Transcript The Evolutions of the Digital Broadcast Landscape

The evolutions of the
Digital Broadcast Landscape
Gerard FARIA
([email protected])
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
1
... A lot of suitors !
CMMB
(sTiMi)
DVB-SH
(DVB-H)
2008
2003
2007
2006
2005
2004
DMB-T
(GB20600-2006)
T-DMB
(S-DMB)
ISDB-T
S-DMB
(OneSeg)
(T-DMB)
DVB-H
(DVB-T)
UMTS
MBMS / HSDPA
MediaFLO
(Qualcomm)
GSM
(GPRS)
© Teamcast - 2008
Above
1 GHz
Below
1 GHz
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
ATSC M/H
(ATSC)
13th October 2008
2
“Multimedia Contents to Nomadic Terminals”
Plethora of Standards but…
(quasi-)all are using COFDM !
Gerard FARIA
([email protected])
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
3
Transmission: COFDM is everywhere!
DAB
DVB
ISDB
FLO
CDMB
CMMB
1,5 MHz
5/6/7/8
MHz
6/7/8
MHz
6/7/8
MHZ
6/7/8
MHz
2/8 MHz
8K
8K
4K
4K
2K
2K
OFDM symbol
Orthogonal
Carrier
Spacing
2K
SC
4K
4K
1K
Guard
Interval
Useful
Period
4K
1K
512
256
Time
2K
4K
8K
© Teamcast - 2008
With OFDM,
Bitrate is
INDEPENDENT
Of the s/c number
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
4
SSS options (1/3): Frame Preamble
DAB
D-QPSK
Preamble
Null
Symbol
Sync
Symbol
Data Payload
Signalling
Symbol(s)
Time
Frame Preamble :
for Synchronisation & Signalling with Null Symbol :
DAB/T-DMB,
for Synchronisation & Signalling without Null Symbol : FLO (TDM pilots), … DVB-T2 !
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
5
SSS options (2/3): Pilots
DVB
ISDB
FLO
D-QPSK
OFDM symbol
FFT
window
Guard
Interval
CMMB
BPSK
QPSK
QPSK
QPSK
QPSK
16QAM
16QAM
16QAM
16QAM
64QAM
64QAM
Useful
Period
Time
Pilots spread in Frame :
for Synchronisation, Channel Estimation & Signalling : DVB-H, ISDB-T, CMMB, … DVB-T2 !
for Synchronisation, Channel Estimation :
FLO (FDM Pilots), … DVB-T2 !
for Signalling :
CDMB or DTMB or DMB-TH,
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
6
SSS options (3/3): Symbol Preamble (TDS-OFDM)
CDMB
4QAM-NR
OFDM symbol
PN
Guard
Interval
FFT
window
Useful
Period
4QAM
16QAM
32QAM
64QAM
Time
PN sequences as OFDM symbol preamble (instead of the classical Cyclic Prefix):
for Synchronisation & Channel Estimation : DMB-TH
for Signalling : few pilots constituting a low bitrate channel
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
7
FEC & Interleaving: a lot of solutions!
T-DMB :
ISDB-T:
DVB-H :
FLO :
CDMB :
CMMB :
DAB-FEC (RS + Virtual Time Interleaver)
MPE-FEC (RS + Virtual Time Interleaver)
+ RS (MPEG)
RS (MPEG)
+ RS/Outer Intl
RS
BCH
RS/Outer Intl
+ CC (“Viterbi”)
+ CC (“Viterbi”)
+ CC/Inner Interleaver
+ TURBO
+ LDPC
+ LDPC
+ Service Time Interleaver (384 ms)
+ Sub-Band Interleaver (up to 1 second)
+ Interlaced Sub-channels (~250 ms)
+ Time Interleaver (~84 ms & ~255 ms)
+ 25ms slots within 1s frame
Data to Broadcast
FECs + Interleavers
Time
DMB-T
© Teamcast - 2008
ISDB-T
(OneSeg)
DVB-H
… DVB-T2 !
