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Method for filtering orthogonal frequency division multiplexing channel estimation results and the device thereof

A technology of channel estimation and orthogonal frequency division, applied in the field of channel estimation, can solve problems such as poor performance and complex implementation, achieve good filtering performance, simple implementation, and small amount of calculation

Inactive Publication Date: 2010-06-23
ZTE CORP
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Problems solved by technology

[0015] The main purpose of the present invention is to provide a method for frequency domain channel estimation filtering to solve the problem of complex implementation or poor performance of frequency domain channel estimation filtering in the prior art

Method used

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  • Method for filtering orthogonal frequency division multiplexing channel estimation results and the device thereof
  • Method for filtering orthogonal frequency division multiplexing channel estimation results and the device thereof
  • Method for filtering orthogonal frequency division multiplexing channel estimation results and the device thereof

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Embodiment Construction

[0037] In order to make the implementation of the filtering of the OFDM channel estimation result simpler and obtain better filtering performance, in the embodiment of the present invention, according to figure 2 The shown process processes the OFDM channel estimation results, and the specific steps are as follows:

[0038] Step 21: Transform the time domain synchronization symbols received by the terminal equipment into frequency domain synchronization symbols.

[0039] Step 22: Calculate the frequency domain impulse response sequence according to the frequency domain synchronization symbol;

[0040] Step 23: Adjust the coefficient of the least mean square adaptive filter according to the frequency domain impulse response sequence;

[0041] Step 24: Obtain the coefficients of the frequency domain filter of the data symbol channel estimation result according to the coefficients adjusted in step 23;

[0042] Step 25: Use the frequency domain filter of the data symbol channel estimation ...

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Abstract

The invention provides a method for filtering orthogonal frequency division multiplexing channel estimation results and the device thereof, which is used for addressing the problems of complicated implementation or poorer performance of the filtration of the channel estimation results in the prior art. In an embodiment, the method is described as follows: a time-domain synchronization symbol received by a terminal is transformed into a frequency-domain synchronization symbol; the frequency-domain shock response sequences are calculated based on the frequency-domain synchronization symbol; theleast adaptive filter coefficient is adjusted based on the frequency-domain shock response sequences; the coefficient of the data symbol channel estimation frequency-domain filter is obtained based on the adjusted coefficient; the OFDM channel estimation is filtered with the data symbol channel estimation frequency-domain filter. In the embodiment, the corresponding device is provided. Based on the technical proposal of the method for filtering orthogonal frequency division multiplexing channel estimation results and the device thereof, the obtained OFDM channel estimation frequency-domain filter has less computation amount, simpler implementation and better filtering performace.

Description

Technical field [0001] The present invention relates to the field of channel estimation in communication and information technology, and in particular to a method and device for filtering an OFDM channel estimation result. Background technique [0002] The State Administration of Radio, Film and Television promulgated the China Mobile Multimedia Broadcasting Industry Standard in October 2006, and decided to adopt the STiMi, a mobile TV reception standard independently developed by my country, which will be implemented on November 1, 2006. It is the first domestic independent research and development system for mobile phones, personal digital assistants PDA (Personal Digital Assistant), MP3, MP4, digital cameras, notebook computers and other mobile terminals. It uses S-band satellite signals to achieve integrated coverage of “world and earth”, and Roaming, supports 25 sets of TV programs and 30 sets of radio programs. China Mobile Digital Multimedia Broadcasting CMMB (China Mobil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04J11/00
CPCH04L25/022H04L27/2647H04L25/0234H04L5/0048
Inventor 邱宁李强陈力曹南山张涛游月意
Owner ZTE CORP
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