Systems/methods of spectrally efficient communications
First Claim
1. A communications method comprising:
- receiving by a first wireless receiver a first electromagnetic signal that comprises a combination of a desired component that is related to a desired signal and an interference component that is related to an interference signal, wherein each one of the desired signal and the interference signal are transmitted using a common set of frequencies by respective first and second physically distinct sources;
frequency shifting said first electromagnetic signal that is received by said first wireless receiver from frequencies at which the first electromagnetic signal is received at the first wireless receiver to frequencies that are mutually exclusive to said frequencies at which the first electromagnetic signal is received at the first wireless receiver;
providing said first electromagnetic signal that is received by said first wireless receiver and is frequency shifted to a first wireless transmitter;
transmitting by said first wireless transmitter said first electromagnetic signal that is frequency shifted;
receiving by a second wireless receiver a second electromagnetic signal that comprises a combination of a desired component that is related to said desired signal and an interference component that is related to said interference signal;
frequency shifting said second electromagnetic signal that is received by said second wireless receiver from frequencies at which the second electromagnetic signal is received at the second wireless receiver to frequencies that are mutually exclusive to said frequencies at which the second electromagnetic signal is received at the second wireless receiver;
processing the second electromagnetic signal that is received by the second wireless receiver and is frequency shifted;
providing said second electromagnetic signal that is received by said second wireless receiver following said frequency shifting and processing thereof to a second wireless transmitter;
transmitting by the second wireless transmitter the second electromagnetic signal that has been frequency shifted and processed; and
concurrently wirelessly receiving at a receiving element the first electromagnetic signal that has been frequency shifted and transmitted by said first wireless transmitter and the second electromagnetic signal that has been frequency shifted and processed and transmitted by said second wireless transmitter so that respective components thereof that are related to the interference signal at least partially cancel one another upon reception at the receiving element at the frequencies of reception by the receiving element;
wherein said processing the second electromagnetic signal that is received by the second wireless receiver comprises altering a phase thereof.
2 Assignments
0 Petitions
Accused Products
Abstract
First and second receivers are used to receive respective first and second signals, to process said first and second signals and provide respective first and second measures thereof to respective first and second transmitters. The first and second transmitters are configured to launch the first and second measures, respectively, each comprising a desired component that has originated at a desired source, and an interference component that has originated at an interfering source. The first and/or second transmitters are configured to process and launch the respective first and second measures, properly conditioned, so that upon interception thereof by a receiving element the interference components thereof add destructively and substantially cancel (or at least partially cancel) each other, whereas the desired components avoid substantial cancellation owing to a phase relationship therebetween that differs relative to a phase relationship between the interference components.
-
Citations
11 Claims
-
1. A communications method comprising:
-
receiving by a first wireless receiver a first electromagnetic signal that comprises a combination of a desired component that is related to a desired signal and an interference component that is related to an interference signal, wherein each one of the desired signal and the interference signal are transmitted using a common set of frequencies by respective first and second physically distinct sources; frequency shifting said first electromagnetic signal that is received by said first wireless receiver from frequencies at which the first electromagnetic signal is received at the first wireless receiver to frequencies that are mutually exclusive to said frequencies at which the first electromagnetic signal is received at the first wireless receiver; providing said first electromagnetic signal that is received by said first wireless receiver and is frequency shifted to a first wireless transmitter; transmitting by said first wireless transmitter said first electromagnetic signal that is frequency shifted; receiving by a second wireless receiver a second electromagnetic signal that comprises a combination of a desired component that is related to said desired signal and an interference component that is related to said interference signal; frequency shifting said second electromagnetic signal that is received by said second wireless receiver from frequencies at which the second electromagnetic signal is received at the second wireless receiver to frequencies that are mutually exclusive to said frequencies at which the second electromagnetic signal is received at the second wireless receiver; processing the second electromagnetic signal that is received by the second wireless receiver and is frequency shifted; providing said second electromagnetic signal that is received by said second wireless receiver following said frequency shifting and processing thereof to a second wireless transmitter; transmitting by the second wireless transmitter the second electromagnetic signal that has been frequency shifted and processed; and concurrently wirelessly receiving at a receiving element the first electromagnetic signal that has been frequency shifted and transmitted by said first wireless transmitter and the second electromagnetic signal that has been frequency shifted and processed and transmitted by said second wireless transmitter so that respective components thereof that are related to the interference signal at least partially cancel one another upon reception at the receiving element at the frequencies of reception by the receiving element; wherein said processing the second electromagnetic signal that is received by the second wireless receiver comprises altering a phase thereof. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A communications system configured to perform operations comprising:
-
receiving by a first wireless receiver a first electromagnetic signal that comprises a combination of a desired component that is related to a desired signal and an interference component that is related to an interference signal;
wherein each one of the desired signal and the interference signal are transmitted using a common set of frequencies by respective first and second physically distinct sources;frequency shifting said first electromagnetic signal that is received by said first wireless receiver from frequencies at which the first electromagnetic signal is received at the first wireless receiver to frequencies that are mutually exclusive to said frequencies at which the first electromagnetic signal is received at the first wireless receiver; providing said first electromagnetic signal that is received by said first wireless receiver and is frequency shifted to a first wireless transmitter; transmitting by said first wireless transmitter said first electromagnetic signal that is frequency shifted; receiving by a second wireless receiver a second electromagnetic signal that comprises a combination of a desired component that is related to said desired signal and an interference component that is related to said interference signal; frequency shifting said second electromagnetic signal that is received by said second wireless receiver from frequencies at which the second electromagnetic signal is received at the second wireless receiver to frequencies that are mutually exclusive to said frequencies at which the second electromagnetic signal is received at the second wireless receiver; processing the second electromagnetic signal that is received by the second wireless receiver and is frequency shifted; providing said second electromagnetic signal that is received by said second wireless receiver and is frequency shifted and processed to a second wireless transmitter; transmitting by the second wireless transmitter the second electromagnetic signal that has been frequency shifted and processed; and concurrently wirelessly receiving at a receiving element the first electromagnetic signal that has been frequency shifted and transmitted by said first wireless transmitter and the second electromagnetic signal that has been frequency shifted and processed and transmitted by said second wireless transmitter so that respective components thereof that are related to the interference signal at least partially cancel one another upon reception at the receiving element at the frequencies of reception by the receiving element; wherein said processing the second electromagnetic signal that is received by the second wireless receiver comprises altering a phase thereof. - View Dependent Claims (8, 9, 10, 11)
-
Specification