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Method and device for estimating narrowband interference as well as receiving equipment thereof

A technology for narrowband interference and signal reception, applied in the field of communications, can solve problems such as narrowband interference estimation errors, and achieve the effects of improving performance, solving estimation errors, and accurate prediction results

Active Publication Date: 2011-03-16
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] Embodiments of the present invention provide a method, device, and receiving device for estimating narrowband interference, which are used to solve the problem of narrowband interference caused by the introduction of empty subcarriers used as guard frequency bands in the existing PEF-based narrowband interference elimination method Forecasting the problem of estimation error

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  • Method and device for estimating narrowband interference as well as receiving equipment thereof
  • Method and device for estimating narrowband interference as well as receiving equipment thereof
  • Method and device for estimating narrowband interference as well as receiving equipment thereof

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] figure 1 A flow chart of a method for estimating narrowband interference provided by an embodiment of the present invention, such as figure 1 As shown, the method of the present embodiment includes the following steps:

[0028] Step 100, performing sampling rate conversion processing of the ratio of the sampling rate of the effective...

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Abstract

The invention provides a method and device for estimating narrowband interference as well as receiving equipment thereof. The method comprises the following steps: carrying out sampling rate conversion on a received signal to generate a null subcarrier signal, wherein, the sampling rate is the specific value of the number of effective subcarriers to the total number of subcarriers, and the received signal is sent by an OFDM (orthogonal frequency division multiplexing) transmitting device; and carrying out narrowband interference signal prediction on the null subcarrier signal by an error prediction filter to obtain a narrowband interference prediction signal. In the embodiment of the invention, before predicting the narrowband interference signal in the received signal by the error prediction filter, sampling rate conversion is carried out on the received signal, wherein, the sampling rate is the specific value of the number of the null subcarriers to the number of the effective subcarriers, thus effectively eliminating interference of the introduced null subcarriers on an effective subcarrier signal, effectively solving the problem of estimation error of the narrowband interference signal caused by introduction of the null subcarriers, and improving the performance of an OFDM receiving device.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular, to a method, device and receiving device for estimating narrowband interference. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) is a broadband communication technology that has been widely used in the field of wireless communication. in a wireless communication system. [0003] An OFDM system generally includes an OFDM transmitting device and an OFDM receiving device. In the OFDM transmitting device, the data to be sent will be modulated in mutually orthogonal subcarriers by using Inverse Fast Fourier Transform (IFFT for short), and will be sent to the OFDM receiving device. However, in the OFDM receiving device, after the received signal is processed by decyclic prefix, FFT transformation, equalization, and signal judgment, it will be demodulated to obtain the original transmitted data. If there is narrow-...

Claims

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Application Information

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IPC IPC(8): H04L25/02H04L25/03H04L27/26
CPCH04J11/0066H04L27/2647H04L27/2633H04L27/26522
Inventor 杨赞赵玉萍刘青
Owner HUAWEI TECH CO LTD
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