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Channel estimation method, channel estimation device and receiver

A channel estimation and channel response technology, applied in the field of communication, can solve the problem of inaccurate channel estimation and achieve the effect of improving accuracy

Active Publication Date: 2016-09-14
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the presence of noise and interference in the real channel environment, the channel estimation is inaccurate

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  • Channel estimation method, channel estimation device and receiver
  • Channel estimation method, channel estimation device and receiver
  • Channel estimation method, channel estimation device and receiver

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Embodiment Construction

[0030] 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.

[0031] The channel estimation method provided by the embodiment of the present invention can be used to estimate an uplink channel or a downlink channel. Specifically, it may be performed by a receiving end of the reference signal. For example, in the uplink channel, the receiving end may receive the reference signal sent in the uplink chann...

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Abstract

Provided are a channel estimation method, a channel estimation device and a receiver. The method includes: performing channel estimation on a received reference signal to acquire a first channel response of the reference signal in a frequency domain; transforming the first channel response into a time domain to acquire a second channel response of the reference signal in the time domain; filtering the power delay spectrum of each path in the time domain to acquire the average power of each path in the time domain; determining a path with an average power lower than a set threshold to be a virtual path; removing the channel response of the virtual path from the second channel response to acquire a third channel response; and transforming the third channel response into the frequency domain to acquire a fourth channel response of the reference signal. The embodiments of the present invention realize an increase of the accuracy of channel estimation.

Description

technical field [0001] The present invention relates to communication technology, in particular to a channel estimation method, a channel estimation device and a receiver. Background technique [0002] After the data is transmitted by the transmitting end, it propagates through the wireless channel and reaches the receiving end. Various interference factors in the wireless channel will affect the transmitted data. Therefore, the data received by the receiving end may be larger than the data transmitted by the transmitting end. Not the same. Channel estimation is usually required to equalize the received data and recover the data by overcoming the influence of the channel. At present, the reference signal known by the receiving end is usually transmitted while transmitting the data signal, and the receiving end estimates the channel response experienced by the reference signal according to the received reference signal and the known reference signal, and then obtains the cha...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L27/26
CPCH04L25/0212H04L25/022H04L25/0224
Inventor 李琦
Owner HUAWEI TECH CO LTD