1. Joint Secured and Robust Technique for OFDM Systems
- Author
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Arafat Al-Dweik, Ridha Hamila, Abdallah Shami, Maysam Mirahmadi, and Bayan S. Sharif
- Subjects
FOS: Computer and information sciences ,Structure-based ,Frequency-selective fading channels ,Novel techniques ,Orthogonal frequency-division multiplexing ,Computer science ,Computer Science - Information Theory ,Data_CODINGANDINFORMATIONTHEORY ,Communications system ,Multiple access interference ,Signal-to-noise ratio ,Time and frequencies ,Electronic engineering ,Fading ,Orthogonal frequency division multiplexing ,Robust transmission ,Information Theory (cs.IT) ,Telecommunication systems ,Noise-like signals ,Transmission (telecommunications) ,Key (cryptography) ,Bit error rate ,Frequency selective fading ,Robust technique ,Symmetric key cryptography ,Diversity scheme - Abstract
This work presents a novel technique for joint secured and robust transmission of orthogonal frequency division multiplexing (OFDM) based communication systems. The proposed system is implemented by developing a new OFDM symbol structure based on symmetric key cryptography. At the receiver side, data detection becomes infeasible without the knowledge of the secret key. For an intruder who tries to detect the data without the knowledge of the key, the signal will be a noise-like signal. In addition to the system security, theoretical and simulation results demonstrated that the proposed system provides time and frequency diversity, which makes the system highly robust against severe frequency-selective fading as well as other impairments such as impulsive noise and multiple access interference. For particular frequency-selective fading channels, the bit error rate (BER) improvements was about 15 dB at BER of 10E-4., Comment: This article has been submitted for possible publication at the IEEE ICC 2013
- Published
- 2012
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