Unlock instant, AI-driven research and patent intelligence for your innovation.

Frequency domain equalization method of multi-ary continuous phase modulation based on chaotic interleaving

A phase modulation and frequency domain equalization technology, applied in the field of communications, can solve the problems of inability to use multi-level continuous phase modulation, low system spectrum utilization, and reduce system complexity, so as to improve the transmission rate and spectrum utilization, reduce Bit error rate, the effect of improving reliability

Active Publication Date: 2019-10-11
XIDIAN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of this method are: this method is only suitable for binary continuous phase modulation, and cannot be used for multi-ary continuous phase modulation, and the system spectrum utilization rate is low
However, the shortcomings of this method are: this method increases the system bit error rate while reducing the system complexity, and the system performance is poor under the multipath fading channel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Frequency domain equalization method of multi-ary continuous phase modulation based on chaotic interleaving
  • Frequency domain equalization method of multi-ary continuous phase modulation based on chaotic interleaving
  • Frequency domain equalization method of multi-ary continuous phase modulation based on chaotic interleaving

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] Refer to attached figure 1 Shown flow chart of the present invention, the detailed steps of the present invention are as follows:

[0039] Step 1, symbol mapping.

[0040] Send information bit sequence.

[0041] According to the Gray code symbol mapping rule, the received information bit sequence is subjected to Gray code symbol mapping. The gray code symbol mapping operation rule means that the first sign bit in the information bit sequence remains unchanged, and the remaining sign bits are sequentially XORed with the previous sign bit to obtain the Gray code symbol sequence.

[0042] Step 2, continuous phase modulation.

[0043] The obtained Gray code symbol sequence is subjected to multi-ary continuous phase modulation to obtain a modulated signal.

[0044] The multi-ary continuous phase modulation is accomplished according to the following formula:

[...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an m-ary continuous phase modulation frequency domain equalization method based on chaos interleaving, an solves the problems of high complexity and low frequency spectrum utilization rate, transmission rate and reliability in a communication system combining continuous phase modulation and frequency domain equalization in the prior art. The m-ary continuous phase modulation frequency domain equalization method based on chaos interleaving, which is disclosed by the invention, comprises the main implementing steps of: (1) symbol mapping; (2) continuous phase modulation; (3) chaos interleaving; (4) sampling; and (5) frequency domain equalization. The invention adopts a method for directly carrying out oversampling frequency domain equalization on an m-ary continuous phase modulation signal, and the method effectively eliminates multipath interference of a multipath fading channel and meanwhile, improves the frequency spectrum utilization rate and the transmission rate of the system. The invention simultaneously adopts a chaos interleaving method, and the method, by changing a sequence of a signal sample sequence, reduces correlation between signal sample points, reduces an error rate of transmitting a signal by the multipath channel and improves reliability of the system.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a method for combining chaotic interleaved multi-ary continuous phase modulation CPM (Continuous Phase Modulation) and single-carrier frequency domain equalization in the technical field of digital communication. The invention can be used in technical fields such as mobile communication, satellite communication, military tactical communication, etc., and realizes wireless communication transmission with high frequency spectrum utilization rate, high power efficiency and high transmission rate. Background technique [0002] At present, in domestic and foreign communication systems, the binary continuous phase modulation CPM (Continuous Phase Modulation) frequency domain equalization method is generally used, or the multi-binary continuous phase modulation non-coherent detection method is used to improve the spectral efficiency, power efficiency and reliability of the sy...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03H04B1/10H04L1/00
Inventor 任光亮夏浩文张会宁张阳王奇伟仙冰冰肖涛辛莉
Owner XIDIAN UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com