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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 flexibility, improving service capacity, and improving performance

Active Publication Date: 2014-12-10
ZTE CORP
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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

[0035] 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.

[0036] 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 and device for reducing mutual interference between multiple carriers can markedly reduce the mutual interference between multiple carriers in a multi-carrier communication system. The method includes: adjusting the phase of a signal to be modulated; modulating a baseband signal onto the signal to be modulated; and judging whether the baseband signal can be demodulated correctly, if can not, getting on with adjusting the phase of the signal to be modulated, if can, accepting the signal to be modulated as a signal to be modulated of the baseband signal. The device includes: an adjusting unit for adjusting the phase of the signal to be modulated; a modulating unit for modulating the baseband signal onto the signal to be modulated; a demodulating unit for demodulating the baseband signal modulated by the modulating unit; a judgment unit for judging whether the base band signal can be correctly demodulated by the demodulating unit; and a determining unit for accepting the signal to be modulated as the signal to be modulated of the baseband signal when the judgment unit judges that the base band signal can be demodulated correctly.

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
CPCH04J11/0023
Inventor 毕文仲劳锦明李凡龙
Owner ZTE CORP
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