Chaotic Standard Map Based Frequency Hopping OFDMA for Low Probability of Intercept

In frequency hopping (FH)-OFDMA, the transmitted symbols on all subcarriers are demodulated by FFT at once at the receiver. Thus, these symbols can be easily intercepted by an adversary radiometer when the number of simultaneous transmitting users is small. In this letter, we design a chaotic standa...

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Bibliographic Details
Published in:IEEE communications letters 2011-09, Vol.15 (9), p.1019-1021
Main Authors: JUNG, Junwoo, LIM, Jaesung
Format: Article
Language:English
Subjects:
Applied sciences
Bit error rate
Chaos theory
Exact sciences and technology
Frequency diversity
Frequency hopping
Indexes
Information, signal and communications theory
Interference
Modulation, demodulation
Multiplexing
OFDM
OFDMA
Radiometers
Radiometry
Receivers
Signal and communications theory
Signal to noise ratio
standard map
Subcarriers
Symbols
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission
Transmission and modulation (techniques and equipments)
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Summary:In frequency hopping (FH)-OFDMA, the transmitted symbols on all subcarriers are demodulated by FFT at once at the receiver. Thus, these symbols can be easily intercepted by an adversary radiometer when the number of simultaneous transmitting users is small. In this letter, we design a chaotic standard map (CSM) based FH pattern for low probability of intercept. Through the proposed scheme, more than two symbols of the same user can be shown in the same symbol period, or none. Moreover, the order of these symbols is mixed. It makes the radiometer difficult in intercepting these symbols, and thus, it achieves a low probability of intercept. We show that the proposed scheme satisfies requirements of a desired FH pattern.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2011.071811.110966