Digital group mobile phone

Abstract

This invention discloses a digital cluster mobile phone, including the mainframe circuit module, the user's surface circuit module and the phone accessories. There into, the mainframe circuit module is composed of the baseband circuit and the radio-frequency circuit. In the baseband circuit, it adopts the controlling circuit with the processing chip OMAP5910 that is double-core embedded, and cooperates with the frequency decoder, the frequency amplifier and the baseband processing chip to compose the frequency processing circuit to finish encoding and decoding, amplifying of frequency signals and the conversion of I / Q signals of the baseband and realize the digital processing of the sound signals.

Description

technical field

[0001] The invention relates to a mobile phone circuit in the field of mobile communication, in particular to an internal control circuit of a digital trunking mobile phone. Background technique

[0002] In terms of its application fields, mobile communication can be divided into two categories, namely, dedicated mobile communication systems and public mobile communication systems. Private mobile communication systems include dispatching and command systems, vehicle position reporting systems, etc.; , Wireless paging systems, cordless phones, etc. The target user group of public mobile communication is the individual user as the unit, mainly based on "one-to-one" duplex telephone communication, the call object is random, and the users in the system are equal and do not distinguish priority. Public mobile communication is one of the means for people to facilitate daily communication and improve the quality of life. Although it also has a certain role in promo...

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