RELIABLE TRANSMISSION METHOD AND DEVICE FOR BROADBAND PRIVATE NETWORK IN HIGH-SPEED MOBILE CHANNEL

摘要

Provided in the invention is a transmission method for broadband private network in a high-speed mobile channel. A user terminal performs puncturing on a subcarrier of a symbol for transmitting data specified by a broadband protocol at a certain pilot interpolation interval, inserts a preset high-speed auxiliary pilot reference sequence, and converts a punctured frequency domain data signal into a radio frequency signal and sends the signal to a wireless base station; and the wireless base station analyzes the radio frequency signal, extracts a conventional pilot symbol and a high-speed auxiliary pilot symbol, and performs accurate channel estimation and frequency offset estimation of the high-speed scene respectively according to the local known conventional pilot reference information and the high-speed auxiliary pilot reference information. The invention solves the phase blur problem of frequency offset estimation under the high-speed mobile channel caused by limitation of the pilot resources in the prior art as well as the problem of the time domain interpolation accuracy of the channel estimation, which improves the demodulation performance of the high-speed channel and ensures the reliable transmission of data.