Abstract: An early warning method for safety production risk of tailings pond based on risk ranking is provided. The early warning method includes: monitoring and collecting internal basic data of a tailings pond in real-time, and performing a basic monitoring and a basic early warning; collecting geographical location data, meteorological data, and historical geological disaster data of an area where the tailings pond is located; performing risk ranking on a safety production risk of the tailings pond, thereby obtaining a risk level of the tailings pond; and collecting case data of global tailings pond accidents and hazard degree data thereof, acquiring accident solution strategies for the global tailings pond accidents, performing management and monitoring on the tailings pond, setting parameters in a process of the basic monitoring, and performing a ranked early warning on the safety production risk of the tailings pond based on the risk level.

Abstract: An early warning method for safety production risk of tailings pond based on risk ranking is provided. The early warning method includes: monitoring and collecting internal basic data of a tailings pond in real-time, and performing a basic monitoring and a basic early warning; collecting geographical location data, meteorological data, and historical geological disaster data of an area where the tailings pond is located; performing risk ranking on a safety production risk of the tailings pond, thereby obtaining a risk level of the tailings pond; and collecting case data of global tailings pond accidents and hazard degree data thereof, acquiring accident solution strategies for the global tailings pond accidents, performing management and monitoring on the tailings pond, setting parameters in a process of the basic monitoring, and performing a ranked early warning on the safety production risk of the tailings pond based on the risk level.

Abstract: A method and system for implementing synchronization between a receiving end and a source end of broadcast television service. The method includes: determining, at a transmitting station, time difference information between the source end and the transmitting station; and transmitting, by the transmitting station, time information of the transmitting station and the time difference information to the receiving end; implementing, by the receiving end, synchronization between the receiving end and the source end according to the time difference information and the time information of the transmitting station. With the method, synchronization between the source end and the receiving end in a broadcast television service network may be realized so that the receiving end may learn the accurate initial time information for receiving program streams transmitted from the program source. With the method, energy waste due to in-advance turn-on of receiving end device for receiving a program may be avoided.

Abstract: A method and apparatus for reducing a ratio of peak power to average power of multi-carrier signals are provided. The apparatus and method include the steps of: after modulating the multi-carrier signals respectively, summing the modulated signals to form a combination signal; computing and searching on at least one of the carriers based on the combination signal to obtain the resultant compensation signal; and summing the resultant compensation signal with the combination signal from the combiner to produce a compensated signal. The method and apparatus effectively reduce the ratio of peak power to average power of the multi-carrier signals.

Abstract: A method and apparatus of increasing output power of a plurality of carriers of a wide-band multi-carrier base station system utilizes gain adjusting coefficients to adjust output amplitude of the carriers to satisfy the requirement of the wide-band base station system for different number of carriers and output power. The output power of each of or a part of the carriers is increased when the number of carriers is reduced. Under the premise of not modifying the hardware and satisfying the requirement of protocol specification, the wide-band base station system supports different number of carriers by setting software so that the output power of the respective carriers and the coverage of the base station can be increased when the carriers do not operate in a full configuration.

Abstract: A method and apparatus for reducing a ratio of peak power to average power of multi-carrier signals are provided. The apparatus and method include the steps of: after modulating the multi-carrier signals respectively, summing the modulated signals to form a combination signal; computing and searching on at least one of the carriers based on the combination signal to obtain the resultant compensation signal; and summing the resultant compensation signal with the combination signal from the combiner to produce a compensated signal. The method and apparatus effectively reduce the ratio of peak power to average power of the multi-carrier signals.

Abstract: A method and apparatus of increasing output power of a plurality of carriers of a wide-band multi-carrier base station system utilizes gain adjusting coefficients to adjust output amplitude of the carriers to satisfy the requirement of the wide-band base station system for different number of carriers and output power. The output power of each of or a part of the carriers is increased when the number of carriers is reduced. Under the premise of not modifying the hardware and satisfying the requirement of protocol specification, the wide-band base station system supports different number of carriers by setting software so that the output power of the respective carriers and the coverage of the base station can be increased when the carriers do not operate in a full configuration.