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Detection apparatus and method for receiving signal intensity indication

A technology of received signal strength and detection device, applied in the microwave field, can solve the problems of amplification control signal hopping, analog-digital conversion unit receiving data stream power hopping, bit error and other problems

Active Publication Date: 2014-12-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above problems, an embodiment of the present invention provides an RSSI detection device and method, aiming to solve the problem that the amplification control signal in the RSSI detection method in the prior art jumps when the bandwidth is switched, causing the analog-to-digital conversion unit to receive the data stream Power jumps, resulting in technical problems of bit errors

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  • Detection apparatus and method for receiving signal intensity indication
  • Detection apparatus and method for receiving signal intensity indication
  • Detection apparatus and method for receiving signal intensity indication

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Embodiment 1

[0024] figure 1 The structure of an RSSI detection device provided by the first embodiment of the present invention is shown. The detection device is located in the microwave receiving end. The detection device in this embodiment includes:

[0025] The amplifying unit 101 is configured to receive the modulated signal data stream from the microwave transmitting end, and amplify the modulated signal data stream according to the amplification control signal, and the amplification control signal is used to instruct the amplifying unit to perform the modulated signal data stream Send the amplified modulated signal data stream to the analog-to-digital conversion unit 102;

[0026] In this embodiment, the amplifying unit may be a VGA (Voltage Gain Amplifier, voltage controlled gain amplifier). VGA is a device that controls the gain of a voltage device. It has two inputs, one of which is a signal input, that is, the signal input from the microwave transmitting end. The modulated signal dat...

Embodiment 2

[0046] figure 2 The structure of an RSSI detection device provided by the second embodiment of the present invention is shown. The detection device is located in the microwave receiving end. The detection device in this embodiment includes:

[0047] The amplifying unit 201 is configured to receive the modulated signal data stream from the microwave transmitting end, and amplify the modulated signal data stream according to the amplification control signal, and the amplification control signal is used to instruct the amplifying unit to perform the modulated signal data stream. Send the amplified modulated signal data stream to the analog-to-digital conversion unit 202;

[0048] In this embodiment, the amplifying unit may be a VGA. The VGA is a voltage control device gain device with two inputs. One input is the signal input, that is, the modulated signal data stream from the microwave transmitting end, and the other is the control voltage. Input, the modulated signal data stream en...

Embodiment 3

[0076] image 3 The flow of an RSSI detection method provided by the third embodiment of the present invention is shown. The method in this embodiment includes the following steps:

[0077] S301: Receive a modulated signal data stream from a microwave transmitting end, and amplify the modulated signal data stream according to an amplification control signal, where the amplification control signal is used to indicate an amplification factor for the modulated signal data stream;

[0078] S302: Perform analog-to-digital conversion on the amplified modulated signal data stream to obtain a first digital signal data stream;

[0079] S303: Filter the first digital signal data stream.

[0080] In this embodiment, bandwidth-matched filtering is performed on the first digital signal data stream, and the bandwidth of the first digital signal data stream is the same as the bandwidth of the filter channel.

[0081] In order to achieve bandwidth-matched filtering, the bandwidth of the filter channel ...

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Abstract

Embodiments of the present invention provide a device and a method for detecting a received signal strength indicator (RSSI). The method comprises: receiving a modulated signal data stream from a microwave sending end, and amplifying the modulated signal data stream according to an amplification control signal, the amplification control signal being used for indicating an amplification multiple of the modulated signal data stream; performing analog-to-digital conversion on the modulated signal data stream after amplification, to obtain a first digital signal data stream; filtering the first digital signal data stream; performing power detection on the first digital signal data stream, to obtain a first average power value; performing power detection on the first digital signal data stream after being filtered, to obtain a second average power value; obtaining the amplification control signal according to the first average power value; and calculating to obtain an RSSI value according to the amplification control signal and the second average power value. The embodiments of the present invention perform power detection on the entire bandwidth of the first digital signal data stream, thereby preventing jump of the amplification control signal.

Description

Technical field [0001] The invention belongs to the field of microwaves, and in particular relates to a detection device and method for receiving signal strength indication. Background technique [0002] The Received Signal Strength Indicator (RSSI) function is an important function of the receiver in the microwave system. The RSSI function provides real-time received signal power indication and provides basic data input for some functions in the microwave system, such as network construction. Confirm whether the microwave equipment is installed with the correct judgment function. The accuracy and real-time requirements of RSSI are very high. The accuracy of RSSI is mainly reflected in whether the fluctuation range of the indicated RSSI indicator meets the requirements when the input power is stable. The real-time performance of RSSI is mainly reflected in when the external input signal power fluctuates regularly, for example, when the signal power is 100dB The speed of / s is b...

Claims

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Application Information

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IPC IPC(8): H04B17/00
CPCH04B17/00H03G3/3052H03G3/3078H04B17/318H04W52/245H04L27/2039
Inventor 李海
Owner HUAWEI TECH CO LTD
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