Separation of cochannel FM signals
AssigneeL-3 Communications Integrated Systems L.P.
InventorSteven Stanners
Life of this patent
Estimating the term…
Abstract
Multiple cochannel FM signals received, for example, in an overloaded signal environment may be separated using parallel interference cancellation techniques.
Claims33
A method for processing FM signals, comprising:
- receiving RF data, said received RF data comprising cochannel FM signals received in the same frequency range and at the same time;
- using parallel interference cancellation to provide an estimate for each of said cochannel FM signals;
- and
- separating each of said cochannel FM signals from other cochannel FM signals of said received RF data based on said estimate for each of said cochannel FM signals.
A method for transmitting FM signals, comprising providing RF data comprising cochannel FM signals for transmission in the same frequency range and at the same time for reception by a receiver, said receiver configured to separate each of said cochannel FM signals from other cochannel FM signals of said RF data based on an estimate for each of said cochannel FM signals provided by parallel interference cancellation.
A system for communication, said system comprising:
- transmit circuitry configured to provide RF data comprising cochannel FM signals for transmission in the same frequency range and at the same time;
- and
- receive and separation circuitry configured to receive and separate each of said cochannel FM signals from other cochannel FM signals of said RF data by using parallel interference cancellation to provide an estimate for each of said cochannel FM signals, and separating each of said cochannel FM signals from other cochannel FM signals of said received RF data based on said estimate for each of said cochannel FM signals.
An FM signal processing system, comprising:
- receive and separation circuitry coupled to receive RF data, said received RF data comprising cochannel FM signals received in the same frequency range and at the same time;
- and
- wherein said receive and separation circuitry is configured to use parallel interference cancellation to provide an estimate for each of said cochannel FM signals, and to separate each of said cochannel FM signals from other cochannel FM signals of said received RF data based on said estimate for each of said cochannel FM signals.
Signal separation circuitry configured to be coupled to a source of received RF data that includes cochannel FM signals, said signal separation circuitry comprising a first stage of parallel interference cancellation (PIC) circuitry.
Dependencies are inferred from the claim text.