Decoder and encoder
After 20 years of development, after the communications industry from scratch, from small to large, from a technical introduction to the self-creative leap. Today, China Mobile has never been leaps and bounds to stop the pace. FuTURE B3G/4G standards focus on the program is in full swing. FuTURE plan is an unprecedented 10-year research program, which aims for the future of wireless communications trends and needs, including the gradual establishment of a cellular mobile communications, broadband wireless access and short-range wireless connectivity, including the common wireless environment , and the formation of intellectual property and contribute to institutional standards.
Antique Telephone is one of its product .
Apple’s iPhone from the first pioneer of the global hot Apple IPhone 4 done, think about Apple’s iPhone is not a pleasant journey, in the middle has gone through many ups and downs, but Apple has always been a very positive attitude with problem solving, and strive to make products into a work of art. And several days later the new Apple iPhone launch, I believe we are very looking forward, Apple will give us exactly what kind of surprises, China Mobile will also be broadcast live video graphics, please everyone’s attention.
Channel encoder, including error-correcting codes and digital modulation, digital signal transmission is mainly to solve the reliability problem, it is also known as anti-interference code. After error correction coding of transmission streams with error detection and error correction capabilities, its role is to minimize the transmission of the channel bit error rate, then the error correction encoded into a transport stream for the channel modulation transmitted waveform.
Transmission channel into the ground (wireless transmitter), three types of cable and satellite, and therefore, a different transmission channel should choose a different modulation. decoder and encoder functions contrary, the receiver will receive the modulated signal, after demodulation, error correction decoding, demultiplexing, decompression, digital / analog (D / A) conversion, restore the original analog TV signal.
