Patent ID: 7362820

Claim:
A method comprising: determining whether a programmable modulator is to operate in a Gaussian Minimum Shift Keyed (GMSK) mode or an 8 Phase Shift Keyed (8PSK) mode; operating the programmable modulator in the GMSK mode in response to determining that the programmable modulator is to operate in the GMSK mode wherein operating the programmable modulator in the GMSK mode further comprises: summing an approximate GMSK output and a GMSK correction term; operating the programmable modulator in the 8PSK mode in response to determining that the programmable modulator is to operate in the 8PSK mode wherein operating the programmable modulator in the 8PSK mode further comprises: detecting a power amplifier output from a power amplifier responsive to the programmable modulator; determining a filter parameter that linearizes the power amplifier output using signals corresponding to the power amplifier output and to the modulator output; determining filter coefficients corresponding to the filter parameter; and using the filter coefficients in a filter in the programmable modulator.