Article Details : |
| | Article Name : | | Cancelation of the technical selection of modulation
types in optimum satellite link by using data rate,
FEC, and carrier spacing | Author Name : | | ATIF BAKHEIT, HEISUM EWAD, ABDALMAHMOUD ALI | Publisher : | | Bridge Center | Article URL : | | | Abstract : | | Telecom operators are facing strong pressures on capital and
operational expenditures. The greater the amount of known
information loaded into the analysis, the more accurate it will be.
Modulation is played very important role in a satellite channels by
determinacy the optimum allocated transponder bandwidth (BW). The
higher modulation level, created a reduction and utilization saving in
the transponder BW, but this required high cost. The paper is
conducted toward how to compensate the higher level of modulation
with lower and maintaining the BW and the optimization in the link
without changes, by keeping BW and Power Equivalent Bandwidth
(PEB) in equality. In order to achieve the same allocated BW in
optimal link and cancelling the modulation technical selection there
are 4 options are chosen alternating in the services (Data Rate),
Carrier spacing, combined data rate with Forward Error Correction
(FEC), and combined spacing with FEC. In the last two options FEC
played core role in controlling and adjusting in the services and
spacing.
The contribution represent in at specific conditions
(parameters). Revealing a mathematic equation related in ability to precise selection of services (data rate) and spacing, leaded to cancel
the type of modulation selection. | Keywords : | | BW, D.R, Carrier Spacing, OBO, FEC, PEB and
Modulation. |
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