System, method and base station integrating mobile communication and FM broadcasting functions

Abstract

The invention discloses a system, a method and a base station integrating mobile communication and FM broadcasting functions. The core idea is: in the base station, a corresponding satellite synchronous timing unit, a synchronous exciter and a frequency modulation unit are respectively configured for each base transceiver station therein. Transmitting equipment; then, the satellite synchronous timing unit obtains the GPS time scale signaling information and sends it to the operation and maintenance unit of the frequency modulation transmitting equipment and the base transceiver station; the operation and maintenance unit calculates the pulse per second of GPS and sends it to the synchronous exciter, by The synchronous exciter locks the carrier frequency of the FM transmitting device; the FM transmitting device receives the FM signal, extracts the GPS time scale signaling information from it, and compares it with the GPS time scale signaling information from the satellite synchronous timing unit to obtain the link time Delay, according to which the FM signal is compensated and then broadcast. By adopting the invention, the synchronous coverage of the communication signal and the FM broadcast signal is realized, the repeated construction of the infrastructure such as the iron tower room and the like is avoided, and the cost is reduced.

Description

technical field [0001] The present invention relates to the field of wireless communication and FM (Frequency Modulation, FM) broadcasting field, in particular to a system, method and base station integrating mobile communication and FM broadcasting functions. Background technique [0002] Wireless broadcasting and coverage are usually the technical basis of a country's mass media means, and it is the most direct, effective, and fastest government machine and irreplaceable information dissemination tool to mobilize the people in special periods and circumstances such as disasters and wars. FM radio has a wide audience because of its quiet frequency band (87.5MHz ~ 108MHz, which will not interfere with the 900M and 1800M frequency bands of the GSM system), high sound quality, small and cheap receivers. With the continuous development of electronic technology, most of the MP3, MP4, PDA (personal digital assistant), and mobile phones now have the function of FM broadcast recept...

AI Technical Summary

Problems solved by technology

[0005] For traditional base stations, the clock accuracy required by BTS (Base Transceiver Station) is ≤±0.05ppm (Part Per Million, parts per million) (corresponding to 13MHz±0.65Hz), while the clock provided by the base station itself The accuracy is <±0.025ppm, which cannot meet the frequency difference requirements of FM broadcasting

Therefore, for traditional base stations, it is impossible to provide pilot frequencies for FM co-channel broadcasting

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