Method and system for secure and anti jamming wireless communication with high spectral efficiency
First Claim
1. A secure wireless communication system and method offering low probability of exploitation and anti jamming features to the communication link, the system comprising:
- a pseudo random polarization shift keying modulation method which employs the State of Polarization of an electromagnetic wave as the modulation parameter;
a polarization agile antenna system which comprises of a signal processor and a microstrip array to generate, transmit and receive the desired polarizations;
a transmitter which comprises of a signal processor and/or Field Programmable Gate Array for mapping data onto a specific State of Polarization, the transmitter generates the required signals of appropriate amplitude and phase for feeding the polarization agile antenna structure and receives feedback from the receiver to adaptively decide the constellation points and their transmission power aimed at offering higher jamming margin; and
a receiving system which employs a cross polarization interference canceller, a Least squares based algorithm for channel estimation, an adaptive polarization nulling algorithm for anti jamming and other necessary algorithms for efficient reception of the digital information.
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Abstract
Invention presented here relates to Low Probability of Exploitation and Anti Jamming communication system offering high spectral efficiency. The object of the present invention is achieved by hopping in polarization domain and by employing an adaptive polarization-nulling algorithm (FIG. 18, H [2,2]) to detect and eliminate jamming signal. The use of signals which hops or spreads in polarization domain does not need wide frequency spectrum due to which, the said modulation when employed at the physical layer offers and extremely secure and survivable wireless communication at very high data rates.
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Citations
12 Claims
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1. A secure wireless communication system and method offering low probability of exploitation and anti jamming features to the communication link, the system comprising:
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a pseudo random polarization shift keying modulation method which employs the State of Polarization of an electromagnetic wave as the modulation parameter; a polarization agile antenna system which comprises of a signal processor and a microstrip array to generate, transmit and receive the desired polarizations; a transmitter which comprises of a signal processor and/or Field Programmable Gate Array for mapping data onto a specific State of Polarization, the transmitter generates the required signals of appropriate amplitude and phase for feeding the polarization agile antenna structure and receives feedback from the receiver to adaptively decide the constellation points and their transmission power aimed at offering higher jamming margin; and a receiving system which employs a cross polarization interference canceller, a Least squares based algorithm for channel estimation, an adaptive polarization nulling algorithm for anti jamming and other necessary algorithms for efficient reception of the digital information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification