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

Transcription

1 Broadcast goes Mobile. From T to DVB-H. Gerard POUSSET V.P. marketing MMC05 January 05 Berlin 1

2 What is MOBILE TV? In the car ' In the street ' : up to 250 km/h today DVB-H : end

3 OUTLINE 1. Mobile Diversity solutions 2. From to DVB-H 3. Conclusion 3

4 1. Mobile solution : DIVERSITY 4

5 DIB3000-MC : Enhanced demodulator IC for mobile environments! Mobile features :! Robust Analog Gain Control : Large and linearized dynamic range for low and high field strengths! Diversity combining : 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) 5

6 Diversity Reference Design Kits and STB MOD 3500 COMPLETE REF DESIGN MOBILE STB DIVERSITY STB DEV 3000-D DIVERSITY FRONT-END REFERENCE DESIGN 6

7 MOBILE LAB TESTS 7

8 Modulation parameters in mobility For MOBILE reception, the ROBUSTNESS is not only a matter of C/N, but also of SPEED average C/N 35 Defined in MCP Average value of C/N 30 HIGHER C/N NOT AVAILABLE IN THE FIELD MOTIVATE Used in CONFLUENT 25 WORKING RECEPTION AREA SPEED TOO HIGH INSTINCT C/N TOO WEAK Fd DOPPLER frequency 8

9 DIB3000MC performance in 8k 16QAM CR2/3 GI1/8 (German mode) Single DIB3000MC Diversity_2 DIB3000MC C/N [db] db fd [Hz] V [ k m / h ] Fc = 498 MHz (Ch. 24) Fc = 650 MHz (Ch. 43) Fc = 802 MHz (Ch. 62) V [ k m / h ] V [ k m / h ] 9

10 DiB3000MC performance in 8k 64QAM CR2/3 GI1/8 (French mode) S in g le D IB M C D iv e r s ity _ 2 D IB M C C/N [db] db fd [H z ] V [ k m / h ] Fc = 498 MHz (Ch. 24) V [ k m / h ] Fc = 650 MHz (Ch. 43) V [ k m / h ] Fc = 802 MHz (Ch. 62)

11 2. From to DVB-H 11

12 New : The DVB-H approach & objectives DVB-H : New based standard since Q4/2002 to develop broadcast services (including TV) on mobile phones DVB-H = Mobile + Time Slicing + MPE-FEC : the constraints to mobility Various modes (16/64 QAM ). Most of them reach high mobility with diversity (2 receivers) DVB-H targets Must be as close as possible to Need to work with single receiver for handheld devices MPE FEC Important power consumption due to the high bit rate received in continuous mode Limited awareness of compatibility with mobile application/image TIME SLICING (allows a trade-off between power consumption and the bit rate needed by the application) Marketing/strong awareness/contribution by large players 12

13 Demod Step1 Demod Step2 Demod Step3 HW + DVB-H SW HW + DVB-H FPGA DVB-H chip ShowCast USB2 Tablet PC MPE-FEC! Shown at IBC 2004, (Amsterdam, Sept 10th-14th)! Used for DVB validation task force (Berlin, Oct 04) Laptop MPE-FEC! Used in INSTINCT project (TDF, T-System, IRT,.) USB2! Integrates USB2.0 module! NDIS driver with DVB-H MPE-FEC implementation! Runs Windows Media 9, H263/264 Codec 13

14 Demod Step1 Demod Step2 Demod Step3 HW + DVB-H SW HW + DVB-H FPGA DVB-H chip NIM700 DVB-H Board USB2 Tuner SAW DIB3000MC demodulator FPGA MPE-FEC Time Slicing Host interface or MPEG2-TS NIM 7000 Power Management SRAM USB2 14

15 Demod Step1 HW + DVB-H SW Demod Step2 HW + DVB-H FPGA Demod Step3 DVB-H chip NIM700 DVB-H Board USB2 FPGA USB2 15

16 / DVB-H DIB3000MC performance in TU6 : 8k 16QAM CR2/3 GI1/8 DVB-H : MPE-FEC : 3/ Single DIB3000MC in mode MPE-FEC Table Error Rate : 10-3 C/N [db] ESR10 Single DIB3000MC in DVB-H mode with MPE-FEC 3/4 Portability improvement db ESR10 Diversity_2 DIB3000MC in mode fd [Hz] V [ k m / h ] Fc = 498 MHz (Ch. 24) V [ k m / h ] Fc = 650 MHz (Ch. 43) V [ k m / h ] Fc = 802 MHz (Ch. 62) Mobility improvement 16

17 Demod Step1 Demod Step2 Demod Step3 HW + DVB-H SW HW + DVB-H FPGA DVB-H chip DVB-H FireFly Block Diagram WBPR USB2 Internal Demod control FPGA Interf select Host processor or MPEG2-TS USB2 DVB-H MAC Interface type select 17

18 Demod Step1 Demod Step2 Demod Step3 HW + DVB-H SW HW + DVB-H FPGA DVB-H chip DVB-H front-end block diagram with a base band tuner output Low speed ADC Firefly Antenna WBD USB2 LPF I ADC Host Processor LNA VCO 0Y AGC CPU or Tuner 90Y LPF Q ADC FPGA TS BB AGC RF AGC USB2 18

19 3. CONCLUSION : Mobile / DVB-H in European Projects 19

20 MOBILE / DVB-H in EUROPEAN PROJECT Project name Tested application Conclusion VALIDATE MOTIVATE Mobile is usable in fixed application mobile is possible in QPSK MCP Mobile in cars mobile is possible for all modulations with Diversity CONFLUENT INSTINCT WING-TV Integrated Mobile receivers DVB-H / integrated receivers DVB-H tests (continuation of the DVB-H Validation Task force) mobile Diversity receivers tested with success in cars, up to 150 km/h DVB-H tested with success in indoor and outdoor with early prototypes Results in