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Method for eliminating signal disturbance from transmitters in same frequency

A signal interference and transmitter technology, applied in the communication between multiple stations, electrical components, transmission systems, etc., can solve problems affecting the quality of network service, achieve the effect of improving service quality and eliminating interference

Inactive Publication Date: 2009-06-24
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] like figure 2 As shown, in the actual network operation, the Stimi single-frequency network system not only sends the service of the entire network, but also sends some services with regional differences. Different services interfere with each other, affecting the quality of network service

Method used

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  • Method for eliminating signal disturbance from transmitters in same frequency
  • Method for eliminating signal disturbance from transmitters in same frequency
  • Method for eliminating signal disturbance from transmitters in same frequency

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Embodiment Construction

[0026] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Such as image 3 and Figure 4 As shown, the method steps for eliminating the signal interference of the same-frequency transmitter are as follows:

[0028] 1. Generate a binary sequence according to the initialization information of the transmitter.

[0029] The initialization information includes network number, area number or program key.

[0030] Each transmitter or base station of the single frequency network is divided according to the region, and each transmitter or base station is assigned a different area number, and each different service program is assigned a different program key, plus initialization information such as the network number, Arranged in a certain order into a binary sequence.

[0031] A binary sequence is generated according to the network number, area number and program key of each different transmitter, a...

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Abstract

The invention discloses a method for eliminating signal interference of same-frequency transmitters. The steps are as follows: generate a binary sequence according to the initialization information of the transmitter; use the binary sequence as an initialization vector to generate a scrambling sequence; map the scrambling sequence A complex scrambling code sequence is generated, and the time slot data is scrambled by using the complex scrambling code sequence. The invention eliminates the interference of other same-frequency transmitter signals, improves the service quality at the network boundary, and effectively improves the service quality under the same time slot and different service conditions in the single-frequency network.

Description

technical field [0001] The present invention relates to an air interface (Air Interface) technology between a transmitter and a terminal in the field of mobile multimedia communication, and specifically relates to a method for eliminating signal interference of a same-frequency transmitter. Background technique [0002] Orthogonal Frequency Division Multiplexing (OFDM) is a new modulation technology that has emerged in recent years. It has the characteristics of high transmission rate, strong anti-multipath interference, and high spectrum efficiency. Using OFDM can realize high-speed wireless digital communication in complex channel environments. In the field of multimedia broadcasting technology, adopting OFDM technology has become a trend. At present, it has been practically applied in the fields of digital audio broadcasting (DAB, Digital Audio Broadcasting), digital video broadcasting (DVB, Digital Video Broadcasting) and wireless local area networks (WLAN, Wireless Loca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04B7/26
Inventor 方源立朱晓光王标
Owner ZTE CORP