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US 8,976,851 B2Granted
Modulation and equalization in an orthonormal time-frequency shifting communications system
AssigneeCohere Technologies, Inc.
InventorsRonny Hadani, Salim Shlomo Rakib
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Abstract
A method which includes receiving a first modulated signal from a first user device, the first modulated signal being generated based upon a time-frequency transformation of first user data. The method further includes receiving a second modulated signal from a second user device, the second modulated signal being generated based upon a time-frequency transformation of second user data. The first modulated signal and the second modulated signal are then processed.
Claims6
A method, comprising:
- wirelessly receiving a first modulated signal from a first user device, the first modulated signal being generated based upon a time-frequency transformation of first user data wherein the first user data is associated with a first transmission interval of an orthonormal time frequency shifting (OTFS) transmission matrix having dimensions of time and frequency;
- wirelessly receiving a second modulated signal from a second user device, the second modulated signal being generated based upon a time-frequency transformation of second user data wherein the second user data is associated with a different transmission interval of the OTFS transmission matrix;
- and
- processing the first modulated signal and the second modulated signal.
1 more element
A method, comprising:
- wirelessly receiving a first modulated signal from a first user device, the first modulated signal being generated based upon a time-frequency transformation of first user data wherein the first user data is associated with a first frequency band of an orthonormal time frequency shifting (OTFS) transmission matrix having dimensions of time and frequency;
- wirelessly receiving a second modulated signal from a second user device, the second modulated signal being generated based upon a time-frequency transformation of second user data wherein the second user data is associated with a different frequency band of the OTFS transmission matrix;
- and
- processing the first modulated signal and the second modulated signal.
1 more element
A method, comprising:
- wirelessly receiving a first modulated signal from a first user device, the first modulated signal being generated based upon a time-frequency transformation of first user data wherein the first user data is associated with a first area of an orthonormal time frequency shifting (OTFS) transmission matrix having dimensions of time and frequency;
- wirelessly receiving a second modulated signal from a second user device, the second modulated signal being generated based upon a time-frequency transformation of second user data wherein the second user data is associated with a second area of the OTFS transmission matrix;
- and
- processing the first modulated signal and the second modulated signal.
1 more element
A wireless device comprising:
- an antenna;
- a receiver coupled to the antenna, the receiver being configured to:
- receive a first modulated wireless signal from a first user device wherein the first modulated wireless signal is generated based upon a time-frequency transformation of first user data wherein the first user data is associated with a first transmission interval of an orthonormal time frequency shifting (OTFS) transmission matrix having dimensions of time and frequency, and
- receive a second modulated wireless signal from a second user device wherein the second modulated wireless signal is generated based upon a time-frequency transformation of second user data wherein the second user data is associated with a different transmission interval of the OTFS transmission matrix;
- and
- a processor in communication with the receiver, the processor being configured to process the first modulated signal and the second modulated signal.
3 more elements
A wireless device comprising:
- an antenna;
- a receiver coupled to the antenna, the receiver being configured to:
- receive a first modulated wireless signal from a first user device wherein the first modulated wireless signal is generated based upon a time-frequency transformation of first user data wherein the first user data is associated with a first frequency band of an orthonormal time frequency shifting (OTFS) transmission matrix having dimensions of time and frequency, and
- receive a second modulated wireless signal from a second user device wherein the second modulated wireless signal is generated based upon a time-frequency transformation of second user data wherein the second user data is associated with a different frequency band of the OTFS transmission matrix;
- and
- a processor in communication with the receiver, the processor being configured to process the first modulated signal and the second modulated signal.
3 more elements
A wireless device comprising:
- an antenna;
- a receiver coupled to the antenna, the receiver being configured to:
- receive a first modulated wireless signal from a first user device wherein the first modulated wireless signal is generated based upon a time-frequency transformation of first user data wherein the first user data is associated with a first area of an orthonormal time frequency shifting (OTFS) transmission matrix having dimensions of time and frequency, and
- receive a second modulated wireless signal from a second user device wherein the second modulated wireless signal is generated based upon a time-frequency transformation of second user data wherein the second user data is associated with a second area of the OTFS transmission matrix;
- and
- a processor in communication with the receiver, the processor being configured to process the first modulated signal and the second modulated signal.
3 more elements
Dependencies are inferred from the claim text.