Method and device for reducing multi-carrier mutual interference

A mutual interference and multi-carrier technology, applied in the field of multi-carrier mutual interference processing, to achieve the effect of improving flexibility, performance and business capacity

Active Publication Date: 2014-06-11
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 multi-carrier mutual interference
  • Method and device for reducing multi-carrier mutual interference
  • Method and device for reducing multi-carrier mutual interference

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Embodiment Construction

[0046] 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 present invention makes the performance index of the modulated signal corresponding to the multi-carrier meet the set performance index by adjusting the delay of the modulation signal input on each carrier. The scheme of the invention is simple and practical to implement.

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail by citing the following embodiments and referring to the accompanying drawings.

[0048] Transmitting signals in modern wireless communication systems is realized by modulating information, that is, a modulating signal, onto a modulated signal, where the modulated signal can be generated by a digitally controlled oscillator (NCO, Numerical Contro...

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Abstract

The disclosure discloses a method for reducing mutual interference of multi-carrier, comprising: adjusting the delay of at least one modulation signal; respectively modulating each adjusted modulation signal onto each modulated signal; and comparing the performance indices of modulated signals with set performance indices, wherein the delay of at least one modulation signal is adjusted when the set performance indices are not reached, until the performance indices of modulated signals reach the set performance indices, and each current modulated signal is set as an output signal, or each current modulation signal is set as an input signal when the set performance indices are reached. The disclosure further discloses an apparatus for reducing mutual interface of multi-carrier. The disclosure can improve the performance obviously under the circumstance of arranging the multi-carrier adjacent to each other, and enable the multiple carriers to operate simultaneously in the coverage area of one radio signal, thereby 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
CPCH04L27/2637H04J11/003H04L25/03821H04L2025/03414H04L25/03343H04L2025/03445H04B1/7097H04B2201/70706H04B2201/70719
Inventor 李凡龙毕文仲劳锦明
Owner ZTE CORP
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