Supercharge Your Innovation With Domain-Expert AI Agents!

Construction method of multi-amplitude sequence set suitable for multiple access system

A technology of access system and construction method, applied in the direction of phase modulation carrier system, multiplex communication, electrical components, etc. Covering communication scenarios, low spectrum efficiency, etc., to achieve strong scalability and increase the capacity of accessible users

Pending Publication Date: 2022-04-12
HARBIN INST OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing traditional multiple access schemes have low spectrum efficiency and poor scalability, and cannot meet the needs of increasing the capacity of accessible users and meeting the requirements of short-latency and large-coverage communication scenarios at the same time. A method for constructing a multi-amplitude sequence set suitable for multiple access systems is proposed

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
  • Construction method of multi-amplitude sequence set suitable for multiple access system
  • Construction method of multi-amplitude sequence set suitable for multiple access system
  • Construction method of multi-amplitude sequence set suitable for multiple access system

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] Specific implementation mode 1: This implementation mode is applicable to the construction method of the multi-amplitude sequence set of the multiple access system. The specific process is as follows:

[0017] system model

[0018] Such as figure 2 As shown, taking the uplink system as an example, assuming that there are K users at the transmitter transmitting information to the base station at the same time, the bit streams transmitted by K users are assumed to be are of length N b ,Right now where 1≤k≤K, Represents a binary domain. The bit stream of each user is obtained after channel coding in 1≤n≤N c , N c is the encoded binary data length. The encoded data of each user is modulated by Binary Phase Shift Keying (BPSK), and the modulated symbols are mapped by a certain sequence and expressed as N s is the length of the symbol to be sent. Each user information is transmitted to the receiver through the multiple access channel, and the received signa...

specific Embodiment approach 2

[0029] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the multi-amplitude sequence MAS and the multi-amplitude sequence MAS set are obtained in the step 1; the specific process is:

[0030] According to the above system model, the present invention proposes a multi-amplitude sequence (hereinafter referred to as MAS) and a multi-amplitude sequence set (hereinafter referred to as MAS set), to realize the sequence mapping part ( figure 2 sequence mapping).

[0031] Let the sequence set be Ψ, the set Ψ contains T sequences, and the length of each sequence is L, that is

[0032] Ψ={e 1 ,e 2 ,...,e t ,...,e T} (3)

[0033] sequence e t The element inside is e t ={e t,1 ,e t,2 ,...,e t,l ,...e t,L}; 1≤t≤T; 1≤l≤L;

[0034] In formula (1), if the elements in each sequence are from the amplitude set Δ={Δ re ,Δ im}, that is, e t Inner element e t , l ∈Δ, then the set Ψ is called a multi-amplitude sequence MAS set, and each sequence in Ψ is...

specific Embodiment approach 3

[0040] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in the step 2, the multi-amplitude sequence MAS and the multi-amplitude sequence MAS set obtained in step 1 are constrained on the mapping relationship, and a completely unique translatable MAS is obtained. sets and δ-partially unique translatable MAS sets;

[0041] Perform power constraints on the multi-amplitude sequence MAS and multi-amplitude sequence MAS set obtained in step 1, obtain the average power of the sequences in the MAS set, and obtain equal-power MAS sets and non-equal-power MAS sets based on the average power;

[0042] The specific process is:

[0043] Step 21. Constrain the mapping relationship between the multi-amplitude sequence MAS and the multi-amplitude sequence MAS set obtained in step 1, and obtain a completely unique translatable MAS set and a δ-partially unique translatable MAS set;

[0044] Mapping constraints

[0045] When K users are at the symbol position l=...

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 a multi-amplitude sequence set construction method, in particular to a multi-amplitude sequence set construction method suitable for a multiple access system. The invention aims to solve the problems that the existing traditional multiple access scheme is lower in spectrum efficiency and poorer in expansibility, and cannot meet the requirements of improving the accessible user capacity and meeting the scene requirements of short-time delay and large-coverage communication at the same time. The method comprises the following steps of: 1, acquiring a multi-amplitude sequence MAS and a multi-amplitude sequence MAS set; 2, obtaining a completely unique translatable MAS set and a delta-part unique translatable MAS set; obtaining an equal-power MAS set and a non-equal-power MAS set; 3, constructing a completely unique translatable equipower MAS set; and 4, constructing a delta-part uniquely translatable non-equipower MAS set based on a total space search algorithm. The invention is applied to the technical field of multiple access in the field of wireless communication.

Description

technical field [0001] The invention relates to a method for constructing a multi-amplitude sequence set, which is used in the multiple access technology in the field of wireless communication. Background technique [0002] There are many orthogonal or non-orthogonal sequences in the field of wireless communication, and they are mostly used in technologies or scenarios such as multiple access, channel estimation, spread spectrum communication, and pseudorandom noise generation. When these sequences are applied to multiple access scenarios, they are generally regarded as identifiers for distinguishing multiple users, and the data of each user can be mapped according to certain rules by using these identifiers. [0003] The spectrum efficiency of traditional multiple access schemes represented by code division multiple access is low, and the spectrum efficiency of multiple access schemes using orthogonal spread spectrum sequences generally does not exceed 1. At the same time,...

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
IPC IPC(8): H04J7/00H04L27/18
CPCY02D30/70
Inventor 于启月宋柯浔李江炫
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