FLO
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
CDMB
13th October 2008
8
In Short : Variations around “C” - OFDM
“MAC”
DATA FEC
Radio
Interface
“PHY”
TS
Channel Encoder
OUTER CODING
BC
Outer
Intl
INNER CODING
CC
Inner
Intl
OFDM modulator
Time
Intl
SYNC
ESTIM
SIG
OFDM demodulator
iFFT
Framing/Pilots
xK
yK
“PHY”
iFFT
Framing/Pilots
zK
SIG
SYNC
ESTIM
xK
yK
zK
TS
Channel Decoder
Time
Intl
INNER DECODER
Inner
Intl
CC
“MAC”
DATA FEC
OUTER DECODER
Outer
Intl
BC
MAC
Channel
Encoder
Time
Interleave
Framing
Modulation
Channel
Bandwidth
T-DMB
RS + Outer Intl
(from DVB-T)
CC
(per service)
384 ms
(per service)
2K 1K ½K ¼K
Frame Preamble
D-QPSK
1.5 MHz
ISDB-T
-
RS + Outer Intl
CC + Inner Intl
Up to 1 second
8K 4K 2K
Pilots
D-QPSK, QPSK,
16QAM, 64QAM
6 / 7 / 8 MHz
DVB-H
MPE-FEC
(RS + Time Slice)
RS + Outer Intl
CC + Inner Intl
-
8K 4K 2K
Pilots
QPSK,
16QAM, 64QAM
5 / 6 / 7 / 8 MHz
DVB-SH
MPE-FEC
(RS + Time Slice)
Turbo Code
(3GPP2)
~300 ms
~10 seconds
8K 4K 2K
Pilots
QPSK,
16QAM
1,75 MHz &
5 / 6 / 7 / 8 MHz
~250 ms
4K
TDM & FDM Pilots
QPSK,
16QAM
6 / 7 / 8 MHz
~85 ms
~255 ms
SC or 4K
Symbol Preamble
4QAM-NR, 4QAM,
16-32-64 QAM
6 / 7 / 8 MHz
FLO
DMB-T
(TDS-OFDM)
CMMB
© Teamcast - 2008
RS + Turbo Coder
(Outer Interleave per service)
-
BCH + LDPC
RS + Outer Intl
25ms slots
4K (8 MHz)
2008 NEMLDPC
Summit - The evolutions
of the
Digital Broadcast
Within 1s
frame
1K (2Landscape
MHz)
BPSK,
8 MHz
QPSK, 16QAM
13th October 20082 MHz
9
“Multimedia Contents to Nomadic Terminals”
Physics remains Physics…
for all transmission systems !
Gerard FARIA
([email protected])
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
10
The Question of Protocol Stacks...
MULTIMEDIA : CONTENTS / APPLICATIONS / SERVICES
T-DMB
MP4-V
MP4-A
MP4-D
ISDB-T
MP2-A/V/D
MP4-A/V/D
DVB-SH
DVB-H
DVB-T
DVB-IPDC : IP DataCast
SERVICE Convergence
MP4-SL
IP: TRANSPORT Convergence
MPEG-TS
IP
IP
TS
TS
TS
Satellite
Terrestrial
encapsulation
TS FEC
(RS)
TS
T-DAB
Physical Layer
© Teamcast - 2008
MPEG2-MUX
Framing
DVB
DRM
Sub System
Digital TV Services
DAB
Digital RADIO Services
circuit
MP4-AVC
MP4-BSAC
MP4-BIFS
MediaFLO
Sub-Channel
TS
TS
FLO
ISDB-T
Single Segment
Physical Layer
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
TS
11
The Question of Mobile performance...
DVB-T vs DVB-H
DVB-H @ FER 5%
(8K - gi 1/4 - 16QAM 2/3 - MPE-FEC 3/4)
DVB-H @ MFER 5%
13,27 Mbps
50,0 dB
f D  V 
40,0 dB
30,0 dB
C
 cos()
DVB-H
MPE-FEC
GAIN :
2 to 5 dB
(Pedestrian)
Christian Andreas
DOPPLER
(1803-1853)
20,0 dB
f rf
DVB-H
MPE-FEC
GAIN :
5 to 9 dB
(Mobile)
64QAM 2/3 (20 Mbps)
DVB-H Gain
Area
Flat Behaviour
16QAM 2/3 (13 Mbps)
Up to Max Speed
DVB-T
Mobile
Penalty
6 to 12 dB
10,0 dB
QPSK 1/2 (5 Mbps)
0,0 dB
0 Hz
470 MHz UHF Band IV (21)
MHz UHF- Band
©854
Teamcast
2008V (69)
1 Hz
10 Hz
100 Hz
2 km/h
23 km/h
230 km/h
1 km/h
13 of
km/h
126 km/h
2008 NEM Summit - The evolutions
the Digital Broadcast Landscape
1000 Hz
1840 km/h
1008
km/h
13th
October
2008
TU612
The Question of Coverage...
Digital TV
transmitter
FOR FIX
RECEPTION:
Field Strength
is Planned
to offer the
C/N threshold
at 10 meters
above the
Ground Level
But for NOMADIC
RECEPTION:
Field Strength
Shall be
available
At 1.5 meter
Above Ground.
PENALTY: 12 dB
(for Outdoor Rx)
Broadcast to NOMADIC Handhelds Terminals :
Building Penetration Loss
Mobility
. Ground level penalty
~ 12 dB
. Indoor penalty
~ 8 dB
PENALTY : 8 dB (Outcar antenna) PENALTY: 8 dB
.© Mobile
penalty
(Outcar/Incar)
~
8
dB
/
16
dB
(for
Indoor
Rx)
PENALTY
: 16Landscape
dB (Incar antenna)
2008 NEM Summit - The evolutions of the
Digital Broadcast
Teamcast - 2008
13
13th
October
2008
The Question of Network Topology...
