channel estimation method

A channel estimation and calculation result technology, applied in the field of channel estimation, can solve the problems of large signal energy loss, high algorithm complexity, poor channel estimation accuracy, etc., and achieve the effect of improving channel estimation accuracy, simplifying steps, and reducing impact

Active Publication Date: 2020-09-11
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology

The existing channel estimation method has a large signal energy loss, high algorithm complexity, the influence of white noise and impulse noise, and poor channel estimation accuracy

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[0012] Certain embodiments of the invention will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. Indeed, various embodiments of the invention may be embodied in many different forms and should not be construed as limited to these set forth embodiments; rather, these embodiments are provided so that this invention will satisfy applicable legal requirements.

[0013] In this specification, the various embodiments described below to describe the principles of the present invention are illustrative only and should not be construed as limiting the scope of the invention in any way. The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the present invention as defined by the claims and their equivalents. The following description includes numerous specific details to aid in understanding, but these shoul...

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Abstract

The invention provides a channel estimation method. The method comprises the following steps: separately performing conjugate overturning on a local training sequence and a received training sequence,and separately performing cyclic convolution operation with the local training sequence to obtain a first cyclic convolution operation result and a second cyclic convolution operation result; performing time domain noise elimination on the second cyclic convolution operation result via the good correlated characteristics of the training sequences; performing FFT transform on the first cyclic convolution operation result and the second cyclic convolution operation result subjected to the time domain noise elimination to the frequency domain to obtain a first frequency domain result and a second frequency domain result; extracting a value of corresponding frequency in the second frequency domain result the first frequency domain result to obtain a division operation result; and performing conjugate on the division operation result to obtain a channel estimation value.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a channel estimation method. Background technique [0002] In a communication system, due to the effects of multipath fading and noise, the signal received by the receiving end is often severely distorted. In order to effectively restore the original information sent by the sending end, channel estimation is required. Once the channel information is obtained through channel estimation, channel equalization can be performed based on the channel estimation information to compensate for the influence of channel fading. Among them, the accuracy of channel estimation has an important impact on channel equalization and signal detection. Existing channel estimation methods have large signal energy loss, high algorithm complexity, the influence of white noise and impulse noise, and poor channel estimation accuracy. Contents of the invention [0003] In view of the problems exi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L25/03
CPCH04L25/0202H04L25/022H04L25/0224H04L25/03159H04L25/03305
Inventor 彭吉生乔树山
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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