PEF22827EL-V11 Lantiq, PEF22827EL-V11 Datasheet - Page 118

• Manufacturer Part Number: PEF22827EL-V11
• Manufacturer: Lantiq

Specifications of PEF22827EL-V11

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Figure 18
Achieving the Optimal Link
In this state, the RA algorithm takes the following parameters into account:
•
•
•
•
•
To achieve the optimal link, the RA algorithm does the following:
1. Scans the spectrum in compliance with the band plan limits and power back off laws.
2. Analyzes the scanned data to detect the following sources of interference:
Preliminary Data Sheet
Modem limitations
Noise profile including self FEXT and alien noise
Permitted band plan, including notch
Abnormal spectrum distortion (for example, wide notch caused by multiple bridge
taps)
Rate limitations
– Bridge taps
– NEXT
– FEXT
Monitoring the
Achieving the
optimal link
optimal link
RA STATE
RA Simplified Flow Diagram
Analysis: Spectral capacity, TLAN, SNR
Run scan 2nd stage (NT transmits)
Run scan 1st stage (LT transmits)
(Link mode, BER and margin)
LT retrieves results from NT
Set margins per band
Reduced warm link
SNR measurement
(1 of 3 is selected)
Set target profile
Monitor link
Default link
Default link
FIRMWARE
118
Operation – Digital Block
MANAGEMENT
Interleaver delay
Min margin
Maximum rate
Actual band plan
Actual rate
Actual interleaver
Band plan
Auto rerun counter
Rerun recommendation
Rev. 1.1, 2005-01-30
VDSL6100i
PEF 22827
ra_bd