Chaos-Based Partial Transmit Sequence Technique for Physical Layer Security in OFDM-PON

Hu, Xiaonan; Yang, Xuelin; Shen, Zanwei; He, Hao; Hu, Weisheng; Chen, Bai

doi:10.1109/lpt.2015.2466092

Cited by 81 publications

(31 citation statements)

References 10 publications

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“…Chaotic-DFT data encryption is executed multi-fold, named chaotic subcarrier allocation, chaotic TS insertion and chaotic DFT matrix generation all are prearranged by digital chaotic sequences [29]. The typical M×M DFT matrix is assumed by F, then the matrix constraints are given by,…”

Section: Fig 2: Diagram Of Chaotic-dft Sequencementioning

confidence: 99%

PAPR Reduction and Encryption Based On Hybrid Optimized PTS and Chaotic-DFT Sequences in OFDM System

Sarkar¹,

Kumar²,

Maji³

2019

IJEAT

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In high-speed wireless applications, because of the high-speed compatibility of the OFDM, it is a significant signal processing approach. In general, an efficient spectral multicarrier modulation strategy is named OFDM, which gets impact via the issues of high PAPR. Because of the limited BW availability, the demand for high-speed applications is increasing. Due to the high data requirement, the various subcarriers are increased in OFDM, hence it made the difficult with PAPR (peak-to-average power ratio). To achieve better results by reducing the PAPR is the foremost problem on OFDM. In this paper, a hybrid optimized PTS is used to decrease the PAPR and the data will be encrypted by the DFT based chaotic sequences. A new Hybrid Whale Optimization and Moth Flame Optimization (HWOMFO) is introduced in this paper. It will generate a weighting factor for the PTS. PTS is the foremost strategy in OFDM for reducing the PAPR with low distortion. The minimum performance on computational complexity and PAPR achieved by this paper. The new combination of optimization approaches provides efficient best combination of phase rotational factors. The new hybrid optimization gives fast convergence quality and low complex and also this combination provides better than others. The proposed scheme is executed in MATLAB simulation and performance will be evaluated using parameters such as BER regards to SNR, complementary cumulative distribution function (CCDF) of PAPR and the outputs are associated depends on computation time. However, the experimental results show that compared with existing approaches, our proposed strategy gives better PAPR reduction with respect to SNR.

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Section: Fig 2: Diagram Of Chaotic-dft Sequencementioning

confidence: 99%

PAPR Reduction and Encryption Based On Hybrid Optimized PTS and Chaotic-DFT Sequences in OFDM System

Sarkar¹,

Kumar²,

Maji³

2019

IJEAT

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“…In terms of computation complexity of the proposed DFT-S-OFDM scheme, if compared with other PAPR optimization approaches such as PTS and SLM [3], [4], the DFT precoding algorithm contains neither optimization operations nor multiple IFFT operations, therefore it results in much lower computation complexity, as well as simpler transceiver and receiver [7], [8]. More importantly, the proposed secure DFT-S-OFDM scheme requires no additional sideband information to be generated and shared between the transceiver and receiver.…”

Section: Principlesmentioning

confidence: 99%

“…In (6), each of the chaotic sequences provides a conservative key space of $10 15 , which can be derived from Fig. 4(a), where only a small deviation ð$1 Â 10 À15 Þ of the initial value y 0 will make the chaos enter into an entirely different state [3]. In this proposed DFT-S-OFDM data encryption scheme, the 3-level independent encryption (fD y ;i g, fD z;i g and fD u;i g) offers a key space of $10 45 .…”

Section: Principlesmentioning

confidence: 99%

“…By virtue of the specific characteristics of chaos, i.e., the ergodicity, the pseudo randomness and the high sensitivity to the initial values, chaos-based secure transmission with reliable security in the physical layer has attracted much interest [3]- [5]. However, most of previous chaotic implementations in physical layer security for optical OFDM-PON ignore the data transmission performance.…”

Section: Introductionmentioning

confidence: 99%

“…However, most of previous chaotic implementations in physical layer security for optical OFDM-PON ignore the data transmission performance. The exceptional reports were the chaotic random partial transmit sequence (PTS) and selected mapping (SLM), but both of PTS and SLM schemes require redundant sideband information to be generated and shared between the transmitter and receiver, which reduces the effective data rate while increasing the computational complexity [3], [4].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Secure Transmission of Optical DFT-S-OFDM Data Encrypted by Digital Chaos

Shen¹,

Yang²,

He³

et al. 2016

IEEE Photonics J.

Self Cite

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This paper proposes and demonstrates a physical layer security-enhanced transmission scheme for discrete Fourier transform spread orthogonal frequency-division multiplexing (DFT-S-OFDM) signals in a passive optical network. During the DFT-S-OFDM transmission, the reconfigurable DFT matrix, the subcarrier allocation, and the training sequence for OFDM symbol synchronization are well encrypted by digital chaotic sequences generated via a 4-D hyperdigital chaos, which provides a huge key space of $10 45 . Secure transmission of 13.3-Gb/s encrypted DFT-S-OFDM signals is demonstrated over a 20-km standard single-mode fiber, which proves the excellent confidentiality of the proposed secure DFT-S-OFDM transmission. Moreover, the receiver sensitivity is improved ∼2 dB (BER@10 −3 ), which is due to the effective reduction of peak-to-average power ratio via DFT precoding. In addition, this scheme has the advantages of low computational complexity and has no requirement of redundant sideband information.Index Terms: Chaos cryptography, discrete Fourier transform (DFT), orthogonal frequency-division multiplexing (OFDM), peak-to-average power ratio (PAPR).

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Dynamic hyperchaotic key generation using optical orthogonal frequency division multiplexing‐based visible light communication networks

Alresheedi

Al‐Moliki

Al‐Harthi

et al. 2022

IEEJ Transactions Elec Engng

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This paper introduces an optical orthogonal frequency division multiplexing (OFDM)-based hyperchaotic key generation encryption approach that can improve confidentiality in visible light communication (VLC) networks. Using a hyperchaotic four-dimensional method, the bipolar real-valued OFDM signal can be used for constructing dynamic cypher keys modified at every frame over the communication time, resulting in a superior degree of protection against statistical and correlation attacks. In accordance with our findings, this approach decreases the ratio of peak-to-average power of the transmitted signal, and enhances the bit error rate efficiency and secrecy capacity of the OFDM-based VLC network, which improves confidentiality.

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Chaos-Based Partial Transmit Sequence Technique for Physical Layer Security in OFDM-PON

Cited by 81 publications

References 10 publications

PAPR Reduction and Encryption Based On Hybrid Optimized PTS and Chaotic-DFT Sequences in OFDM System

PAPR Reduction and Encryption Based On Hybrid Optimized PTS and Chaotic-DFT Sequences in OFDM System

Secure Transmission of Optical DFT-S-OFDM Data Encrypted by Digital Chaos

Dynamic hyperchaotic key generation using optical orthogonal frequency division multiplexing‐based visible light communication networks

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