in order to obtain clear view on operating limit of AIII-AIT satellite link in terms of
rain rates, threshold rain rate, the rain rate up to which the reliable operation of satellite link
can be maintained and threshold outage time, the maximum outage time of the satellite link
are determined for different possible information bit rates of 1.536 Mbps (H11), 1.920 Mbps
(H12), 0.384 Mbps (HO), 1.544 Mbps (Tl) and 2.0488 Mbps (El) and coding rates of 1/2
and 3/4.The designed bit rate and coding rate of AIII-AIT satellite are 1.536 Mbps (Hl 1) and
3/4 respectively.
From this study, it is understood that the stable operation of designed AIII-AIT
satellite link can be found up to 3 8 mm/h and 21 mm/h of Bangkok and Japan rain
respectively. Also, simply changing coding rate to 1/2 from operating 3/4, only in rainy
season, the more stable operation satellite link can be achieved. |
| Year | 1977 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. TC-97-15 |
| Type | Research Study Project Report (RSPR) |
| School | School of Advanced Technologies (SAT) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Ahmed, Kazi Mohiuddin |
| Examination Committee(s) | Rajatheva, Premanandana;. Kanchana Kanchanasut |
| Scholarship Donor(s) | Goverment of Finland |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1997 |