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Receiver and method for receiving wireless signal

A receiver, signal technology, applied in the direction of shaping network, multiplexing communication, electrical components, etc. in transmitter/receiver, can solve receiver performance impact, analog-to-digital converter overload, receiver communication interruption, etc. problem, to achieve the effect of ensuring the cancellation effect, suppressing the interference signal, and improving the performance

Active Publication Date: 2008-07-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the process of realizing the present invention, the inventor found the following problems in the prior art: the method of using a bandpass filter to suppress the receiver interference signal in the prior art, although the interference outside the bandwidth of the useful signal is suppressed, the useful signal Interference within the bandwidth is not suppressed
However, when the carrier signal is amplified, the interference signal is also amplified. The amplified interference signal may be greater than the highest point of the dynamic range of the ADC and exceed the dynamic range of the ADC, which will overload the ADC and cause the performance of the receiver to be affected. If it is serious, it will cause the communication interruption of the receiver

Method used

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  • Receiver and method for receiving wireless signal
  • Receiver and method for receiving wireless signal
  • Receiver and method for receiving wireless signal

Examples

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example 1

[0134] Referring to FIG. 16 , it is a flow chart example 1 of a method for receiving wireless signals according to an embodiment of the present invention. The method includes the following steps:

[0135] Step 1601, divide the signal to be processed input into the receiver into a main channel signal and a feedforward branch signal.

[0136] Step 1602, performing delay compensation processing on the main channel signal to obtain a signal after delay compensation processing. This step is optional.

[0137] Step 1603: Perform notch processing on the carrier signal in the feedforward branch signal to obtain a signal after notch processing.

[0138] Step 1604, use the digital IQ signal selected after the amplitude and phase correction to perform amplitude and phase compensation on the notched signal to obtain an amplitude and phase compensated signal.

[0139] This step may specifically include: under the working parameter configuration, according to the change of the useful sign...

example 3

[0168] Refer to 18, which is the third example of the flow chart of the method for receiving wireless signals according to the embodiment of the present invention. The method includes the following steps:

[0169] Step 1801, divide the signal to be processed input into the receiver into a main channel signal and a feedforward branch signal.

[0170] Step 1802, performing delay compensation processing on the main channel signal to obtain a signal after delay compensation processing.

[0171] Step 1803, performing attenuation processing on the feedforward branch signal to obtain an attenuated signal. This step is optional.

[0172] Step 1804, converting the feedforward branch signal into a digital signal.

[0173] Step 1805, down-convert the converted digital signal into a baseband signal.

[0174]Step 1806: Perform decimation and filtering on the baseband signal to obtain a signal after decimation and filtering.

[0175] Step 1807, performing notch processing on the carrier...

example 4

[0186] Referring to FIG. 19 , it is a fourth flowchart example of a method for receiving wireless signals according to an embodiment of the present invention. The method includes the following steps:

[0187] Step 1901, using the change between the useful signal and the interference signal in the digital IQ signal selected after the amplitude-phase correction, adaptively calculate the optimal amplitude-phase compensation coefficient;

[0188] Step 1902, according to the optimal amplitude and phase compensation coefficient, generate a digital signal that contains an interference signal but does not contain a useful signal within the bandwidth of the useful signal used for cancellation.

[0189] Step 1903, converting the generated digital signal from digital to analog, and performing filtering processing on the converted signal, and the obtained filtered signal is that the bandwidth of the useful signal used for cancellation contains interference signals. An analog signal that d...

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Abstract

The embodiment of the invention discloses a receiver, comprising an interference cancellation module and a multidrop rectification and pointwise switching module. The interference cancellation module is used for acting the cancellation process on a processing signal by utilizing a digital in-phase and quadrature IQ signal feedback by the multidrop rectification and pointwise switching module, and the signal after the cancellation process is output to the multidrop rectification and pointwise switching module; the multidrop rectification and pointwise switching module is used for acting the multidrop rectification spreliminary treatment on the signal which is input by the interference cancellation module, the phase-amplitude correction is acted on the processed signal, one digital IQ signal after the phase-amplitude correction is selected according to the switching strategy and is feedback to the interference cancellation module, and the selected digital IQ signal is output. The embodiment of the invention also discloses a method for receiving a radio signal. The embodiment of the invention greatly reduces the interference signal within desired signal bandwidth, and effectively increases the performance of the receiver.

Description

technical field [0001] The invention relates to wireless receiving technology, in particular to a receiver and a method for receiving wireless signals. Background technique [0002] In a mobile communication base station, a receiver is required to receive wireless signals. In order to improve communication capacity, multi-carrier receivers are often used in mobile communication base stations, that is, a single radio frequency channel contains multiple wireless carriers, more specifically, in some links of the radio frequency channel such as a coaxial cable or a pair of differential lines The signal contains multiple carriers. Referring to FIG. 1 , it is a schematic diagram of carrier configuration of a multi-carrier receiver in the prior art. In the figure, fc is the center, and the five carriers within the bandwidth B are all useful signals. [0003] The multi-carrier configuration of the multi-carrier receiver is different according to the specific conditions of the mobi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/69H04J11/00H04L27/26H04L25/02H04L25/03
Inventor 叶四清唐海正吕劲松杨刚华
Owner HUAWEI TECH CO LTD
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