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Method and device for obtaining sending signals

A technology for sending and receiving signals, which is applied in the field of obtaining sent signals, and can solve the problems of low estimation accuracy of sent signals, low precision of covariance matrix, low precision of pilot channel response, etc.

Active Publication Date: 2016-08-10
ZTE CORP
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  • Abstract
  • Description
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Problems solved by technology

[0006] In the existing method, due to the relatively low precision of the filtered pilot channel response, the covariance matrix of the noise estimated from the pilot channel response is low in precision, and thus the estimation precision of the transmitted signal is low

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  • Method and device for obtaining sending signals
  • Method and device for obtaining sending signals

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Embodiment Construction

[0043] In order to facilitate the understanding of those skilled in the art, the following further description of the present invention with reference to the accompanying drawings cannot be used to limit the protection scope of the present invention. It should be noted that the embodiments in this application and various modes in the embodiments can be combined with each other if there is no conflict.

[0044] See figure 1 , The present invention proposes a method for acquiring transmission signals, including:

[0045] Step 100: Filter the pilot channel response of each carrier after noise reduction in the time domain.

[0046] In this step, a sliding average method can be used to filter the pilot channel response of each carrier after noise reduction in the time domain. That is, filter the pilot channel response of each carrier after noise reduction in the time domain according to formula (1).

[0047] H ij ′ ( k ′ , l ′ ) = 1 M ( min ...

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Abstract

The invention discloses a method and device for obtaining sending signals. The method comprises following steps of filtering pilot channel response of each carrier after time domain noise reduction; obtaining the data channel response of each carrier according to the filtered pilot channel response of each carrier; calculating a covariance matrix of receiving signals according to the data channel response of each carrier; and calculating the sending signal of the carrier k and the sending signal of the carrier (k+1) according to the obtained data channel response of each carrier and the covariance matrix obtained by calculation, wherein the k is the index of the carrier. Through application of the scheme provided by the invention, the precision of the pilot channel response is improved by filtering pilot channel response of each carrier after time domain noise reduction; the estimation precision of the sending signals is improved; and because the precision of the covariance matrix of the receiving signals is higher than that of the covariance matrix of noises, the estimation precision of the sending signal is improved.

Description

Technical field [0001] The present invention relates to communication receiving technology, in particular to a method and device for acquiring transmission signals. Background technique [0002] Among the ways to combat fading in mobile communications, diversity reception is one of the effective measures often used. In a mobile environment, the fading of multiple signals received through different paths is different. Therefore, when using diversity reception, the probability that the strength of a certain received signal component is lower than the detection threshold is relatively high, and all received signals The probability that the intensity of the components is lower than the detection threshold is very low. Comprehensive utilization of each received signal component, it is possible to significantly improve the quality of the received signal. Therefore, diversity reception can improve the reliability of communication and is therefore widely used in mobile communications. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/03H04L25/02H04L27/26H04L1/06
Inventor 吴昊王美英王凯
Owner ZTE CORP
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