Digital Terrestrial TV Broadcast - KTH
Transcript of Digital Terrestrial TV Broadcast - KTH
Digital Terrestrial TV BroadcastCurrent situation and future perspectives
Erik StareTeracom
Overview
1. About Teracom
2. Digital Terrestrial TV Broadcasting
• Short tutorial
• Standards
3. Challenges for terrestrial broadcasting
4. WiB – the basis for next-generation standards for terrestrial
broadcasting (and broadband?)
2017-03-29 Erik Stare 2
What does Teracom do?
2017-03-29 Erik Stare 3
We use terrestrial transmitters…
2017-03-29 Erik Stare 4
… often at 300 m height…
2017-03-29 Erik Stare 5
…to allow for roof-top reception of digital TV…
… and in many cases
in-door reception
We also transmit FM radio…
…and digital radio
2017-03-29 Erik Stare 6
We are located throughout Sweden
FM coverage TV coverage Backbone network
2017-03-29 Erik Stare 7
2018-04-28 8
About Teracom
About the company (2017)
• Operates the digital terrestrialTV and radio networks in Sweden and Denmark
• Operates FM radio in Sweden and Denmark
• Media hub for 1000 TV channels
Media & Broadcast
• Operates about 6000 km ofradiolink (microwave)
• Uses about 6000 km of fibre in Sweden
• About 900 sites• Co-location and data centers
Networks
• Operates current TETRA-basedRAKEL network in Sweden
• Responsible for the coastalradio/satellite system in Denmark
Public Pretection & Disaster Relief
• Turnover: 1.987 GSEK• Result: 480 MSEK• 560 employees• Founded in 1992 with old roots
from Televerket• Own field service organisation
over the entire country
Swedish DTT Network - Our customers
Erik Stare
Pay-tv Operators
Broadcasters
2017-03-29 9
Swedish DTT Network – Service mix
• 56 national program services: o 47 SDTV och 9 HDTV
o 6 free-to air and 50 pay-tv services (Boxer)
2017-03-29 Erik Stare 10
Bergkvist/Tullstedt This document is the property of TERACOM AB and may not without our written permission be copied, imparted to a third party or used for any other unauthorized purpose.
Swedish DTT network: services and multiplexes
Multiplex 1 Multiplex 2 Multiplex 3 Multiplex 5 Multiplex 6 Multiplex 7 T2T2T222 20 20 33 37 31
Bergkvist/Tullstedt This document is the property of TERACOM AB and may not without our written permission be copied, imparted to a third party or used for any other unauthorized purpose.
MPEG4 HD based serviceTime shared services reg Regional insertionsBroadcast hours07
23MPEG2 SD based service(Free-to-air) Unscrambled service (NN) Logical Channel NumberFTA
2018-04-01
Sjuan(7)
TV4
reg
(4)
Kanal 11(11)
TV4 Fakta(24)
TV3
reg
(3)
Kanal 5
reg
(5)
Kanal 9(9)
MTV
TLC
TV8
TV10
(8)
(10)
(17)
(21)
(14)
Discovery Channel
(12) TV12
TNT(15)
Eurosport 2(48)
BBC World News(27)
Axess TV(25)
C More Series(52)
History(30)
(53)
(31)
Fox(13)
Disney XD(39)
BBC Earth(37)
Cartoon Network(37)
CNN(26)
C More First(51)
(22) Investigation Discovery
TV6(6)
Nickelodeon Comedy Central(34) (16)
National Geographic HD
Sportkanalen
BBC Brit
Viasat Explore
Travel Channel
(19)
(55)
(46)
(54)
(23)
(32)
(29)
C More Live HD/Hits HD
C More Fotboll/Hockey/Stars
Al Jazeera(28)
C More Sport/SF-kanalen
06
18(35) NickJr TV4 Film
(41)
Regional service
(82) fixed capacity
Kanal 5 HD
TV4 HD
reg
reg
SVT1 HD
reg
SVT2 HD
TV3 HD
(65)
(64)
(63)
(62)
(61)
reg
Animal Planet HD(20)
Horse & Country TV
Kunskapskanalen
SVT2
2 reg
SVT1
2 reg
(1/96)
(2/97)
(98)
(99)
Eurosport(47)
Barnkanalen/SVT24
05
19
06
18
06
Disney
Channel(38)
22
VH1 (42)
(36)Boomerang
06
21
Swedish DTT Network - Infrastructure
• Mux* 1 (Public Service) 99,8% coverage**
• Mux 2-7 98% coverage
• Main stations 54 (mux 1-7)
• Intermediate stations 110 (mux 1-7)
• Small sites 416 (mux 1)
* DTT Multiplex = A bundle of TV services that have been digitized, compressed and combined into a
