| Article Details : |
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| | | Article Name : | | | Optimal utilization of satellite bandwidth by using
output back off | | Author Name : | | | ATIF OSMAN BAKHEIT, HEISUM MUHAMAD EWAD, ABDALMAHMOUD ALI ABD ALLA | | Publisher : | | | Bridge Center | | Article URL : |  | | | Abstract : | | | A satellite transponder having finite resources in terms of
bandwidth and power, leasing costs are determined by bandwidth and
power used. For optimal utilization, a satellite circuit should be
designed to use similar share of transponder bandwidth and
transponder power.
The main objectives are summarized in determining the
appropriate space in the satellite channels to avoid the both, high
financial costs and weak performance, avoiding the effects of
parameters in BW determination, and making the output back off
(OBO) as a core measure of operation .
Two options (A) and (B) integration are presented toward
providing developed in maintaining the optimization whatever
parameters changes are occurred.
Option (A): determine the most suitable transponder
bandwidth by controlling some parameters such as modulation,
Forward Error Correction (FEC), and modulation. The results
obtained clearly show the use of higher levels of these parameters led to
a reduction in the assign BW which is a much-needed economic
phenomenon. The leased BW for duplex link is greater of PEB or BW,
for which is determine by the OBO. Option (B): is how to obtain an optimization by equality of the both
transponder BW and Power Equivalent Bandwidth (PEB), in the light
of this condition, the main contribution is obtained by revealed
mathematical equation that leads to such optimization in regardless of
changes in parameter(keeping the BW in fixed without effected by any
changes in the link).
Finally, a test is taken under various conditions to validate our
options. | | Keywords : | | | transponder power, making the output back off (OBO) as
a core measure of operation, Forward Error Correction (FEC), and
modulation, leased BW for duplex link is greater of PEB or BW, for
which is determine by the OBO, and keeping the BW in fixed without
effected by any changes in the link. |
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