Maduf04 Multi Antenna Dvb H Receiver Andy De Wilde

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Maduf04 Multi Antenna Dvb H Receiver Andy De Wilde

  1. 1. Multi-antenna DVB-H receiver Andy Dewilde, IMEC MADUF, March 20, 2007
  2. 2. 2 Research focus Study on impact of a multi-antenna DVB-H receiver   on reception performance and   battery power consumption
  3. 3. 3 Outline  DVB-H system overview  System modelling for simulation  Results  Conclusions
  4. 4. 4 DVB-H conceptual system overview Robustness Power saving Mobility/network trade-off
  5. 5. 5 DVB-H conceptual system overview (2) Research focus
  6. 6. 6 A system model of DVB-H PHY layer has been developed in the Matlab simulation environment   System simulation model (Matlab) includes 1.  DVB-H transmitter 2.  MIMO wireless channel 3.  Dual antenna DVB-H receiver
  7. 7. 7 MIMO channel specifications
  8. 8. 8 MIMO channel specifications   Single input (Tx), multiple output (Rx1 & Rx2)   Typical Urban 6 (TU6) channel   Antenna correlation factor: 0.5 (~ 12..15 cm separation)   Time variant behavior (mobility simulation) 20 km/h 120 km/h Channel response
  9. 9. 9 DVB-H receiver specifications
  10. 10. 10 DVB-H receiver specifications   Dual stream input   Channel estimation and Equalizer adapted for Maximum Ratio Combining (MRC)
  11. 11. 11 Maximum Ratio Combining uses a weighted combination of antenna 1 and antenna 2 signals  High attenuation  Small signal  High noise impact  High data uncertainty  Assign low weight
  12. 12. 12 Performance comparison between single antenna and dual antenna DVB-H reception. Worse Better
  13. 13. 13 Dual antenna reception gives approx. 4 dB performance gain compared to single antenna. Dual antenna, MRC Single antenna ~4 dB gain
  14. 14. 14 At 120 km/h, there is a 1.5 dB performance loss compared to a static channel. Static 120 km/h ~1.5 dB loss
  15. 15. 15 About 7 to 10% battery power penalty when using dual antenna reception on typical DVB-H handheld   For dual antenna MRC receiver   2x Front End (FE)   1.5x Baseband (BB) ⇓   Approx. 7% increase in power consumption.
  16. 16. 16 Conclusions  Standard compliant DVB-H model has been developed  Dual antenna DVB-H reception has been simulated  With a typical channel, approx. 4 dB gain is achieved in receiver performance (before MPE-FEC)…  … and gives an increase of about 7% in battery power consumption on general DVB-H handheld.

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