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The advantages of digital walkie-talkie compared to analog walkie-talkie

Add time:2019-5-22
      In terms of design technology, radios can be divided into analog walkie-talkies for analog communication technology (also known as traditional walkie-talkies) and digital walkie-talkies designed with digital technology. The analog walkie-talkie modulates the stored signal to the transmission frequency of the walkie-talkie, while the digital walkie-talkie digitizes the voice information and transmits it in digital code form, that is, all modulations on the transmission frequency of the walkie-talkie are digital. Digital walkie-talkies have significant advantages such as strong voice resistance, clear voice, high confidentiality, narrower bandwidth occupied by channels, and stronger ability to transmit data.
        1. The traditional analog walkie-talkie is a communication mode that modulates voice, signaling and signals into the carrier frequency of the intercom and is optimized by amplification. It has the advantages of mature technology, perfect system and relatively low cost.
        Second, the digital walkie-talkie is a digital communication mode that digitizes the voice signal, uses a specific digital coding method and a specific baseband modulation form, and is optimized by a digital signal processor. First, spectrum resources can be better utilized. Similar to cellular digital technology, digital walkie-talkies can load more users on a given channel and improve spectrum utilization, which is a solution to frequency crowding. Second, improve the quality of the call. Because digital communication technology has in-system error correction function, it can achieve better voice and audio quality in a wider range of signal environments than analog walkie-talkies, and it will receive less audio noise and more sound. Clear.
        Third, improve and improve the integration of voice and data, and change the weakness of the control signal 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, enabling more data applications to be integrated into a two-way wireless communication base station structure for voice and data services. The integration is more complete and more convenient. With the development of radio communication technology, people's demand for wireless communication quality and the lack of spectrum resources, digital walkie-talkies will have a huge market demand. At present, the demand for digital walkie-talkies in China is also increasing.
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