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Method for improving signal-to-noise ratio of TD-SCDMA terminal transmission signal

A technology for TD-SCDMA and transmitting signals, which is applied in the field of improving the signal-to-noise ratio of TD-SCDMA terminals, and can solve the problems of reducing the signal-to-noise ratio of the transmitting signal at the antenna end, so as to achieve the effect of increasing the probability of success and improving the signal-to-noise ratio

Inactive Publication Date: 2010-08-18
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These interferers are in-band and degrade the signal-to-noise ratio of the transmitted signal at the antenna end

Method used

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  • Method for improving signal-to-noise ratio of TD-SCDMA terminal transmission signal
  • Method for improving signal-to-noise ratio of TD-SCDMA terminal transmission signal
  • Method for improving signal-to-noise ratio of TD-SCDMA terminal transmission signal

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] image 3 The flowchart of an embodiment of the method for improving the signal-to-noise ratio of a TD-SCDMA terminal transmitting signal of the present invention is shown. See image 3 , combined below image 3 Each step in the method of this embodiment is described in detail.

[0023] Step S30: Obtain the TDMA burst rising curve and the TDMA burst falling curve of the terminal power amplifier.

[0024] Step S32: Smoothly adjust the TDMA burst rising curve within the transmit power switching time template stipulated in the 3GPP TS 25.102 protocol, so that the transmit power of the terminal power amplifier slowly rises from the minimum to the maximum.

[0025] The purpose of smooth adjustment is to reduce the interference in the passband caused by the TDMA burst rising curve, and to avoid the direct increase of the transmit power of the power ...

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Abstract

The invention discloses a method for improving signal-to-noise ratio of a TD-SCDMA terminal transmission signal, which improves the signal-to-noise ratio of the transmission signal of an antenna terminal. The technical scheme is as follows: the method comprises the following steps: (1) obtaining the TDMA bursting rising curve and the TDMA bursting depression curve of a terminal power amplifier; (2) carrying out smooth adjustment to the TDMA bursting rising curve in a transmitting power switch time template to ensure that the transmitting power of the terminal power amplifier slowly rises to be the maximum from the minimum; and (3) carrying out mirror image processing on the TDMA bursting depression curve of the terminal power amplifier according to the TDMA bursting rising curve. The invention is applied in the mobile communication field.

Description

technical field [0001] The invention relates to a method for improving the signal-to-noise ratio of a mobile terminal's transmitted signal, in particular to a method for improving the signal-to-noise ratio of a TD-SCDMA terminal's transmitted signal. Background technique [0002] TD-SCDMA is a strict power control system. The purpose of system closed-loop power control is to make the signal-to-noise ratio of the transmitted signals of all terminals in the entire cell reach the base station equal to the target value of the base station's desired signal-to-noise ratio. When the base station detects that the signal-to-noise ratio of the signal transmitted by a terminal in the cell to the base station is too high, the base station will send a TPC command word to the terminal to request the terminal to lower the transmit power; , the base station will request the transmit power of the terminal to be increased. [0003] Obviously, the basis of the entire closed-loop power control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24
Inventor 郭为
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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