COFDM modulation technology is a wireless environment ¢Ÿ high-speed transmission technology is the technology of high-speed serial data will be converted into relatively low-speed multi-channel parallel data of various carrier and modulation. Parallel transmission system that significantly extends the pulse width symbols to enhance anti-multipath fading performance. With the rapid development of communication technology, COFDM modulation technology also came into being, COFDM video transmission in the "high-speed movement" and "non-pass conditions as" high-quality real-time image and data transmission possible. COFDM modulation technique used communication equipment has entered a new era.
      COFDM modulation technique due to a high technical threshold, currently only a few foreign companies have a core COFDM modulation technology, the main direction of development is a radio and television industries, such as the European DVB-T is based on COFDM modulation techniques coupled with MPEG2 video codec technology, a digital TV standard.
      Hanhsx the use of advanced multi-carrier COFDM modulation technology own R & D and production of wireless mobile video transmission equipment, COFDM video transmission equipment, has a strong ability of anti-multipath interference and have blocked the transmission capacity of the environment  to achieve "high-speed movement" "non-pass conditions as" real-time transmission of high-quality images and, if shelter, multi-path interference, NLOS cases of non-line-of-sight transmission of high-quality video still, Hanhsx products include dense film-style, man-style, vehicle-mounted , multi-style, two-way, COFDM ¢Ÿ bridges and other products widely used in the army, armed police, public security, fire, transportation, civil air defense, urban management, earthquake, water conservancy, meteorology, petroleum and other industries.