Supercharge Your Innovation With Domain-Expert AI Agents!

Direct sequence ultra wide band multi-user detection method based on minimum mean squared error and artificial fish-swarm joint

A minimum mean square error, multi-user detection technology, applied in the field of multi-user detection, can solve the problems of poor real-time performance, high complexity, and low detection performance of the system, and achieve strong real-time performance, high detection performance, and low computational complexity. Effect

Inactive Publication Date: 2013-08-28
HARBIN INST OF TECH
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem of poor real-time performance of the system and low detection performance caused by the high complexity of the existing direct sequence ultra-wideband multi-user detection method, the present invention provides a direct sequence ultra-wideband based on minimum mean square error and artificial fish-swarm combination multi-user detection method

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
  • Direct sequence ultra wide band multi-user detection method based on minimum mean squared error and artificial fish-swarm joint
  • Direct sequence ultra wide band multi-user detection method based on minimum mean squared error and artificial fish-swarm joint
  • Direct sequence ultra wide band multi-user detection method based on minimum mean squared error and artificial fish-swarm joint

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0038] Specific implementation mode 1. Combination figure 1 Illustrate this specific embodiment, based on the minimum mean square error and artificial fish shoal joint direct sequence ultra-wideband multi-user detection method, it is realized by the following steps:

[0039] Step 1. Obtain a direct-sequence ultra-wideband signal, and simultaneously input the direct-sequence ultra-wideband signal into K matched filters in a cooperative working state, and obtain the matched filtering results y of K users i ; The K users are in one-to-one correspondence with the K matched filters;

[0040] The cross-correlation coefficient matrix of K matched filters is: R=(r ij ) K×K , where r ij >>|r ij |, i, j=1, 2,...K, i≠j, K is a positive integer;

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 provides a direct sequence ultra wide band multi-user detection method based on minimum mean squared error and artificial fish-swarm joint, relating to the field of signal detection. The invention solves the problems of poor system real-time and low detection performance caused by high complexity of the traditional direct sequence ultra wide band multi-user detection method. The multi-user detection method provided by the invention comprises the steps of: firstly, primarily detecting a direct sequence ultra wide band signal through a matched filter; secondly, detecting by using a suboptimal minimum mean squared error to obtain a suboptimal solution of multi-user detection; and finally, by using the suboptimal solution as an initial value, optimizing by using an artificial fish-swarm algorithm to obtain a performance close to the optimal multi-user detection. The invention is suitable for a multi-user detection process with higher requirements on error rate performance and real-time.

Description

technical field [0001] The invention relates to the field of signal detection, in particular to a multi-user detection method based on minimum mean square error and artificial fish school combination. Background technique [0002] Direct Sequence Ultra-wideband (DS-UWB) is one of the modulation methods of ultra-wideband wireless communication, and its signal waveform is: [0003] S ( k ) ( t ) = Σ j = - ∞ ∞ Σ n = 0 N s - 1 d j ( k ) g ...

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): H04B1/7105
Inventor 尹振东吴芝路宗志远庄树峰匡运生
Owner HARBIN INST OF TECH
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