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Method for designing cognitive high-speed wireless communication system under discrete spectrum condition

A communication system and spectrum analysis technology, applied in the direction of multi-frequency code system, etc., can solve problems such as the intensification of spectrum surplus contradiction, spectrum shortage, and insufficient development of spectrum utilization technology.

Inactive Publication Date: 2011-09-28
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fixed spectrum allocation method, the actual utilization rate of many allocated frequency bands is very low, which intensifies the contradiction between spectrum shortage and spectrum surplus
On the other hand, the development of efficient spectrum utilization technology is insufficient, and this is the most important way to improve the shortage of spectrum resources at present

Method used

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  • Method for designing cognitive high-speed wireless communication system under discrete spectrum condition
  • Method for designing cognitive high-speed wireless communication system under discrete spectrum condition
  • Method for designing cognitive high-speed wireless communication system under discrete spectrum condition

Examples

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Embodiment Construction

[0033] The data modulation system according to specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0034] figure 1 A data modulation system 1000 according to one embodiment of the present application is shown. The system 1000 includes an authorized frequency band analysis module 10 , an unlicensed frequency band analysis module 20 and a data modulation module 30 .

[0035] The authorized frequency band analysis module 10 performs spectrum analysis on the authorized frequency band of the communication system. The results obtained by the analysis are for example denoted f(A).

[0036] The unlicensed frequency band sensing module 20 perceives other frequency bands other than the above-mentioned licensed frequency bands by measuring wireless signal energy in the frequency domain, for example, the utilization of frequency bands used by departments such as electric power, amateur radio stations, geology a...

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Abstract

The invention discloses a method for designing a cognitive high-speed wireless communication system under a discrete spectrum condition, and particularly discloses a cognitive high-speed wireless communication system and method under a discrete spectrum condition. The system comprises an authorized frequency band analysis module, an unauthorized frequency band analysis module and a data modulating module, wherein the authorized frequency band analysis module is used for performing frequency spectrum analysis on authorized frequency bands of a communication system to obtain a first available frequency band; the unauthorized frequency band analysis module is used for analyzing other frequency bands of the communication system except the authorized frequency bands or the authorized frequency bands of at least one other system different from the communication system to obtain a second available frequency band; and the data modulating module is used for modulating data to be transmitted in an OFDM / OFDMA (Orthogonal Frequency Division Multiplexing / Orthogonal Frequency Division Multiple Access) mode based on the first available frequency band and the second available frequency band.

Description

technical field [0001] This application relates to spectrum sensing technology in wireless communication systems. Background technique [0002] Under the condition that 2G mobile communication can well meet the needs of voice communication, today's wireless communication technology is still developing rapidly, and its main goal is to meet the increasing demand for high-speed data rates. Traditional multiplexing technologies such as Time Division Multiplexing (TDM), Code Division Multiplexing (CDM), and Frequency Division Multiplexing (FDM), as well as technologies such as Orthogonal Frequency Division Multiplexing (OFDM), smart antennas, and link adaptation The comprehensive application provides a flexible configuration scheme for the design of high-speed wireless communication systems. [0003] Among these technologies, OFDM is more and more popular in the industry because of its high spectrum utilization rate and its ability to effectively overcome intersymbol interferenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
Inventor 张勇宋梅滕颖蕾沈哲夫戴超陈广泉
Owner BEIJING UNIV OF POSTS & TELECOMM
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