shifts rebroadcasting to a future level: the new r&s tlu9 gapfiller · 2019-03-24 · may 2018...
TRANSCRIPT
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Shifts rebroadcasting to a future level:
The new R&S®TLU9 GapFiller
May 2018
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Limitations of today‘s gap filler products
ı High MER degradation
ı Weak Doppler Echo performance
ı Difficult echo cancellation configuration
ı Not robust in adjacent channel scenarios
ı Can not handle changing echo situations
May 2018 R&S®TLU9 GapFiller - Product Presentation 2
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Desired working point of gap filler operators
May 2018 R&S®TLU9 GapFiller - Product Presentation 3
Top signal quality, best reliability and minimal operational costs
at the same time
High
signal quality
High
reliability
Low OPEX
Optimum
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Motivation for a new gap filler from R&S
May 2018 R&S®TLU9 GapFiller - Product Presentation 4
Our customers need a gap filler with
ı Reliability
similar to low-power transmitters
ı Performance
independent from outside conditions
ı Allow deterministic network planning
Simply run without problems
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May 2018 R&S®TLU9 GapFiller - Product Presentation 5
The first of a new gap filler generation
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Technical Overview
R&S®TLU9 GapFiller
UHF 470 – 790 MHz(on request: 790 – 862 MHz)
DVB-T2, DVB-T, ISDB-TB
5W – 200W
19“ x 1U – 2U
R&S®TLU9 GapFiller - Product Presentation 6May 2018
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The Next Generation GapFiller
TLU9 GapFiller Features
May 2018 R&S®TLU9 GapFiller - Product Presentation 7
ı Higher max. Echo Level: +25 dB
ı Bigger Echo Window: 17 µs
ı Better Input sensitivity: -80dBm
ı Integrated input filter: 80dB suppression
incl. LTE filter
ı Adaptive non-linear digital pre-distortion
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May 2018 R&S®TLU9 GapFiller - Product Presentation 8
What actually makes the difference?
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Channel n-1 Channel n Channel n+1
Input filtering
Today‘s gap fillers
Example:
ı 30dB higher neighboring channels
ı Adjacent channel suppression: 80dB
After input filtering:
ı Still 20dB higher neighboring levels
ı Still effects of adjecent channels
Loss of 20dB dynamics in signal processing
Additional input filtering needed
May 2018 R&S®TLU9 GapFiller - Product Presentation 9
80dB
+20dB
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Highly Robust Transmission
R&S®TLU9 GapFiller
May 2018 R&S®TLU9 GapFiller - Product Presentation 10
ı Independence from
outside influences
ı Robust for high adjacent
channels levels
ı Protection from LTE signals
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Channel n-1 Channel n Channel n+1
Integrated input filter
Highly robust transmission
ı Adjacent channel suppression: 80dB
Suppression of up 30dB higher levels
ı Extremly sharp filter edges
80dB @ ±4.115 MHz
50dB lower neighboring levels
ı Input filter in very early stage
No influence of neighboring channels on
processing of actual signal
ı No emissions of adjacent channels
No need for additional input filtering
May 2018 R&S®TLU9 GapFiller - Product Presentation 11
-50dB
80dB
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Maximized Signal Quality
R&S®TLU9 GapFiller
May 2018 R&S®TLU9 GapFiller - Product Presentation 12
ı Highly advanced Echo Cancellation
ı Stable in complex echo situations
ı Minimized MER degradation
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24
26
28
30
32
34
-10 -5 0 5 10 15 20 25 30
XLx8000 10W @-51 dBm
TLU9 GF 25W @-51 dBm
Echo Cancellation to meet highest needs
Maximized signal quality
ı Superior performance
Strong for high echo levels
Cancellation of multiple echos individually
Highly improved signal quality
e.g. 33dB MER @ +15dB echo gain
e.g. 29dB MER @ +25dB echo gain
May 2018 R&S®TLU9 GapFiller - Product Presentation 13
MER in dB
Echo Level in dB
DVB-T2
Δ 7dB
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May 2018 R&S®TLU9 GapFiller - Product Presentation 14
Optimal Echo Cancellation?
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Fundamental limitations of today’s gap fillers
ı Most challenging scenarios
Doppler Echoes
Changing echo characteristics
ı Fundamental limitations of today’s gap filler
result from static settings of
Window size
Step size
ı But optimal operation demands:
Best MER High Flexibility
May 2018 R&S®TLU9 GapFiller - Product Presentation 15
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May 2018 R&S®TLU9 GapFiller - Product Presentation 16
First and only product to provide:
ı Optimal Echo Cancellation anytime
ı Continuous adaptation to
changing echo characteristics
ı No need for recurrent corrections
of EC settings
Start gap filling without worrying
R&S®TLU9 GapFiller
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ı Addresses technical and commercial
challenges of our customers:
Changing echo situations
Doppler echoes
Complex echoes (Multi-Echoes)
Unpredictable MERs
High operational costs
May 2018 R&S®TLU9 GapFiller - Product Presentation 17
15
20
25
30
35
40
0Hz 1Hz 5Hz 10Hz 20Hz
MER for Doppler Echos
XLx8000
TLU9 GF
ME
R in
dB
Doppler Freq.
World-Class Echo Cancellation Mechanism
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World-Class Echo Cancellation Mechanism
Optimal Echo Cancellation – anytime!
ı Addresses technical and commercial
challenges of our customers:
Changing echo situations
Doppler echoes
Complex echoes (Multi-Echoes)
Unpredictable MERs
High operational costs
ı Key feature name: R&S®smartEC
Continuous optimization to
changing echo situation in real-time
May 2018 R&S®TLU9 GapFiller - Product Presentation 18
15
20
25
30
35
40
0Hz 1Hz 5Hz 10Hz 20Hz
MER for Doppler Echos
XLx8000
TLU9 GF
TLU9 GF smartEC
ME
R in
dB
Doppler Freq.
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R&S®smartEC – shifts rebroadcasting to a future level
R&S®TLU9 GapFiller
May 2018 R&S®TLU9 GapFiller - Product Presentation 19
ı New operational models
ı Significant reduction of OPEX
ı New coverage planning options:
GapFiller sites instead of Tx sites
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Pioneering Features of the TLU9 GapFiller
ı Cancellation of very high echos
ı Stable in complex echo situations
ı Robust for high adjacent channel levels
ı Self-configuration of echo settings
ı Adaptive to changing echo scenarios
With minimal MER degradation
May 2018 R&S®TLU9 GapFiller - Product Presentation 20
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Resulting Customer Benefits
R&S®TLU9 GapFiller
May 2018 R&S®TLU9 GapFiller - Product Presentation 21
ı Maximized Signal Quality
ı Minimized influence of
outside conditions on MER
ı No need for regular modification
of EC setting
ı Reliable signal transmission
ı Deterministic planning of
GapFiller performance
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R&S®TLU9 GapFiller
Key Benefits
Top signal quality
by minimized MER degradation
Rock-stable in complex echo scenarios
by superb Echo Cancellation
Minimized operational costs
by adaptivity to changing echo characteristics
May 2018 R&S®TLU9 GapFiller - Product Presentation 22
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May 2018 R&S®TLU9 GapFiller - Product Presentation 23
R&S®TLU9 GapFiller – The Smart Decision