The traditional analog walkie-talkie is a communication mode in which voice, signaling, and signals are modulated onto the carrier frequency of the walkie-talkie in a continuous wave manner, and optimized processing such as amplification. It has the advantages of mature technology, complete system and relatively low cost.
The digital walkie-talkie is a digital communication mode that digitizes the voice signal, uses a specific digital encoding method and a specific baseband modulation form, and uses a digital signal processor for optimization.
The digital walkie-talkie is a digital communication mode that digitizes the voice signal, uses a specific digital encoding method and a specific baseband modulation form, and uses a digital signal processor for optimization.
The first is to make better use of spectrum resources. Similar to cellular digital technology, digital walkie-talkies can load more users on a designated channel and increase spectrum utilization. This is a solution to frequency congestion.
The second is to improve the call quality. Because digital communication technology has an error correction function in the system, compared with analog walkie-talkies, it can achieve better voice and audio quality in a wider range of signal environments, and it will receive less audio noise and more sound. Clear.
The last point is to improve and improve the integration of voice and data, and to change the weakness of the control signal that decreases as the communication distance increases. Compared with similar integrated analog voice and data systems, digital walkie-talkies can provide better data processing and interface functions, so that more data applications can be integrated into the same two-way wireless communication base station structure, providing voice and data services The integration is more complete and more convenient.
Compared with traditional analog walkie-talkies, it has strong voice anti-interference ability, high confidentiality, narrower channel bandwidth, and stronger data transmission ability.