Hybrid
Networks
BroadCast
Networks
Cellular
Networks
(MNOs, Broadband)
Cellular?
Broadcast ?
km
m
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
14
3 KHz
AM Radio
Broadcast
[VLF / LF]
300 KHz
[MF]
AM Radio Broadcast
3 MHz
[HF]
30 MHz
FM
Band II
[VHF]
300 MHz
[UHF]
TV & Mobile
(Band III)
TV & Mobile
(Band IV & Band V)
3 GHz
[SHF]
30 GHz
[Source : Roke manor Research Ltd – 2007 - « The UK Frequency Allocation Map » ]
The Question of Radio Spectrum…
[EHF]
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
15
Is there Broadcast Spectrum Not Used ?
Electric
Waves
Radio
Waves
Visible
Light
Infra-Red
Ultra
Violet
Gamma
Rays
X-Rays
Cosmic
Rays
Radio Spectrum
Long
Wave
Radio
Increasing Coverage
Decreasing Bandwidth
3
LF
30
10


100
+
Short
Wave
Radio
MF
300
kHz
Medium
Wave
Radio
II
III
IV & V
FM
TV
TV
Radio (VHF) (UHF)
HF
3
1000
VHF
30
MHz
10000
L&S
Bands
C
Ku
Band Band
UHF
Ka
Band
SHF
300
3
100000
1000000
Decreasing Coverage
Increasing Bandwidth
EHF
30
GHz
10000000
300
100000000
1000000000
Communities (i.e. Telcos / Broadband / Broadcast) generally consider
first the spectrum they are operating for their primary services…
But sometimes considers also the one used by an other community…
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
16
Where to operate “TV to Mobile” ?
Channel
Bandwidth
VHF
UHF
T-DMB
1.5 MHz
Band III
L-Band
ISDB-T
6 / 7 / 8 MHz
Band III
Band IV & V
DVB-H
5 / 6 / 7 / 8 MHz
Band IV & V
DVB-SH
1,75 MHz &
5 / 6 / 7 / 8 MHz
L-Band & S-Band
6 / 7 / 8 MHz
Band IV & V
6 MHz
Band IV & V
6 / 7 / 8 MHz
Band IV & V
8 MHz
2 MHz
Band IV & V
L-Band & S-Band
FLO
ATSC-MH
DMB-T
(TDS-OFDM)
CMMB
A nightmare for the Regulators...
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
17
“Multimedia Contents to Nomadic Terminals”
Plethora of offers but…
What do we observe now?
Gerard FARIA
([email protected])
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
18
The Transmitter Network Question (CAPEX)
Transmitter Network
New
Existing
ATSC
MH
© Teamcast - 2008
DMB
TH
DVB
H
ISDB
Tss
T
DMB
CMMB
DVB
H
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
DVB
SH
FLO
13th October 2008
19
The Business Model Question (CAPEX, RoI & OPEX)
Pay
Free-ToAir
Brand
Name is
KING
© Teamcast - 2008
ATSC-MH
DVB-H
ISDB-Tss
T-DMB
Services
Existing
NW
Small
CAPEX
Content
SHALL be
attractive
DVB-H
FLO
DVB-SH
Best
Universal
Effort
Coverage
Coverage
Required
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
New
NW
Huge
CAPEX
13th October 2008
20
ModulCast for
Mobile Digital TV
®
Easy-to-integrate,
compact
and
truly
cost
effective technology for transmitter and basestation manufacturers:
 High performance Digital TV modulators for
T-DMB / DVB-H / FLO / DTMB / CMMB / DVB-T2
 Hierarchical MIP inserters for SFNs,
 Mobile DVB-T /-H / -SH antenna diversity receivers,
ModulCast
 Experimental DVB-H / DVB-SH receivers,
 Ultra Low Phase Noise Synthesizers,
All the essential technical bricks needed to
build up standard agnostic, high performance
transmission systems at competitive pricing.
© Teamcast - 2008
Further information at: www.teamcast.com
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
13th October 2008
21
Thank you for your attention !
Gerard FARIA
. Rennes
Chicago .
([email protected])
TeamCast Inc. TeamCast
111 West Washington Street
IL60602 - CHICAGO
(USA)
+1 1 312 263 0033
www.teamcast.com
© Teamcast - 2008
2008 NEM Summit - The evolutions of the Digital Broadcast Landscape
Espace Performance
F35769 - SAINT GREGOIRE
(FRANCE)
+33 2 23 25 26 80
www.teamcast.com
13th October 2008
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