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Channel and noise estimation method, channel and noise estimation device

A channel estimation and noise estimation technology, which is applied in the field of channel and noise estimation device, channel and noise estimation, can solve the problems of no signal, noise correlation estimation, low accuracy and high complexity

Inactive Publication Date: 2016-12-28
MSTAR SEMICON SHANGHAI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the long-term research and development, the inventors of the present application found that in the prior art, there are problems of low accuracy and high complexity in the estimation methods of signal power and noise power in wireless communication systems, and there is no estimation method for signals between different receiving antennas. , the correlation of the noise is estimated

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

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no. 1 approach

[0093] see figure 1 , the first embodiment of the channel and noise estimation method of the present invention includes:

[0094] Step S101: performing channel estimation on the received signal to obtain an actual channel estimation value;

[0095] Perform channel estimation on the received signal to obtain the actual channel estimation value, including:

[0096] The channel estimation device performs channel estimation on signals received by at least one first receiving antenna and a second receiving antenna respectively to obtain corresponding actual channel estimation values in The values ​​are as follows:

[0097] H LS 1 = H ideal 1 + v 1 - - - ( 1 )

[0098] H LS 2 = ...

no. 2 approach

[0153] see figure 2 , the second embodiment of the channel and noise estimation method of the present invention includes:

[0154] Step S201: performing channel estimation on the received signal to obtain an actual channel estimation value;

[0155] Perform channel estimation on the signals received by the first receiving antenna and the second receiving antenna respectively to obtain corresponding actual channel estimation values

[0156] Step S202: Filtering the actual channel estimation value to obtain the filtered channel estimation value;

[0157] Use the first filter and the second filter to estimate the actual channel values ​​corresponding to the first receiving antenna and the second receiving antenna respectively Perform filtering to obtain the corresponding filtered channel estimate in, Indicates the actual channel estimate corresponding to the first receiving antenna The filtered channel estimate obtained after filtering by the first filter, Indicates...

Embodiment approach

[0173] see Figure 4 , an embodiment of the channel and noise estimation device of the present invention includes:

[0174] The channel estimation module 301 is configured to perform channel estimation on the received signal to obtain an actual channel estimation value. Wherein, the channel estimation module 301 is specifically configured to perform channel estimation on signals received by at least one first receiving antenna and a second receiving antenna to obtain corresponding actual channel estimation values The values ​​are as follows:

[0175] H LS 1 = H ideal 1 + v 1 - - - ( 1 )

[0176] H LS 2 = H ideal 2 + ...

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Abstract

The invention discloses a channel and noise estimation method. The channel and noise estimation method comprises the steps of carrying channel estimation on a received signal to obtain an actual channel estimation value, carrying out smoothing on the actual channel estimation value to obtain a smoothing channel estimation value, carrying out calculation according to the smoothing channel estimation value to obtain a biased noise power value, a biased signal power value, a biased noise correlation and a biased signal correlation, and carrying out calculation to obtain an unbiased noise power value, an unbiased signal power value, an unbiased noise correlation and an unbiased signal correlation according to the biased noise power value, the biased signal power value, the biased noise correlation and the biased signal correlation. The invention further discloses a channel and noise estimation device. Through the mode, the channel and noise estimation method and the channel and noise estimation device can reduce the complexity of signal estimation and noise estimation, and improve the precision of estimators.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a channel and noise estimation method and a channel and noise estimation device. Background technique [0002] In the Long Term Evolution (LTE) wireless communication system, the signal-to-noise ratio is an important index to measure the receiving performance of the communication system, and the signal-to-noise ratio is affected by estimated values ​​such as signal power and noise power, and the signal power, noise The accuracy of estimated values ​​such as power, signal, and noise correlation directly affects the demodulation results of subsequent demodulation modules in the communication system. [0003] In the long-term research and development, the inventors of the present application found that in the prior art, there are problems of low accuracy and high complexity in the estimation methods of signal power and noise power in wireless communication systems, and there is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L25/03
Inventor 辛凯诸烜程
Owner MSTAR SEMICON SHANGHAI