data-stream for transmission to the consumer over a single channel
** Population coverage2017-03-29 Erik Stare 12
Swedish DTT Network – Customer offerings
DTT Broadcast:- 98% coverage- Basic SLA- MPEG2/SD, MPEG4/SD, MPEG4/HD
Local content distribution (e.g. local news and advertising)
Basic DTT Broadcast
Extended coverage
Regionalization
Enhanced SLA
Additional 1,8% coverage
Improved SLA (reliability, security etc)
All customers
SVT
SVT
SVT, TV4,
TV3, Kanal 5
+ local services
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Swedish DTT Network – Regionalization 2017
Broadcast service Regionalization
SVT1 / SVT2 21 + 21 regions
SVT1 HD / SVT2 HD 19 + 19 regions
TV3 19 regions
TV3 HD 19 regions
TV4 28 regions
TV4 HD 28 regions
Kanal 5 19 regions
Local TV services 3 services
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Very short tutorial aboutdigital terrestrial TV
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Simplified transmission chain for digital terrestrial TV
Channel
De-
mux
Mux
Video
coding
Audio
coding
Video
decoding
Audio
decoding
Modulation
Demodulation
Uncompressed
video
Uncompressed
audio
Decompressed
video
Decompressed
audio
MPEG-2 TSRF
(”air interface”)
Other services
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Constant and variable bit rate
• The efficiency of video coding / bit rate reduction depends on a number of
factors, e.g. how ”difficult” the material is
• Because the criticality of the material varies over time one gets the
following relations:‒ With constant bit rate (CBR) the quality varies over time
‒ With constant quality one gets a variable bit rate (VBR)
‒ None of these are desirable!
Picture quality, Q Picture quality, Q
tid tid
B, bit rate Q, Subjective picture quality
CBR VBR
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Statistical multiplexing
• A large number of variable-bit rate (VBR) video services are
combined into a stream that has both constant bit rate and a
constant video quality
Time
Capacity
Mbit/s
TV service 4
TV service 3
TV service 2
TV service 1
Service Information, CA, bootloading etc
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Multiplexing
• The result of the audio/video coding is put in so-called MPEG-2 Transport
Stream packets (TS packets)
• The multiplexing operation assembles TS packets from different services to
one single data stream – the MPEG-2 Transport Stream (MPEG-2 TS)‒ One ”colour” per service component (e.g. ”video of SVT2” or ”audio of SVT1”)
• This stream is broadcast over the air by the modulator/transmitter and is
demultiplexed by the receiver
TS packet 1 TS packet 2 TS packet 3 …
188 byte = 188 x 8 bits per TS packet
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…
MPEG-2 Transport Stream (TS)
Modulation
Channel
De-
mux
Mux
Video
coding
Audio
coding
Video
decoding
Audio
decoding
Modulation
Demodulation
Uncompressed
video
Uncompressed
audio
Decompressed
video
Decompressed
audio
MPEG-2 TSConstant bit rate
RF signalUHF: 8 MHz (ch.21-48)
VHF: 7 MHz (ch. 5-12)
DVB-T or DVB-T2
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Spectrum for Digital Terrestrial TV
• UHF band IV/V channel 21-48: 470-694 MHz
• VHF band III channel 5-12: 174-230 MHz
5 6 7 8 9 10 11 12
frequency
7 MHz
174 MHz 230 MHz
VHF band III
frequency
8 MHz
790 MHz
UHF band IV/V
21 22 … … 60…4948… … … 47 61 … 69
862 MHz
800 MHz
band
(earlier allocated
to 4G/LTE)
700 MHz
Band
(fully released
31 Oct 2017)
694 MHz470 MHz
Status today of
700 MHz band release(green=no DTT
in 700 MHz band)
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Worldwide Digital Terrestrial Television Broadcast Standards
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DVB-T and DVB-T2
