1.Currently, a multi-channel PCM sound satellite broadcast transmission mode has beendeveloped in Japan which adopts PCM multi-chanel high voice quality TDMA method.
2.3. Take European DVB-S standard applied to various satellite broadcast for example, the channel coding structure charts is established. The theory of modulation mode of QPSK and Forward Error Correct including RS Coding,Convolutional Coding, Energy Dispersal and Interleaving are reseached.
