Spatial Coupling Codes for Multiple-Access Communications

2019 Fiscal Year Final Research Report

• Project/Area Number: 16K06373
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Communication/Network engineering
• Research Institution: Doshisha University
• Principal Investigator: Cheng Jun 同志社大学, 理工学部, 教授 (00388042)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Keywords: 空間結合符号 / 多重接続通信路 / 符号理論 / 無線通信

Outline of Final Research Achievements

We developed new spatial coupled codes to improve the spectrum efficiency for wireless communication systems. For the point-to-point communications, we proposed three kinds of spatial coupled codes, and optimized these codes. Numerical analysis and computer simulation show that decoding performance of these codes approach the theoretic limit. Moreover, we developed a kind of spatial coupled codes for multiple-access communication systems. The proposed mulit-user spatial coupled codes are universal codes that have capacity-approaching performance on various communication scenarios, such as various numbers of users, various channel conditions, and various sum-rates.

Free Research Field

通信工学

Academic Significance and Societal Importance of the Research Achievements

This project developed some new channel codes, which approach the theoretical limit of information transmission and greatly improve the spectrum efficiency for wireless communication systems.