• DVB-T (1997) was the first emission standard for digital terrestrial TV‒ 8 MHz RF bandwidth
‒ Possible to choose trade-off between capacity and C/N (C/I) performance
‒ Used in mux 1-5
‒ Capacity = 22.1 Mbit/s with same coverage as analogue TV
• DVB-T2 (2009) is based on DVB-T but with a lot of new functionality
• DVB-T2 allows for about 50% higher capacity than DVB-T for the
same coverage
• After release of 700 MHz band (after 31 Oct 2017)‒ 3 muxes with DVB-T (SD with MPEG-2/MPEG-4 video coding)
‒ 3 muxes with DVB-T2 (SD & HD with MPEG-4 video coding)
‒ Total broadcast capacity per site = 163 Mbit/s
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DVB-T och DVB-T2 use OFDM
-60
-50
-40
-30
-20
-10
0
10
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8
frequency relative to centre frequency f cp
ow
er
sp
ectr
um
de
nsity
MHz
dB
2 k mode
8 k mode
OFDM spectrum
Representation of OFDM in
the time-frequency plane
Guard Interval (GI)/Cyclic prefix (CP)
used to protect against multipath
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DVB-T2 builds on DVB-T
• OFDM based (thousends of orthogonal carriers)
• Same basic OFDM parameters as DVB-T‒ FFT size‒ Guard interval‒ Pilot patterns
• But also many new values
• Many other additions and improvements
• A lot of the signal processing in the receiver is similar to DVB-T
• T2 receivers also support DVB-T
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Symbol time (FFT size) and guard interval
• With DVB-T2 the symbol time can be increased by a factor two (16K FFT) and
four (32K FFT) compared to DVB-T‒ Reduces the overhead due to guard interval for a given size of guard interval (size of
SFN) increased capacity
32K symbolGI
GI 8K symbol
~6% overhead
in DVB-T2
25% overhead in DVB-T with maximum guard interval
• Increases possible guard interval size and therefore size of SFN for a given percentage
GI overhead
potentially more efficient frequency plan
• DVB-T2 may also use the same symbol periods as DVB-T (8K, 4K, 2K)
≈ 1 ms
≈ 4 ms
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Flexibility in pilot pattern
• DVB-T has a fixed pattern of scattered pilot cells
• DVB-T2 has 8 different patterns to choose from, depending on
network type and reception conditions
• Minimises pilot overhead
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Forward Error Correction (FEC)
• DVB-T has a convolutional code + Reed-Solomon
• DVB-T2 has an LDPC code + BCH code‒ Same as in DVB-S2 (satellite) and DVB-C2 (cable)
‒ Iterative decoding of LDPC
‒ 6 code rates: 1/2, 3/5, 2/3, 3/4, 4/5, 5/6
‒ Flexibility to make desired trade-off between capacity and robustness
‒ FEC block size (Nldpc): 64800 bits or 16200 bits
BBFRAME BCHFEC LDPCFEC
(Nldpc bits)
Kbch Nbch-Kbch
Nbch= Kldpc
Nldpc-Kldpc
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Interleaving
• Interleaving is of fundamental importance for the RF performance
on non-AWGN channels
• DVB-T2 has several interleavers‒ Bit interleaver within a FEC block
‒ Cell interleaver within a FEC block
‒ Time interleaving within
‒ Frequency interleaving within an OFDM symbol
• The result is that bit errors caused by the channel are equally
distributed among the FEC blocks, and also within FEC blocks
maximises error correction ability of the LDPC/BCH code
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Erik Stare
Kmin=0
TPS pilots and continual pilots between Kmin and Kmax are not indicated
boosted pilot
data
Kmax = 1 704 if 2K
.....
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Kmax = 6 816 if 8K
Interleaving in DVB-T and DVB-T2
Kmin=0
TPS pilots and continual pilots between Kmin and Kmax are not indicated
boosted pilot
data
Kmax = 1 704 if 2K
.....
.....
.....
.....
..... .....
.....
