Linear interference cancellation receiver for edge systems
AssigneeTexas Instruments Incorporated
InventorsEko Onggosanusi, Timothy Schmidl, Anand Dabak
Life of this patent
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Abstract
A method for providing interference suppression in a communication device includes receiving a signal, determining if the received signal comprises a Gaussian Minimum Shift Keying (GMSK) or an 8 phase shift keying (8PSK) signal. Over sampling and inphase and quadrature phase separation with real-valued signal processing on the received signal is performed whenever the received signal is determined to be a GMSK signal. Oversampling with complex-valued signal processing on the received signal is performed whenever the received signal is determined to be an 8PSK signal. A receiver is also disclosed that provides for interference suppression.
Claims24
A method for providing interference suppression in a communication device, comprising:
- receiving a signal with P receive antenna(s);
- determining if the received signal comprises a Gaussian Minimum Shift Keying (GMSK) or a 8 phase shift keying (8PSK) signal;
- performing Q-times oversampling where Q is a positive integer and inphase and quadrature phase separation with real-valued signal processing on the received signal whenever the received signal is determined to be a GMSK signal;
- and
- performing Q-times oversampling where Q is a positive integer with complex-valued signal processing on the received signal whenever the received signal is determined to be a 8PSK signal.
A receiver that performs interference cancellation, comprising:
- signal modulation detector for determining if a received signal is a Gaussian Minimum Shift Keying (GMSK) or a 8 phase shift keying (8PSK) signal;
- an Q-times oversampler for performing Q-times oversampling on the received signal in order to provide a Q-times oversampled signal where Q is a positive integer;
- and
- switch circuit for causing GMSK signal to be inphase and quadrature phase separated and real-valued processed if the signal is determined to be a GMSK signal by the signal modulation detector, and performing complex-valued processing on the received signal if the signal is determined to be a 8PSK signal.
Dependencies are inferred from the claim text.