broadcast goes mobile. from dvb - t t o d v b - h....1 2 new : the dvb-h approac h & objec t...

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MMC05 January 05 Berlin

Broadcast goes Mobile.Broadcast goes Mobile.From DVBFrom DVB--T to DVBT to DVB--H.H.

Gerard POUSSETGerard POUSSETV.P. marketingV.P. marketing

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What is MOBILE TV ?

In the car '

DVB-T : up to 250 km/h today

In the street '

DVB-H : end 2005

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OUTLINE

1. Mobile DVB-T Diversity solutions2. From DVB-T to DVB-H3. Conclusion

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1. Mobile DVB-T solution : DIVERSITY

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DIB3000-MC : Enhanced DVB-T demodulator IC

for mobile environments

! Robust Analog Gain Control : Large and linearizeddynamic range for low and high field strengths

! Diversity combining

! Mobile features :: Dynamic Guard interval positioning: Accurate channel estimation (slow and fast fadings): Doppler Effect compensation (up to 120 Hz in single mode)

! Less than 0.5 dB implementation margin from theory (Gaussian, Rice, Rayleigh)

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DVB-T Diversity Reference Design Kits and STB

DIVERSITY FRONT-END REFERENCE DESIGN

DEV 3000-D

MOD 3500

COMPLETE REF DESIGN MOBILE STB DIVERSITY STB

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MOBILE LAB TESTS

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Modulation parameters in mobility

For MOBILE reception, the ROBUSTNESS is not only a matter of C/N, but also of SPEED

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10

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25

30

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0 20 40 60 80 100 120 140 160 180

WORKING RECEPTION AREA

HIGHER C/N NOT AVAILABLE IN THE FIELD

C/N TOO WEAK

SPEED TOO HIGH

average C/N

Fd DOPPLER frequency

Defined in MCPMOTIVATE

Used in CONFLUENTINSTINCT

Average value of C/N

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DIB3000MC performance in DVB-T

8k 16QAM CR2/3 GI1/8 (German mode)

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 2 0 0 2 2 0 2 4 0 2 6 0 2 8 0V [ k m /h ]

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 2 0 0V [k m /h ]

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0V [k m /h ]

Fc = 498 MHz (Ch. 24)

Fc = 650 MHz (Ch. 43)

Fc = 802 MHz (Ch. 62)

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25

30

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0 20 40 60 80 100 120 140fD [Hz]

C/N

[dB]

SingleDIB3000MC

Diversity_2DIB3000MC

8 dB

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DiB3000MC performance in DVB-T

8k 64QAM CR2/3 GI1/8 (French mode)

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 2 0 0 2 2 0 2 4 0 2 6 0 2 8 0V [ k m /h ]

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 2 0 0V [k m /h ]

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0V [k m /h ]

Fc = 498 MHz (Ch. 24)

Fc = 650 MHz (Ch. 43)

Fc = 802 MHz (Ch. 62)

1 0

1 5

2 0

2 5

3 0

3 5

4 0

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0fD [H z ]

C/N

[dB

]

S in g leD IB 3 0 0 0 M C

D iv e r s ity _ 2D IB 3 0 0 0 M C

9 dB

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2. From DVB-T to DVB-H

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New : The DVB-H approach & objectives

• DVB-H : New DVB-T based standard since Q4/2002 to develop broadcastservices (including TV) on mobile phones

• DVB-H = Mobile DVB-T + Time Slicing + MPE-FEC

DVB-T: the constraints to mobility DVB-H targets

Various modes… (16/64 QAM…). Most of them reach high mobility with diversity (2 receivers)

Must be as close as possible to DVB-TNeed to work with single receiver for handheld devices – MPE FEC

Important power consumption due to the high bit rate received in continuous mode

TIME SLICING (allows a trade-off between power consumption and the bit rate needed by the application)

Limited awareness of compatibility with mobile application/image

Marketing/strong awareness/contribution by large players

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! Shown at IBC 2004, (Amsterdam, Sept 10th-14th)

! Used for DVB validation task force (Berlin, Oct 04)

! Used in INSTINCT project (TDF, T-System, IRT,….)

! Integrates USB2.0 DVB-T module

! NDIS driver with DVB-H MPE-FEC implementation

! Runs Windows Media 9 , H263/264 Codec

Demod Step1 Demod Step2 Demod Step3

DVB-T HW + DVB-H SW DVB-T HW + DVB-H FPGA DVB-H chip

DVB-T USB2

Laptop

MPE-FEC

Tablet PC

MPE-FECDVB-T USB2

ShowCast

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“NIM700” DVB-H Board

DVB-T USB2

DVB-T USB2

TunerDIB3000MC

DVB-Tdemodulator

SAWFPGA

MPE-FECTime Slicing

SRAMPower

Management

Host interface

or

MPEG2-TS

NIM 7000

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“NIM700” DVB-H Board

DVB-T USB2

FPGA

DVB-T USB2

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DVB-T / DVB-H DIB3000MC performance in TU6

DVB-T : 8k 16QAM CR2/3 GI1/8

DVB-H : MPE-FEC : 3/4

Mobility improvement

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 2 0 0 2 2 0 2 4 0 2 6 0 2 8 0V [ k m /h ]

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0 1 8 0 2 0 0V [k m /h ]

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 4 0 1 6 0V [k m /h ]

Fc = 498 MHz (Ch. 24)

Fc = 650 MHz (Ch. 43)

Fc = 802 MHz (Ch. 62)

8 dB

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15

20

25

30

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0 20 40 60 80 100 120 140fD [Hz]

C/N

[dB]

SingleDIB3000MC

in DVB-T mode

Diversity_2DIB3000MC

in DVB-T mode

Single DIB3000MCin DVB-H modewith MPE-FEC 3/4

MPE-FEC Table Error Rate : 10-3

ESR10

ESR10

Portabilityimprovement

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DVB-T USB2

DVB-T USB2

FPGA

DVB-H MAC

Interface type select

Host processor

or MPEG2-TS

Internal Demod control

WBPR

Interfselect

DVB-H FireFly Block Diagram

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DVB-T USB2

DVB-T USB2

FPGA

LNA

Antenna

LPF

VCO

0Y

90Y

LPF

WBD

Tuner

RF AGC

BB AGC

I ADC

Q ADC

FireflyLow speedADC

AGC CPU

Host Processor

or

TS

DVB-H front-end block diagram with a base band tuner output

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3. CONCLUSION : Mobile DVB-T / DVB-H in European Projects

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Project name Tested application Conclusion

VALIDATE DVB-T DVB-T is usable in fixed application

MOTIVATE Mobile DVB-T DVB-T mobile is possible in QPSK

MCP Mobile DVB-T in cars DVB-T mobile is possible for all

modulations with Diversity

CONFLUENT Integrated Mobile DVB-T receivers DVB-T mobile Diversity receivers tested

with success in cars, up to 150 km/h

INSTINCT DVB-H / DVB-T integrated

receivers

DVB-H tested with success in indoor

and outdoor with early prototypes

WING-TV DVB-H tests (continuation of the

DVB-H Validation Task force)

Results in 2005

MOBILE DVB-T / DVB-H in EUROPEAN PROJECT

broadcast goes mobile. from dvb - t t o d v b - h....1 2 new : the dvb-h approac h & objec t...

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