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CDMA (Code Division Multiple Access) communication method based on harmonic modulation technology

A code division multiple access and modulation technology technology, applied in multiplex communication, code division multiplexing system, modulated carrier system and other directions, can solve the problems of waste of spectrum resources, neglect of harmonic components, etc., to improve utilization rate, the effect of increasing the capacity

Inactive Publication Date: 2020-04-17
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, it will undoubtedly cause a great waste of spectrum resources
Because in the traditional code division multiple access communication method, only the fundamental frequency is used for communication, and the role of harmonic components is ignored

Method used

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  • CDMA (Code Division Multiple Access) communication method based on harmonic modulation technology
  • CDMA (Code Division Multiple Access) communication method based on harmonic modulation technology
  • CDMA (Code Division Multiple Access) communication method based on harmonic modulation technology

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with specific embodiment:

[0034] Think about the natural communication between humans, for 7 billion people, its frequency bandwidth is only 20Hz-20kHz! All sounds of nature such as noise, animals, wind, trees, etc. only occupy this bandwidth. But humans have no trouble identifying them. For example, in a concert, there are many different instruments playing the same melody, but people can identify each instrument. The reason is that each instrument is playing the same pitch (same fundamental frequency), but the pattern of harmonics is different. This shows that, in fact, harmonics can also carry information, not only the fundamental frequency that is currently commonly used can carry information.

[0035] Based on this, if figure 2 As shown, the present embodiment sets forth a method for CDMA communication based on harmonic modulation technology, specifically as follows:

[0036]User signals a...

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Abstract

The invention discloses a CDMA (Code Division Multiple Access) communication method based on THE harmonic modulation technology. The method comprises the following steps that: dividing a user signal by using mutually orthogonal address code sequences, forwarding information between users and controlling the forwarding by a base station, and performing duplex communication by using a frequency forforward transmission and a frequency for reverse transmission respectively, wherein the duplex communication adopts fundamental frequency and harmonic wave for information transmission. The information transmission process comprises the following steps: firstly, modulating different types of information, then respectively loading the modulated information on different harmonic components or component combinations, and finally demodulating fundamental frequency and harmonic information received by a receiving end to obtain all transmitted information. According to the invention, the informationtransmission capability of the harmonic waves is fully utilized, the utilization rate of the frequency spectrum is greatly improved, and the capacity of communication users under the same carrier frequency is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a code division multiple access communication method based on harmonic modulation technology. Background technique [0002] my country's frequency band division is an administrative division, which is different from the comparative market dominance. In Europe and the United States, frequency bands are used for auction. For example, in the 3G era, the three major operators in my country have already administratively divided the corresponding frequency bands. The rest are all rush services, and European and American operators are not so happy. They first need to obtain licenses for this frequency band. For example, the 3G spectrum in the UK was auctioned for 22 billion pounds, and the German one was as high as 45 billion U.S. dollars. , can be described as sky-high. Why is spectrum so expensive? Because currently available spectrum resources are limited. We know that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J13/00H04L5/02H04L5/14
CPCH04J13/004H04L5/14H04L5/026H04L5/0016H04L27/28H04L27/2627H04J11/003H04B1/707H04B1/7103H04L5/143
Inventor 马建国周绍华
Owner GUANGDONG UNIV OF TECH
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