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Method and device for modulating and adjusting sending terminal and sending terminal

An adjustment method and adjustment device technology, applied in the direction of adjusting transmission rate, adjusting channel coding, digital transmission system, etc., can solve the problems of inaccurate SNR estimation, poor modulation adjustment effect, and inability to accurately reflect the change of noise, etc., to achieve Improve accuracy, improve the effect of transmission effect

Active Publication Date: 2013-06-12
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the SNR estimation of the channel by the receiving end is not accurate and cannot accurately reflect the change of noise, the modulation adjustment effect of the transmitting end based on the SNR estimation result of the channel by the receiving end is not good

Method used

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  • Method and device for modulating and adjusting sending terminal and sending terminal
  • Method and device for modulating and adjusting sending terminal and sending terminal
  • Method and device for modulating and adjusting sending terminal and sending terminal

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Embodiment Construction

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0052] figure 1 It is a flow chart of a modulation adjustment method at a transmitting end provided by an embodiment of the present invention. Such as figure 1 As shown, the method for adjusting modulation at the sending end provided in this embodiment can be specifically applied to a process of dynamically adjusting modulation parameters of the...

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PUM

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Abstract

The embodiment of the invention provides a method and device for modulating and adjusting a sending terminal and the sending terminal. The method for modulating and adjusting the sending terminal comprises the steps of determining the retransmission request rate of each set of sub-channels according to a received retransmission request rate via at least two sets of sub-channels, determining at least one set of sub-channel of which the retransmission request rate is not 100%; determining the noise change information according to an initial signal to noise ratio margin of the at least one set of sub-channel, and adjusting the signal to noise ratio margin of each set of sub-channel at a receiving terminal according to the noise change information at the receiving terminal. By the method and device for modulating and adjusting the sending terminal and the sending terminal, the accurate dynamic adjustment of the modulation parameters at the sending terminal is realized, and the transmission effect of a communication system is improved.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a modulation adjustment method and device for a sending end, and a sending end. Background technique [0002] With the continuous development of communication technology, users have higher and higher expectations and requirements for data transmission. Efficiency and reliability are the two most basic requirements of users for data transmission. [0003] The bit-carrying capacity of a channel in a communication system is related to the Signal-to-Noise Ratio (SNR for short), and when the noise in the channel increases, the SNR will decrease, thereby reducing the bit-carrying capacity of the channel. In the prior art dynamic channel adaptive modulation technology, the receiving end estimates the SNR of the channel, and feeds back the estimation result to the sending end, so that the sending end adjusts the modulation parameters. However, since the SNR estimat...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/206H04L1/0003H04L1/0009H04L1/1819H04L1/1893
Inventor 石操
Owner HUAWEI TECH CO LTD
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