Correlation-based optimal chirp rate allocation for chirp spread spectrum using multiple linear chirps

Kwang Yul Kim, Seung Woo Lee, Yu Min Hwang, Jae Seang Lee, Yong Sin Kim, Jin Young Kim, Yoan Shin

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A chirp spread spectrum (CSS) system uses a chirp signal which changes the instantaneous frequency according to time for spreading a transmission bandwidth. In the CSS system, the transmission performance can be simply improved by increasing the time-bandwidth product which is known as the processing gain. However, increasing the transmission bandwidth is limited because of the spectrum regulation. In this letter, we propose a correlation-based chirp rate allocation method to improve the transmission performance by analyzing the cross-correlation coefficient in the same time-bandwidth product. In order to analyze the transmission performance of the proposed method, we analytically derive the cross-correlation coefficient according to the time-bandwidth separation product and simulate the transmission performance. The simulation results show that the proposed method can analytically allocate the optimal chirp rate and improve the transmission performance.

Original languageEnglish
Pages (from-to)1088-1091
Number of pages4
JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
VolumeE100A
Issue number4
DOIs
Publication statusPublished - 2017 Apr 1
Externally publishedYes

Keywords

  • Bandwidth separation
  • Chirp rate allocation
  • Chirp spread spectrum
  • Cross-correlation coefficient
  • Multiple linear chirp

ASJC Scopus subject areas

  • Signal Processing
  • Computer Graphics and Computer-Aided Design
  • Applied Mathematics
  • Electrical and Electronic Engineering

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