Abstract: The present invention discloses a method and system for adaptively identifying signal bandwidth. The method includes: performing digitizing intermediate frequency processing to the received signal and outputting in-phase/quadrature (I/Q) signals; identifying signal bandwidth of the I/Q signals according to at least two signal identification templates and outputting the synchronized signal flows after a successful identification. A system for adaptively identifying signal bandwidth is also disclosed. The present invention can be compatible with at least two bandwidth modes, and the software can automatically perform identification and switch of the modulation bandwidth, when manual invention is not necessary and the operation is simple.

Abstract: The present invention discloses a method and system for adaptively identifying signal bandwidth. The method includes: performing digitizing intermediate frequency processing to the received signal and outputting in-phase/quadrature (I/Q) signals; identifying signal bandwidth of the I/Q signals according to at least two signal identification templates and outputting the synchronized signal flows after a successful identification. A system for adaptively identifying signal bandwidth is also disclosed. The present invention can be compatible with at least two bandwidth modes, and the software can automatically perform identification and switch of the modulation bandwidth, when manual invention is not necessary and the operation is simple.

Abstract: A method for distributing channels for interphone, a communication method, a system and an interphone are provided. The method for distributing channels for interphone includes: according to the subnet the interphone belongs to, acquiring the corresponding subnet resource information, determining a control channel and service channels that can be used by the interphone; the number of service channels is more than or equal to 2; different subnets correspond to different channel resources; and waiting on the control channel in the case of standby. A communication method and a system for interphone, as well as an interphone are also provided by the invention. The technical solutions of the invention improve the spectrum utilization efficiency, resolve the channel interference, shorten the time needed to set up a call, and reduce the probability of call collision.