3. TECHNICAL BRIEF
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3.11 DVB-H System
3.11.1. DVB-H Block Diagram
DVB-H system block diagram is shown in the figure below.
You can see the flow of DVB-H signal by the below figure. First of all, you can see the antenna
& the GSM rejection filter. The GSM rejection filter is used to protect the DVB-H signal from the
GSM interference which is near the DVB-H signal band. First, DVB-H signal passes through
the antenna and the GSM rejection filter. And the tuner receives signal from the filter and
passes the signal over to the demodulator which demodulates the receiving signal and passes
it to the DSP performing the MPEFEC(Multi-Protocol Encapsulation Forward Error Correction) .
The SRAM which is attached to the demodulator is used as the buffer for MPE-FEC. DSP
receives the signal from the demodulator and decodes the signal, so that it can play sound with
the speaker and display the video of DVB-H signal through LCD. The DVB-H signal path is in
the next page.
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