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Method for determining signal to noise ratio (SNR) of communication system

A communication system and signal-to-noise ratio technology, applied in the field of communication, can solve problems such as high complexity and insufficient resources, and achieve the effect of reducing complexity, reducing the number of calculations, and saving hardware resources

Inactive Publication Date: 2015-01-14
POTEVIO INFORMATION TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the SNR is calculated subcarrier by subcarrier according to the existing technology, the complexity is high, and the hardware implementation faces the problem of insufficient resources

Method used

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  • Method for determining signal to noise ratio (SNR) of communication system
  • Method for determining signal to noise ratio (SNR) of communication system
  • Method for determining signal to noise ratio (SNR) of communication system

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] In the embodiment of the present invention, the best pilot point of the RE where the PDSCH is located is firstly determined, so that the SNR of the best pilot point replaces the SNR of the RE where the PDSCH is located, which reduces the number of SNR calculations and reduces the complexity, thereby saving hardware resources.

[0036] See attached figure 1 It is a schematic flow chart of a method for determining a signal-to-noise ratio in a communication system, specifically including the following steps:

[0037] 101. Determine the best pilot point according to the position of the RE where the PDSCH is located.

[0038] In the schematic diagram of RB in the protocol, the horizontal axis represents the time domain, and the ve...

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Abstract

A method for determining signal to noise ratio (SNR) of a communication system comprises the steps that the best pilot frequency point is determined according to the position of an RE where a PDSCH is located; the SNR of the best pilot frequency point is calculated, and the SNR of the RE is equal to the SNR of the best pilot frequency point. By means of the method, the calculation frequency of the SNR is reduced, calculation complexity is obviously lowered, and hardware resources are saved.

Description

technical field [0001] The present application relates to the technical field of communication, and more specifically, to a method for determining a signal-to-noise ratio in a communication system. Background technique [0002] At the downlink receiving end of the LTE system, after estimating the channel parameters and noise variance results, it is necessary to perform equalization processing on each control channel and traffic channel respectively. The output of the equalization is the estimate of the transmitted signal and the subcarrier signal-to-noise ratio. [0003] Taking the spatial multiplexing system as an example, for a single subcarrier, the corresponding received data and channel estimation results are Y and H respectively, then use zero-forcing (ZF) or minimum mean square error detection algorithm (MMSE) for signal equalization and detection get an estimate of the transmitted signal Its formula is: [0004] X ^ ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04L27/26
Inventor 张瑞郑辰
Owner POTEVIO INFORMATION TECH CO LTD