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Kmax = 6 816 if 8K
FECFECFECFEC
FEC
FEC
DVB-T
DVB-T2
Single erased OFDM-symbol
Bit errors
Single erased OFDM-symbol
Can be corrected!Time
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Modulation
• T2 has a 256-QAM mode‒ Carries 8 bits per data cell
• The T2 standard also includes‒ 64-QAM
‒ 16-QAM
‒ QPSK
‒ … inherited from DVB-T
256-QAM
2017-03-29 Erik Stare 31
Performance for DVB-T2 modulation and FEC close to theoretical limits
Capacity limits for a channel with white noise (AWGN)
0,00
1,00
2,00
3,00
4,00
5,00
6,00
7,00
8,00
9,00
10,00
0,0 5,0 10,0 15,0 20,0 25,0 30,0
Eff
ecti
ve b
its p
er
Cell
C/N
Capacity Performance
DVB-T2 QPSK DVB-T2 16-QAM DVB-T2 64-QAM
DVB-T2 256-QAM Shannon Limit BICM Limit
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Challenges for the future
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Some issues with current DTT
• Reduced spectrum
• Increased-quality services (SDHDUHD)
• Cost reduction needed
• Energy reduction needed
• Local services vs Single Frequency Networks
• Difficult to handle UHDTV efficiently
• Network optimized for roof-top reception‒ mobile reception requires dedicated optimised “mobile signals”‒ or “half-good” compromise
• Very difficult to introduce X-polar MIMO‒ Due to existing H-only receiving antennas
• No broadband (bi-directional point-to-point/unicast)
• Relatively “isolated” from mobile telecom‒ Not implemented in handheld devices
2017-03-29 Erik Stare 34
Migration to new standards
• Painful process to migrate to new broadcast standards
• Difficult to justify a new “DVB-T3” standard without radically improved
performance & functionality
• A small step is not enough…
• Is a “giant leap” possible?
2017-03-29 Erik Stare 35
WiB – A new system concept for DTT
• Developed at Teracom
• IBC2016 Best Conference Paper Award
• May potentially resolve all identifies issues
2017-03-29 Erik Stare 36
How could that be achieved?
2017-03-29 Erik Stare 37
Traditional frequency planning
-400 -300 -200 -100 0 100 200 300 400
-300
-200
-100
0
100
200
300
12
3
4
5
6
7
12
3
4
5
6
7
12
3
4
5
6
7
12
3
4
5
6
7
12
3
4
5
6
7
12
3
4
5
6
7
12
3
4
5
6
7
km
km
2017-03-29 Erik Stare 38
• Only a fraction of the UHF channels are used
from a given transmitter (TX) site‒ Typically about 1/5th of the channels (reuse-5)
• In order to get sufficiently high total DTT capacity high order constellations are used‒ DVB-T: 64-QAM‒ DVB-T2: 256-QAM
• These require a high SNR and therefore a lotof power
Frequency
Power [W] (drawn to scale)
UHF1 UHF2 UHF3 UHF4 UHF5 UHF6 UHF7 UHF8 UHF24 UHF25 UHF26 UHF27 UHF28
DVB-T2
Mux 1
…
2500
DVB-T2
Mux 2
DVB-T2
Mux 6
No power
…
Required TX power for traditional DTTExtremely unbalanced RF power across UHF channels –
sub-optimum from efficiency point of view!
2017-03-29 39Erik Stare
Shannon’s law and required power
• Required power (SNR) increases exponentially with capacity (spectral efficiency)
• High capacity also meanshigh sensitivity to interference
• Increased power not a goodway to further increaseoverall capacity
2017-03-29 Erik Stare 40
𝑹 = 𝑩 ∙ 𝒍𝒐𝒈𝟐(𝟏 + 𝑺𝑵𝑹) [bits/s]
What about the other way around?
• Using instead a more robust transmission mode (lower required SNR)‒ Going backwards on the exponential curve!‒ Allows for a large reduction in power
• Allows using a lower reuse factor, i.e. more spectrum per site‒ Larger basic signal bandwidth
• Why not go all the way to QPSK and reuse-1?
2017-03-29 Erik Stare 41
Increased spectrum
exploitation (reuse-1)
Reduced
power
Frequency
Power [W] (drawn to scale)
UHF1 UHF2 UHF3 UHF4 UHF5 UHF6 UHF7 UHF8 UHF9 UHF10
WiB…
UHF24 UHF25 UHF26 UHF27 UHF28
DVB-T2
Mux 6
DVB-T2
Mux 2DVB-T2
Mux 1 …
2500
50
17 dB difference
per RF channel
Factor 50!
