peb20954 Infineon Technologies Corporation, peb20954 Datasheet - Page 127
peb20954
Manufacturer Part Number
peb20954
Description
Smart Integrated Digital Echo Canceller Sidec
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB20954.pdf
(132 pages)
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Figure 42
echo path
The transmission path between R
to describe the signal path of the echo.
echo path capacity
The maximum echo path delay for which an echo canceller is designed to operate.
echo path delay (t
The delay from the Rout port to the Sin port due to the delays inherent in the echo path
transmission facilities including dispersion time due to the network elements. In case of
multiple echo paths, all delays and dispersions of any individual echo path are included.
The dispersion time, which varies with different networks, is required to accommodate
the band-limiting, and hybrid transit effects.
echo return loss (ERL) (A
The attenuation of a signal from the receive-out port (R
echo canceller, due to transmission and hybrid loss, i.e. the loss in the (near-end) echo
path.
Preliminary Data Sheet
Near-end
Hybrid
Location of levels and loss of an echo canceller
Elements
Network
Elements
Network
d
)
A
ECHO
ECHO
S
R
in
out
)
out
and S
other control circuitry
Echo estimator and
Digital Subtractor
127
in
of an echo canceller. This term is intended
A
CANC
Receive path
Send path
out
) to the send-in port (S
Non-linear
processor
A
L
NLP
RES
T1524860-96
PEB 20954
PEF 20954
S
R
Glossary
out
Far-end
in
L
L
in
Rin
RET
) of an
04.99
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