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SOA placement options in CDMA star
The SOAs can be placed at three positions as shown in
Fig.
,
and
. Using the models of ASE beat noises, thermal
noise and shot noise of receiver and the methodology as given in
[7], the computations have been done for the sample
network and results are analysed.
Figure:
Postamplifier scheme
11
![\includegraphics[width=3in]{fig4_1.ps}](img10.gif) |
Figure:
Preamplifier after decoder (preamplifier-1)
11
![\includegraphics[width=3in]{fig4_2.ps}](img11.gif) |
Figure:
Preamplifier before decoder (preamplifier-2)
11
![\includegraphics[width=3in]{fig4_3.ps}](img12.gif) |
Dr.Yatindra Nath Singh
2002-05-23