WiB - Spreading the power equally over all frequencies(Single wideband WiB signal from all sites, reuse-1)
About 90% less total TX power by using all frequencies2017-03-29 Erik Stare 42
Basic principles of WiB
• Wideband‒ Wideband transmission as a single WiB signal
‒ Covering potentially the whole 224 MHz UHF
band (28 UHF channels)
• Reuse-1‒ Adjacent TXs use the same frequencies
‒ Very challenging interference situation
‒ e.g. C/I = 0 dB
• Robust transmission mode required‒ e.g. QPSK, req. C/N close to 0 dB
• Interference Cancellation‒ Removes unwanted interference
• Frequency hopping (optional)
2017-03-29 Erik Stare 43
Frequency
Power [W] (drawn to scale)
UHF1 UHF2 UHF3 UHF4 UHF5 UHF6 UHF7 UHF8 UHF9 UHF10
WiB…
UHF24 UHF25 UHF26 UHF27 UHF28
DVB-T2
Mux 6
DVB-T2
Mux 2DVB-T2
Mux 1 …
2500
50
RF1RF2RF3RF4RF5RF7
Time
Frequency4*8=32 MHz
RF6
• High basic robustness (close to C/I=0 dB)
• Rejection via RX antenna
‒Rooftop: Directional antenna
Antenna discrimination 16 dB (ITU)
‒Mobile: Dynamic beamforming
• Interference cancellation
TX1
TX2
TX3
RX
How to handle interference
2017-03-29 Erik Stare 44
TX = Transmitter site
RX = Receiver
TX1
TX2
TX3
RX
N=1
C3=1
C2=2
C1=4
N=1
C3=1
C2=2
Demodulated
and
cancelled
N=1
C3=1
Demodulated
and
cancelled
Demodulated
Required C/N = 0 dB (linear 1)
TX1
TX2
RX
Cancellation
of TX2
Interference cancellationVia Successive Interference Cancellation
and/or Receiver Antenna Beamforming/Cancellation
All TXs are synchronised but
with different content and
pilots
2017-03-29 Erik Stare 45Antenna beamforming may be independently optimised for each cancellation step!
Antenna beamforming
Receiver complexity
• A receiver is not expected to demodulate the 224 MHz WiB signal (200-300 Mbps) as
a whole‒ A receiver rather extracts a selected service and demodulates only the associated part of the
signal
‒ Only (e.g.) 4*8 MHz = 32 MHz at a time, then frequency hopping to new 32 MHz block etc
‒ Additional complexity for frequency-hopping tuner (e.g. TFS) is low
2017-03-29 Erik Stare 46
RF1RF2RF3RF4RF5RF7
Time
Frequency4*8=32 MHz
RF6
• What we do have:‒ Factor 4 increase in sampling frequency and FFT size due to wider tuner bandwidth
‒ Additional complexity for Interference Cancellation‒ but rather limited thanks to all TXs being synchronized
‒ small loop rather than full remodulation
Network performance simulations
Time correlation type Best TX Wanted TX
Inter/Intra site (C) 3.41 bps/Hz 1.55 bps/Hz
Intra-site (U1) 3.38 bps/Hz 1.37 bps/Hz
No correlation (U2) 4.07 bps/Hz 1.60 bps/Hz
• Effective TX antenna height 250 m
• 60 km TX separation
• 1 kW ERP per UHF channel (17 dB lower than today)
• Propagation according to ITU-R P.1546
• Standard deviation: 5.5 dB (shadow fading) + 2.0 dB (frequency-dependent fading)
• Spatial correlation model
• Three different time correlation models (C, U1, U2)
• Directional RX antenna at 10 m (11 dBd gain, max 16 dB discrimination)
• Best TX case: The best TX is chosen irrespective of content
• Wanted TX case: A particular TX (with desired content) is required
• Interference cancellation of up to 2 TX signals
• Spectral efficiency calculated as average (normalized) Shannon capacity (95% probability, 99% of time) in the worst point
DVB-T2 today: about 1 bps/Hz
2017-03-29 Erik Stare 47
High bit rate services
• Thanks to the wideband nature of WiB, the system can efficiently
handle video services with high peak data rate (28-40 Mbps)
‒ such as UHD
• This includes also close-to-ideal handling of variable-bit rate services
(statistical multiplexing)
2017-03-29 Erik Stare 48
Reduced costs
• Capital Expenditures (CAPEX)‒ Single wideband transmitter (TX)
‒ Required total output power about half of one existing DTT TX
‒ No need for combiners - only a single wideband RF filter
‒ Lower equipment volume/weight‒ May allow mast positioning of the TX no RF feeder needed
‒ Lower performance requirements on TXs (linearity etc), due to robust transmission
‒ Drastically reduced need for cooling and backup power
• Operational Expenditures (OPEX)‒ >90% reduction in fundamental energy consumption
‒ Reduced maintenance need (less equipment, less sensitive, longer lifetime)
‒ No need for frequency planning and frequency changes
Combiner room today
2017-03-29 Erik Stare 49
Additional note:
• Combiners and feeder together amount to about 3 dB attenuation
• Getting rid of these allows for a further halving of power consumption A total of 95% reduction !
