Performance analysis of OCDMA-WDM-PON system with chaotic logistic-map spread spectrum sequences

2008 ◽  
Author(s):  
Liwei Yang ◽  
Guochou Shou ◽  
Zongjue Qian ◽  
Yihong Hu ◽  
Tetsuya Miki
Keyword(s):  
Performance Analysis ◽  
Spread Spectrum ◽  
Logistic Map ◽  
Chaotic Logistic Map ◽  
Wdm Pon

OCDMA-WDM-PON with Two-level chaotic Logistic-map as spread spectrum sequence

2008 ◽  
Author(s):  
Liwei Yang ◽  
Guochu Shou ◽  
Zongjue Qian ◽  
Yihong Hu ◽  
Tetsuya Miki
Keyword(s):  
Spread Spectrum ◽  
Logistic Map ◽  
Chaotic Logistic Map ◽  
Wdm Pon

Chaotic logistic map, parabola, and gravity

2019 ◽  
Author(s):  
Matheus Pereira Lobo
Keyword(s):  
Logistic Map ◽  
Chaotic Logistic Map

I am trying to connect gravity with chaos via the parabola in the logistic map.

Anti-jamming performance analysis of optimal chaotic spread spectrum sequences

2010 ◽  
Vol 30 (10) ◽  
pp. 2843-2845 ◽  
Author(s):  
Shi-biao HE ◽  
Dong-mei LUO ◽  
Cheng GU
Keyword(s):  
Performance Analysis ◽  
Spread Spectrum

scholarly journals An Image Encryption Algorithm with Total Diffusion

2018 ◽  
Vol 11 (1) ◽  
pp. 15-25
Author(s):  
Jakub Oravec ◽  
Ján Turán ◽  
Ľuboš Ovseník
Keyword(s):  
Image Encryption ◽  
Logistic Map ◽  
Encryption Algorithm ◽  
Diffusion Stage ◽  
Suitable Combination ◽  
Image Pixels ◽  
Encrypted Images ◽  
Two Stages ◽  
Image Encryption Algorithm ◽  
Chaotic Logistic Map

Abstract This paper proposes an image encryption algorithm which uses four scans of an image during the diffusion stage in order to achieve total diffusion between intensities of image pixels. The condition of total diffusion is fulfilled by a suitable combination of techniques of ciphertext chaining and plaintext related diffusion. The proposed encryption algorithm uses two stages which utilize chaotic logistic map for generation of pseudo-random sequences. The paper also briefly analyzes approaches described by other researchers and evaluates experimental results of the proposed solution by means of commonly used measures. Properties of our proposal regarding modifications of plain images prior to encryption or modifications of encrypted images prior to decryption are illustrated by two additional experiments. The obtained numeric results are compared with those achieved by other proposals and briefly discussed.

SPREAD SPECTRUM COMMUNICATION VIA CHAOS

1999 ◽  
Vol 09 (01) ◽  
pp. 155-213 ◽  
Author(s):  
MAKOTO ITOH
Keyword(s):  
Performance Analysis ◽  
Computer Simulations ◽  
Spread Spectrum ◽  
Binary Data ◽  
Spread Spectrum Communication ◽  
And Performance

A new scheme is proposed for spread spectrum communication which transmits both analog and binary data via chaotic carriers. The proposed systems have some standard properties of spread spectrum communication. Some computer simulations and performance analysis are given to examine the validity of this scheme.

Design of Logistic Map-Based Spreading Sequence Generation for Use in Wireless Communication

2015 ◽  
pp. 81-121 ◽  
Author(s):  
Katyayani Kashayp ◽  
Kandarpa Kumar Sarma ◽  
Manash Pratim Sarma
Keyword(s):  
Wireless Communication ◽  
Spread Spectrum ◽  
Logistic Map ◽  
Chaotic Sequence ◽  
Wireless Channel ◽  
Computational Time ◽  
Spreading Sequence ◽  
Sequence Generation ◽  
Critical Issues ◽  
Code Division Multiple

Spread spectrum modulation (SSM) finds important place in wireless communication primarily due to its application in Code Division Multiple Access (CDMA) and its effectiveness in channels fill with noise like signals. One of the critical issues in such modulation is the generation of spreading sequence. This chapter presents a design of chaotic spreading sequence for application in a Direct Sequence Spread Spectrum (DS SS) system configured for a faded wireless channel. Enhancing the security of data transmission is a prime issue which can better be addressed with a chaotic sequence. Generation and application of chaotic sequence is done and a comparison with Gold sequence is presented which clearly indicates achieving better performance with simplicity of design. Again a multiplierless logistic map sequence is generated for lower power requirements than the existing one. The primary blocks of the system are implemented using Verilog and the performances noted. Experimental results show that the proposed system is an efficient sequence generator suitable for wideband systems demonstrating lower BER levels, computational time and power requirements compared to traditional LFSR based approaches.

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