Apparatus, base station, terminal unit and method for obtaining signal-noise ratio and amplitude-noise ratio

A technology of signal-to-noise ratio and amplitude-to-noise ratio, applied in base stations and terminal equipment, a method to obtain signal-to-noise ratio and amplitude-to-noise ratio, in the field of devices, it can solve problems such as large amount of computation and different correction polynomials, and reduce load , reduce the amount of calculation, simplify the effect of the process of SNR and ANR

Active Publication Date: 2008-06-25
LEADCORE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0044] It can be seen that the current methods for obtaining SNR and ANR need to calculate and correct SNR and ANR respectively, and after calculating SNR and ANR, the correction operation for SNR and ANR will involve polynomial operations, and according to the SNR and ANR Different ranges of intervals require different correction polynomials, and the amount of calculation is very large

Method used

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  • Apparatus, base station, terminal unit and method for obtaining signal-noise ratio and amplitude-noise ratio
  • Apparatus, base station, terminal unit and method for obtaining signal-noise ratio and amplitude-noise ratio
  • Apparatus, base station, terminal unit and method for obtaining signal-noise ratio and amplitude-noise ratio

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Embodiment 1

[0088] In this embodiment, the ZF algorithm is used for linear joint detection. Due to the characteristics of the ZF algorithm, the amplitude R l T × A l = 1 , Among them, l represents the lth received data stream, in the ZF algorithm, R l T × A l = 1 It is true for all received data streams, therefore, in this embodiment, formula (13) is true:

[0089] ANR l = SNR l R l T × A l = SNR l - - - ...

Embodiment 2

[0102] In the present embodiment, adopt MMSE algorithm to carry out linear joint detection, because the characteristic of MMSE algorithm, formula (17) holds true:

[0103] R l T × A l = ρ l ρ l + 1 - - - ( 17 )

[0104] in:

[0105] ρ l = 1 σ n 2 [ ( A ′ A + σ ...

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Abstract

The invention relates to the communication filed, in particular to a method, a device, a base station and terminal equipment for obtaining the signal noise ratio and the amplitude noise ratio, and for simplifying the process of obtaining the SNR and the ANR. The invention conducts linear joint detection on the received data, and obtains the SNR or the ANR of the data according to the result of the linear joint detection; and estimates the corresponding ANR according to the SNR and the algorithm type of the linear joint detection; or estimates the corresponding SNR according to the ANR and the algorithm type thereof, thus, the technical proposal of the invention only needs to obtain one of the SNR value or the ANR value, according to the value, the other value can be estimated; while obtaining the two values simultaneously is not needed, so that the amount of corresponding operation is reduced, the processes of obtaining the SNR and the ANR are simplified, and the load of the corresponding device is lowered.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device, base station and terminal equipment for obtaining signal-to-noise ratio and amplitude-to-noise ratio. Background technique [0002] The base stations and terminals of the TD-SCDMA (Time Division Synchronized Code Division Multiple Access) system use linear joint detection technology to eliminate the MAI (Multiple Access Interference) of the received data. Incoming interference) and ISI (Inter-Symble Interference, inter-symbol interference), commonly used linear joint detection techniques include ZF (Zero Forcing, zero forcing) and MMSE (Minimum Mean Square Error, minimum mean square error) two algorithms, the formula ( 1) Given the baseband receiving signal model: [0003] e ~ = A × d + n - - - ( 1 ...

Claims

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Application Information

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IPC IPC(8): H04B1/707H04B7/005H04J13/02H04B1/7105H04L25/02
Inventor 闫东
Owner LEADCORE TECH
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