NON-CONTIGUOUS SPECTRAL-BAND MODULATOR AND METHOD FOR NON-CONTIGUOUS SPECTRAL-BAND MODULATION

摘要

Embodiments of a non-contiguous spectral-band modulator and method for non-contiguous spectral-band modulation are generally described herein. In some embodiments, an input symbol tuple may be mapped to a sequence of phase values. Each value of the sequence of phase values may represent an instantaneous frequency of a waveform for a signal with a power spectral density that is substantially constrained to the two or more subbands of a non-contiguous spectrum. The values of the sequence of phase values may be accumulated and a phase-sample sequence representing phase samples of a transmit waveform may be generated. An exponentiation may be performed on the phase-sample sequence to generate a constant modulus signal sequence. An output signal sequence is generated that is constrained to a region in the complex plane, such as an annulus, when the signal is in a subband. The output signal sequence may be shaped to constrain spectral energy during transitions between subbands.