A device for improving the dynamic range of a receiver and its application method

A dynamic range and receiver technology, applied in electrical components, transmission systems, etc., can solve the problems of complex structure and application, and achieve the effect of improving dynamic range, reducing peak-to-average ratio, and simple structure
CN104811216BActive Publication Date: 2017-08-29UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2017-08-29

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Abstract

The invention discloses a device for improving the dynamic range of a receiver and a method for using the device. The device includes a receiving antenna module, a compression module, a receiving channel module, an ADC, and a digital recovery module; the receiving antenna module is connected to the compression module, and the compression module Connect to the receiving channel module, the receiving channel module is connected to the ADC, and the ADC is connected to the digital recovery module; the compression module compresses the amplitude of the large signal, and approximately linearly amplifies the small signal; the digital recovery module is used to obtain the The signal undergoes the inverse operation of the compression module. The present invention compresses the amplitude of the large signal through the compression module, and approximately linearly amplifies the small signal, thereby reducing the peak-to-average ratio of the received signal and improving the dynamic range of the receiver; the received digital signal is mapped according to the inverse of the compression module by using a lookup table The operation restores the digital signal corresponding to the original received signal, which greatly reduces the amount of calculation; it is suitable for high-power signals and broadband signals, and has a simple structure.
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Description

technical field

[0001] The invention relates to a conversion device from analog signal to digital signal and its application method in the field of digital communication, in particular to a device for improving the dynamic range of a receiver and its application method. Background technique

[0002] In a full-duplex system, since the self-interference is much stronger than the received signal, it exceeds the dynamic range of the receiver, causing the receiver to saturate. To reduce the dynamic range of self-interfering signals, there are three main existing methods:

[0003] 1. Reconstruct the self-interfering signal in the analog domain and then subtract it from the signal received by the antenna at the front end of the receiver.

[0004] 2. Estimate the self-interference signal in the digital domain, up-convert the estimated signal to a radio frequency, and then subtract it from the signal received by the antenna at the front end of the receiver.

[0005] 3. The transmit...

Claims

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