To speed up its deagriculturalization, two problems must be solved, ie the transferchannel for surplus labor and land exchange.
为进一步加快非农化步伐，欠发达地区必须解决剩余劳动力的转移途径和土地流转两大问题。
2
Base on the analysis of terrestrial transferchannel, the paper introduces the DVB-T standard, and discuss the core COFDM technology as well as front-end transmit system structure.
OFDM (Orthogonal Frequency Division Multiplexing) is a new modulation technology, it is suitable to high-data-rate transmission in the wireless transferchannel with multi-path transmission.