TETRA transceiver and implementing method thereof

Abstract

The invention discloses a TETRA transceiver and a method for realizing the TETRA transceiver, wherein the transceiver comprises a broadband radio frequency front end component and a carrier wave processing plate, wherein the broadband radio frequency front end component comprises a receiving channel and a sending channel, wherein the receiving channel comprises a radio frequency receiving filter,a low noise amplifier, a down converter, an intermediate frequency filter for receiving and an intermediate frequency automatic gain control amplifier which are connected in turn, the sending channelcomprises an intermediate frequency for sending, an intermediate frequency amplifier, an up converter, a radio frequency sending filter and a radio frequency power amplifier which are connected in turn, the carrier wave processing plate comprises an analog to digital conversion module, a digital to analog conversion module, a field programmable gate array device, a digital signal processer and a clock unit. The transceiver has higher performance, higher flexibility, strong adaptability to signal changes, a system hardware structure is easy for modularized and structuralized design, a hardwareplatform has simple structure, and the transceiver is characterized in that the versatility is high, the system function is easily expanded and updated, and the like.

Description

technical field [0001] The present invention relates to a TETRA transceiver and its implementation method, specifically, a broadband digital intermediate frequency transceiver using software radio technology and its implementation method, which is applied in a digital trunking communication system as a transceiver of a trunking system base station letter machine. Background technique [0002] At present, there are many digital trunking communication systems in the world. The industry in my country tends to adopt the three technical systems of iDEN, TETRA and FHMA. These three technical systems have their own advantages. TETRA adopts open signaling and has flexible networking; iDEN is more Mature, while FHMA is fresh in design. Among them, the iDEN system and the TETRA system are two systems recommended by the Ministry of Information Industry of my country's "digital trunking mobile communication system system" in the electronics industry. TETRA is a standard formulated by E...

AI Technical Summary

Problems solved by technology

[0004] 1) The TETRA system adopts the TD / FDMA multiplexing method. For channels with different carrier frequencies, a separate set of radio frequency transceivers and baseband processing equipment are required to receive them. The hardware structure of the base station is complex, which is not conducive to maintenance and cost reduction;

[0005] 2) Adopt baseband digital transceiver design, due to the inherent in-phase and quadrature branch amplitude and phase imbalance of analog quadrature demodulator or demodulator, it will lead to corresponding system performance loss;

[0006] 3) The degree of digitalization and softwareization of the system is low, the flexibility is poor, and it is not easy to expand and upgrade system functions;

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