Maduf04 Multi Antenna Dvb H Receiver Andy De Wilde

Multi-antenna DVB-H receiver Andy Dewilde, IMEC MADUF, March 20, 2007

2 Research focus Study on impact of a multi-antenna DVB-H receiver  on reception performance and  battery power consumption

3 Outline  DVB-H system overview  System modelling for simulation  Results  Conclusions

4 DVB-H conceptual system overview Robustness Power saving Mobility/network trade-off

5 DVB-H conceptual system overview (2) Research focus

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 MIMO channel specifications

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 DVB-H receiver specifications

10 DVB-H receiver specifications  Dual stream input  Channel estimation and Equalizer adapted for Maximum Ratio Combining (MRC)

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 Performance comparison between single antenna and dual antenna DVB-H reception. Worse Better

13 Dual antenna reception gives approx. 4 dB performance gain compared to single antenna. Dual antenna, MRC Single antenna ~4 dB gain

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 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 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.

Maduf04 Multi Antenna Dvb H Receiver Andy De Wilde

by IBBT on Apr 09, 2010

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