Extension of the basic WiB concept(examples)
• Cross-polar MIMO (H + V polarisation on the same frequency)
‒ May further double the WiB capacity
‒ Could be backwards-compatible with legacy RX antennas‒ Existing antennas would get ”normal WiB capacity”
‒ Sufficient separation via RX antenna polarization discrimination (16 dB)
‒ User with a new antenna could get twice the capacity
• Superposition-based combination of broadcast and unicast (mobile
telecom) in the same spectrum ‒ Transmission on the same time/frequency (e.g. on the same ”resource block”) with
controlled power difference
‒ Separated in the receiver by (LDM-based) successive interference cancellation
2017-03-29 Erik Stare 50
Non-Orthogonal Multiple Access (NOMA)
• FDM: Each signals may only use a subset of spectrum, but all time
• TDM: Each signal may use all spectrum but only a subset of time (time slot)
• NOMA (aka LDM): Each signal may use all spectrum all time‒ Several signals are superimposed using the same time/frequency (e.g. resource block)
‒ One layer may be broadcast/multicast
‒ Several possible unicast layers
2017-03-29 Erik Stare 51
N=1
C3=1
C2=2
C1=4
N=1
C3=1
C2=2
Demodulated
and
cancelled
N=1
C3=1
Demodulated
and
cancelled
Demodulated
Instead of this prolonged tug of war…
DTT spectrum Mobile Telecom spectrum
2017-03-29 Erik Stare 52
… why not this Win-Win peace project?
DTT
Mobile Telecom
NOMA/LDM transmission using the same spectrum
(100% of time, 100% of frequency)
Mobile Telecom receivers first
demodulate and cancel DTT
Mobile Telecom signals are
”invisible” for DTT receivers
Controlled level
distance
Separated via
Interference
Cancellation
2017-03-29 Erik Stare 53
A WiB VisionSame system/standard for broadcast and unicast
5G New Radio - Broadcast
5G New Radio - Unicast
Same NOMA/LDM-based system/standard
2017-03-29 Erik Stare 54
2017-03-29
Vertical
Sector
#1
WiB
DTT
(DVB-T/T2)
Horizontal polarisation
Vertical polarisation
DTT vs WiB:
• WiB @ 17 dB lower power/RF channel
• 16 dB polarisation discrimination
• WiB unlikely to significantly affect current DTT
operation!
• DTT may have some negative impact on WiB, but
limited due to WiB wideband nature
Vertical
Sector
#2
Vertical
Sector
#3
Vertical
Sector
#4
New advanced antennas with (e.g.)
• 18 horizontal 20-degree sectors
• Vertical lobe width < 1 degree
Several superimposed
signals within each sector
using LDM
Erik Stare 55
WiB-BC + WiB-UC(Example)
TX ABC
WiB-UCN
WiB-BC
WiB-UC
WiB-BC
WiB-UC
WiB-BC
3 dB
3 dB
3 dB
20 dB
10 dB
C (10 km) B (20 km) A (30 km)
Horizontal
Sector (20°)
• WiB-UC may exploit the (far) better C/(N+I) closer to the TX
• Users A, B and C may also use the same spectrum in LDM (more efficient than TDF/FDM)
2017-03-29 Erik Stare 56
Possible standardisation paths for WiB
2017-03-29 Erik Stare 57
DVB Commercial and
Technical
Study Missions
about WiB
(until end of May 2018)
DVB
Standard?3GPP-5G
Standard?
WiB – Summary of gains
• Increased spectral efficiency
• Radically reduced network cost‒ and energy consumption
• Unconstrained use of local services
• Allows for efficient handling of UHD‒ Close-to-ideal video coding statmux gain (VBR services)
• Doppler performance allowing high-speed mobile reception of all “roof-top” services
• Broadcast and broadband in the same spectrum
• Converged win-win solution with mobile telecom
Big enough leap?
2017-03-29 Erik Stare 58
IBC2016 Best Conference Paper Award to WiB
2017-03-29
From award ceremony 11 Sept 2016 at IBC, Amsterdam
From left
• Erik Stare, Teracom
• Peter Klenner, Panasonic
• Jordi Giménez, UPV
Erik Stare 59
Thank you for your attention!
2017-03-29 Erik Stare 60