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Method and device for reducing mutual interference of multiple carriers

A mutual interference, multi-carrier technology, applied in the field of multi-carrier mutual interference processing, to achieve the effect of improving spectrum utilization, improving user experience, and improving service capacity

Inactive Publication Date: 2015-01-28
SHANGHAI ZTE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no solution to the mutual interference of multi-carriers in the wireless communication system in the industry

Method used

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  • Method and device for reducing mutual interference of multiple carriers
  • Method and device for reducing mutual interference of multiple carriers
  • Method and device for reducing mutual interference of multiple carriers

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Embodiment Construction

[0032] The basic idea of ​​the present invention is: in a multi-carrier system, especially between adjacent multi-carriers in the frequency domain, there will be mutual interference among the carriers. The invention adjusts the phase of the modulated signal of each carrier to control the interference between multi-carriers to the level that can correctly demodulate the effective signal in the modulated signal. Since the phase of the modulated signal is related to the carrier frequency and initial phase of the carrier, and the carrier frequency is basically planned by the communication system, it is a non-adjustable parameter. Therefore, the present invention mainly adjusts the initial phase of the modulated signal To reduce the interference between multiple carriers. The scheme of the invention is simple and practical to implement.

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further de...

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Abstract

A method for reducing mutual interference of multi-carrier includes: adjusting the phase of at least one modulated signal; judging whether baseband signals can be all demodulated correctly from each modulated signal, adjusting the phase of at least one modulated signal when the modulated signals which can not be demodulated correctly are present, until the baseband signals can be all demodulated correctly from each modulated signal; setting the current modulated signals as the output signals when the baseband signals can be all demodulated correctly. The present invention also discloses an apparatus for reducing mutual interference of multi-carrier. The present invention can improve the performance obviously under the circumstance of arranging the multi-carrier adjacent to each other, and makes the multi-carrier be operated simultaneously in the same radio signal coverage area, therefore greatly improving the frequency spectrum utilization ratio.

Description

technical field [0001] The invention relates to a processing technology for multi-carrier mutual interference in a communication system, in particular to a method and device for reducing multi-carrier mutual interference. Background technique [0002] At present, most wireless communication systems can support a multi-carrier working mode. The multi-carrier mode means that both transmission and reception will be combined waves of multiple single carriers. For example, for a CDMA2000lx communication system in the 800MHz frequency band, the bandwidth of a single carrier is 1.23MHz, and the center frequency interval of adjacent carriers is 1.23MHz, so when multiple carriers such as three carriers are adjacently configured, they are composed of three single carriers with a bandwidth of 1.23MHz A combined wave occupying a bandwidth of about 3.69MHz, the center frequencies of the three carriers can be set to 871.11MHz, 872.34MHz, 873.57MHz (or other frequencies). figure 1 It is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00
CPCH04L27/2626
Inventor 李凡龙毕文仲劳锦明
Owner SHANGHAI ZTE SOFTWARE CO LTD
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