Investigation on Operations of a Secure Communication System Based on the Chaotic Phase Shift Keying Scheme

Sandhu, G.S.; Berber, Stevan

doi:10.1109/icita.2005.164

Cited by 20 publications

(13 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Traditionally, signal spreading and user information encoding in direct sequence CDMA reverse and forward links have been based on application of short and long pseudo random sequences with good orthogonal characteristics, Walsh functions or wavelets [1,2,3]. In spite of the fact these sequences are semi-deterministic they spread signals in frequency domain and thus increase security in signal transmission and enhance resistance to jamming.…”

Section: Introductionmentioning

confidence: 99%

Reverse CDMA link based on noise-like spreading sequences and fading mitigation

Berber

Zhan

2009

Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wireless

View full text Add to dashboard Cite

This paper presents a theoretical model of a reverse CDMA link that uses noise-like spreading sequences in the case when AWGN and flat fading are present in the channel. It is known fact that the fading can be mitigated by the use of a block interleaver/deinterleaver structure. However, how to mitigate fading in a CDMA link that uses noise-like spreading sequences is not investigated and reported yet. For the proposed model, the expressions for the probability of error are derived and compared with the previously derived expression for the system that uses binary and non-binary chaotic sequences. It was shown that the degradation in the BER performances of the CDMA system in the presence of fading can be reduced applying interleaver/deinterleaver blocks to be close to the level of AWGN influence.Theory. KeywordsNoise based CDMA, probability of error derivation, non-binary spreading sequences, noise-like sequences.

show abstract

Section: Introductionmentioning

confidence: 99%

Reverse CDMA link based on noise-like spreading sequences and fading mitigation

Berber

Zhan

2009

Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wireless

View full text Add to dashboard Cite

show abstract

“…In past research reports, chaos systems have been an attractive topic for their potential applications in secure communication [29][30][31][32]. In recent years, digital chaos signals have been extensively used in commercial applications, such as multimedia systems, mobile and wireless communications [33][34][35]. In [36], by using XOR logic operation, a chaotic watermark was obtained between the binary watermark and the binary chaotic image, and then the chaotic watermark was embedded into an order less image of each block of the least significant bit.…”

Section: Introductionmentioning

confidence: 99%

Finite-Time Chaos Suppression of Permanent Magnet Synchronous Motor Systems

Hou

2014

Entropy

View full text Add to dashboard Cite

show abstract

“…The performance of CPSK, in terms of system capacity and BER characteristics, has been shown to be superior to that of CSK [4]. In CPSK, a single chaotic sequence is used as the information carrier, requiring only one chaotic sequence generator per user.…”

Section: B Chaos-based Communication Systemmentioning

confidence: 99%

“…The system presented in this paper uses the digital modulation method of chaotic phase shift keying (CPSK), as proposed by Sandhu and Berber in [4]. The performance of CPSK, in terms of system capacity and BER characteristics, has been shown to be superior to that of CSK [4].…”

Section: B Chaos-based Communication Systemmentioning

confidence: 99%

See 1 more Smart Citation

DSP Prototype of a Chaos-Based Multi-User Communication System: Design and Performance Analysis

Berber

2006

African Journal of ICT

View full text Add to dashboard Cite

Abstract-This paper presents the implementation of a multi-user chaos-based communication system in DSP (digital signal processor) technology. The system is based on the chaotic phase shift keying (CPSK) digital modulation scheme, where chaotic signals are used as the spreading sequences of a CDMA (code division multiple access) system.Using chaotic signals offers the advantages of increased security and higher system capacity compared with conventional sequences. The aim of this hardware implementation was to enable a comparison against analytical performance results for CPSK. The transceiver prototype was implemented on a 32-bit floating-point TigerSHARC DSP. Its bit error rate (BER) characteristics were measured in the presence of additive white Gaussian noise. The prototype achieves excellent BER performance, matching that of theoretical CPSK. The effects of the limited number precision of the hardware platform are thus negligible.However, due to the limited concurrency of DSP, the multi-user system only supports low data rates. Despite this, the prototype demonstrates that the CPSK scheme is a promising and viable CDMA option for the future.Index Terms -Code-division Multiple Access (CDMA), multi-user communication, chaos based PSK, DSP design.

show abstract

Investigation on Operations of a Secure Communication System Based on the Chaotic Phase Shift Keying Scheme

Cited by 20 publications

References 4 publications

Reverse CDMA link based on noise-like spreading sequences and fading mitigation

Reverse CDMA link based on noise-like spreading sequences and fading mitigation

Finite-Time Chaos Suppression of Permanent Magnet Synchronous Motor Systems

DSP Prototype of a Chaos-Based Multi-User Communication System: Design and Performance Analysis

Contact Info

Product

Resources

About