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- Nachgewiesen in: USPTO Patent Grants
- Sprachen: English
- Patent Number: 10848,470
- Publication Date: November 24, 2020
- Appl. No: 16/180791
- Application Filed: November 05, 2018
- Claim: 1. An apparatus, comprising: at least one processor; and at least one non-transitory computer-readable memory communicatively coupled to the at least one processor, the at least one non-transitory computer-readable memory including a set of instructions stored thereon and executable by the processor for: producing a set of reference symbol values selected from a modulation symbol constellation; generating a linear transformation operator from information to be transmitted to a receiver; applying the linear transformation operator to the set of reference symbol values, thereby distorting the reference symbol values with respect to the information, to produce a transformed reference signal; and transmitting the transformed reference signal to the receiver, the receiver decoding the transformed reference signal to receive the information; wherein the linear transformation operator is generated with an encryption key, and the encryption key is employed by the receiver to decode the transformed reference signal to avoid interception by unintended receivers.
- Claim: 2. The apparatus recited in claim 1 , wherein the linear transformation operator further comprises a precoding matrix computed from channel measurements.
- Claim: 3. The apparatus recited in claim 2 , wherein the precoding matrix is a Multiple Input, Multiple Output (MIMO) precoding matrix.
- Claim: 4. The apparatus recited in claim 1 , wherein the transformed reference signal complies with a data transmission format for a cellular network, and the apparatus and the receiver communicate via a peer-to-peer network.
- Claim: 5. The apparatus recited in claim 1 , wherein the linear transformation operator comprises time-varying features based on at least one of the information and channel measurements.
- Claim: 6. The apparatus recited in claim 1 , wherein the set of reference symbol values comprises at least one of a predetermined data sequence known by both the apparatus and the receiver, symbol values received from a broadcast signal, and symbol values generated by an algorithm that is common to both the apparatus and the receiver.
- Claim: 7. A method, comprising: producing a set of reference symbol values selected from a modulation symbol constellation; generating a linear transformation operator from information to be transmitted to a receiver; applying the linear transformation operator to the set of reference symbol values, thereby distorting the reference symbol values with respect to the information, to produce a transformed reference signal; and transmitting the transformed reference signal to the receiver, the receiver decoding the transformed reference signal to receive the information; wherein the linear transformation operator is generated with an encryption key, and the encryption key is employed by the receiver to decode the transformed reference signal to avoid interception by unintended receivers.
- Claim: 8. The method recited in claim 7 , wherein the linear transformation operator further comprises a precoding matrix computed from channel measurements.
- Claim: 9. The method recited in claim 8 , wherein the precoding matrix is a Multiple Input, Multiple Output (MIMO) precoding matrix.
- Claim: 10. The method recited in claim 7 , wherein the transformed reference signal complies with a data transmission format for a cellular network, and a transmitter performing the method and the receiver communicate via a peer-to-peer network.
- Claim: 11. The method recited in claim 7 , wherein the linear transformation operator comprises time-varying features based on at least one of the information and channel measurements.
- Claim: 12. The method recited in claim 7 , wherein the set of reference symbol values comprises at least one of a predetermined data sequence known by both a transmitter performing the method and the receiver, symbol values received from a broadcast signal, and symbol values generated by an algorithm that is common to both the transmitter and the receiver.
- Claim: 13. A non-transitory computer-readable memory including a set of instructions stored thereon and executable by a processor for: producing a set of reference symbol values selected from a modulation symbol constellation; generating a linear transformation operator from information to be transmitted to a receiver; applying the linear transformation operator to the set of reference symbol values, thereby distorting the reference symbol values with respect to the information, to produce a transformed reference signal; and providing for transmitting the transformed reference signal to the receiver, the receiver decoding the transformed reference signal to receive the information; wherein the linear transformation operator is generated with an encryption key, and the encryption key is employed by the receiver to decode the transformed reference signal to avoid interception by unintended receivers.
- Claim: 14. The non-transitory computer-readable memory recited in claim 13 , wherein the linear transformation operator further comprises a precoding matrix computed from channel measurements.
- Claim: 15. The non-transitory computer-readable memory recited in claim 14 , wherein the precoding matrix is a Multiple Input, Multiple Output (MIMO) precoding matrix.
- Claim: 16. The non-transitory computer-readable memory, recited in claim 13 , wherein the transformed reference signal complies with a data transmission format for a cellular network, and a transmitter on which the processor resides and the receiver communicate via a peer-to-peer network.
- Claim: 17. The non-transitory computer-readable memory recited in claim 13 , wherein the linear transformation operator comprises time-varying features based on at least one of the information and channel measurements.
- Claim: 18. The non-transitory computer-readable memory recited in claim 13 , wherein the set of reference symbol values comprises at least one of a predetermined data sequence known by both a transmitter on which the processor resides and the receiver, symbol values received from a broadcast signal, and symbol values generated by an algorithm that is common to both the transmitter and the receiver.
- Patent References Cited: 6031913 February 2000 Hassan et al. ; 6686879 February 2004 Shattil ; 7430257 September 2008 Shattil ; 8051181 November 2011 Larson et al. ; 8122505 February 2012 Verma ; 8180057 May 2012 Delaney et al. ; 8594026 November 2013 Hirschman et al. ; 8670390 March 2014 Shattil ; 2002/0067757 June 2002 Philips et al. ; 2003/0163697 August 2003 Pabla et al. ; 2005/0091399 April 2005 Candan et al. ; 2005/0228659 October 2005 Mitlin ; 2006/0034177 February 2006 Schrempp ; 2006/0146802 July 2006 Baldwin et al. ; 2008/0232238 September 2008 Agee ; 2009/0003591 January 2009 Murakami ; 2009/0005094 January 2009 Lee et al. ; 2009/0017829 January 2009 Laroia et al. ; 2011/0033044 February 2011 Britz ; 2011/0170574 July 2011 Ripple et al. ; 2011/0173696 July 2011 Dynes et al. ; 2012/0231739 January 2012 Chen et al. ; 2013/0078954 March 2013 Fan et al. ; 2013/0095845 April 2013 Lim et al. ; 2013/0286972 October 2013 Dateki ; 2014/0038657 February 2014 Jo et al. ; 2015/0049713 February 2015 Lan
- Other References: J.L. Brooks, et al., “Coherence Multiplexing of Fiber-optic Interferometric Sensors,” Journal of Lightwave Technology, vol. LT-3, No. 5, Oct. 1985. cited by applicant ; A.O. Hero, “Secure space-time communication,” IEEE Transactions on Information Theory, vol. 49, No. 12, pp. 3235-3249, Dec. 2003. cited by applicant ; R.M.Narayanan, “Sensing and Communications Using Ultrawidenband Random Noise Waveforms,” 2005 AFOSR Program Review for Sensing, Imaging and Object Recognition , Raleigh, NC, May 26, 2005. cited by applicant
- Primary Examiner: Bhatti, Hashim S
- Attorney, Agent or Firm: Shattil, Steven J
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