Method and device for demodulation type recognition

Abstract

The embodiment of the invention discloses a method and a device for demodulation type recognition. The method comprises the following steps: detecting received signals, and recognizing complexing modeand demodulation mode which corresponds to the complexing mode according to the detection result. The invention can ensure the right demodulation of the signal or data and the network communication effect and improve the support performance of network transmission and the use experience of users.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for identifying a demodulation mode. Background technique [0002] How to improve spectrum efficiency has always been a hot spot in the industry's continuous research. As the number of subscribers continues to increase, operators are under increasing pressure on voice capacity, especially in countries with large populations. At the same time, with the continuous development of technology, the competition has become increasingly fierce, and the charges for voice services have been continuously reduced. Operators are facing cost pressures and need to use hardware and spectrum resources more effectively. [0003] In traditional voice, one time slot is assigned to one user to increase the voice capacity, that is, to carry more channels of voice on the same resource. One way to achieve this is to multiplex multiple channels on one time slot and ARFCN (Absolute ...

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Problems solved by technology

[0012]At the same time, due to the modulation method, there was no QPSK modulation system before the introduction of MUROS. Therefore, after the introduction of MUROS, when the network sends a signal to QPSK modulation signal, the terminal cannot be notified to use QPSK modulation, and the terminal can only use GMSK for demodulation, but cannot switch between the multiplexing mode and the demodulation mode. Even in blind detection, QPSK will not be used for detection. Therefore, the As a result, the terminal cannot demodulate the signal correctly, resulting in communication errors

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