Method and device for expanding dynamic range of reception channel in time division duplexing system

A technology of time-division duplex system and receiving channel, which is applied in the field of mobile communication, can solve problems such as rising system cost, high cost, and difficult system design, and achieve the effect of reducing requirements

Inactive Publication Date: 2006-07-05
ZTE CORP
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  • Abstract
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Problems solved by technology

[0007] Another object of the present invention is to provide a device for expanding the dynamic range of the receiving channel in a time-division duplex system, which partially overcomes the requirement for the dynamic range of the receiving subsystem in the existing TDD communication system, in order to improve the dynamic range of the transceiver circuit However, the use of more complex ALC control circuits or the use of high-cost high-linear devices causes the problem of rising system costs, and solves the difficulties in system design caused by the above problems

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  • Method and device for expanding dynamic range of reception channel in time division duplexing system
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  • Method and device for expanding dynamic range of reception channel in time division duplexing system

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Embodiment Construction

[0039] The structural block diagram of the device (time-division duplex linear switch low-noise amplifier) ​​for expanding the dynamic range of the receiving channel in the time-division duplex system of the present invention is as follows figure 1 As shown, it mainly consists of the following five parts: RF transceiver switch 101, RF front-end signaling channel 102, RF front-end linear low noise amplifier 103, receiving frequency conversion and RSSI circuit 104, and baseband control circuit 105.

[0040] The radio frequency transceiving switch 101 is used for switching between transceiving channels. The main function is to complete the time slot conversion of the sending and receiving path according to the needs of the system so that the TDD system can complete the time division duplex function of sending and receiving switching.

[0041] The linear low-noise amplifier 103 mainly performs linear low-noise amplification on the radio frequency signal, so that the amplified leve...

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Abstract

The device includes at least transmitter receive (T-R) switch, front end sending channel in radio frequency, front end linear low noise amplifier in radio frequency, indication circuit of receiving frequency conversion and receiving field intensity of signal, and baseband control circuit. The method includes steps: baseband control circuit sends the control signal to control T-R switch in radio frequency to set T-R switch in state of receiving channel; linear low noise amplifier magnifies signal from T-R switch, and its output signal is inputted to the said indication circuit; the indication circuit magnifies converted frequency, and outputs intermediate frequency signal, and outputs indication signal; modulating signal, baseband control circuit controls T-R switch by using field intensity indication signal of received signal. If input signal is in radio frequency, baseband control circuit switches channel to sending channel.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method and device for receiving a large dynamic range in a base station system based on a TDD (Time-divisionduplex) working mode. Background technique [0002] A high-performance receiver system has become an indispensable and important component in mobile communication systems of various communication systems. With the continuous development of modern mobile communication technology, the transmission distance of the communication system is getting farther and farther. In order to receive the transmission signal of the mobile station normally when the communication distance is long, and to prevent the mobile station and other interference signals from being disturbed by the mobile station when the communication distance is short The blocking of the receiver puts forward higher and higher requirements on the dynamic and other indicators of the receiving system. [0003] At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40H04B1/44
Inventor 余敏德王颜何树海
Owner ZTE CORP
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