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
CN1797968AInactive Publication Date: 2006-07-05ZTE CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZTE CORP
Publication Date
2006-07-05
Estimated Expiration
Not applicable Β· inactive patent

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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.
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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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