Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multivariate position random polar MCP-EBPSK (Multivariate Continuous Phase-Extended Binary Phase Shift Keying) modulation and demodulation method

A MCP-EBPSK, CP-EBPSK technology, applied in the field of information modulation and demodulation, MCP-EBPSK modulation and demodulation with random polarity of multiple positions

Inactive Publication Date: 2012-07-04
SOUTHEAST UNIV
View PDF8 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the sidebands of the power spectrum of the CP-EBPSK modulated signal fail to meet the stricter requirement of less than -60dB at this time, mainly because the sidebands contain relatively high discrete spectrum (ie line spectrum) components

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
  • Multivariate position random polar MCP-EBPSK (Multivariate Continuous Phase-Extended Binary Phase Shift Keying) modulation and demodulation method
  • Multivariate position random polar MCP-EBPSK (Multivariate Continuous Phase-Extended Binary Phase Shift Keying) modulation and demodulation method
  • Multivariate position random polar MCP-EBPSK (Multivariate Continuous Phase-Extended Binary Phase Shift Keying) modulation and demodulation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0062] 1. MCP-EBPSK modulator with multiple positions and random polarity

[0063] Figure 7 It is the realization block diagram of the multi-ary system MCP-EBPSK signal modulator of described random polarity, and described modulator comprises a pseudo-random sequence generator, a waveform sample storage module, a clock generator, a digital-to-analog converter (DAC ), and an optional digital filter. Its working process is as follows:

[0064] 1) The pseudo-random sequence generator uses the pseudo-random number ξ∈{-1, 1} generated by it to control the sign of the phase modulation index Δ, which has only two possible values ​​-1 and +1, namely (2) The phase modulation polarity of non-"0" data in formula or (3).

[0065] 2) The waveform sample storage module has the functions of a read-only memory (ROM) and a multiplexer (MUX) at t...

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 discloses a multivariate position random polar MCP-EBPSK (Multivariate Continuous Phase-Extended Binary Phase Shift Keying) modulation and demodulation method, which is based on a corrected random polar continuous phase-extended binary phase shift keying modulation mode. The method involves a multivariate position random polar MCP-EBPSK modulator and a multivariate position random polar MCP-EBPSK signal demodulator. The multivariate position random polar MCP-EBPSK modulator is used for carrying out corrected random polar continuous phase keying to different phase modulation periods of sine wave carriers according to multivariate information symbols; and the multivariate position random polar MCP-EBPSK signal demodulator comprises an impulse filter used for highlighting the phase modulation information of received signals and eliminating the polar change of the received signals so that the demodulation performance is not influenced by the modulation of the multivariate position random polar. In the invention, the transmission rate and the spectrum utilization rate of a random polar CP-EBPSK communication system are multiplied by modulation signals, and the system has narrow occupied bandwidth, wide code rate application range, good demodulation performance and good flexibility for use.

Description

technical field [0001] The invention relates to information modulation and demodulation in digital communication, in particular to an MCP-EBPSK modulation and demodulation method of multi-position random polarity, which belongs to the technical field of digital information transmission with high spectral efficiency. Background technique [0002] The rapidly growing demand for broadband wireless services puts forward higher and higher requirements for wireless communication, which directly leads to more and more crowded radio frequencies in the air, especially with the third generation (3G) and fourth generation (4G) broadband mobile With the development of communication networks, the contiguous spectrum of lower frequency bands is almost exhausted. The auction price for the right to use 10MHz spectrum for 20 years in Europe has reached 4 billion euros. In my country, it is difficult to buy the most favorable frequency and bandwidth with money. Therefore, like energy and wat...

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 Applications(China)
IPC IPC(8): H04L27/20H04L27/22
Inventor 吴乐南靳一冯熳邓蕾
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com