Interference Suppression in Multiple Access Communications Using M-Ary Phase Shift Keying Generated Via Spectral Encoding

A conceptual transform domain communication system (TDCS) is shown capable of operating successfully using M -Ary phase shift keying (MPSK) data modulation in a multiple access environment. Using spectral encoding, the conceptual TDCS provides an effective means for mitigating interference affects while achieving multiple access communications. The use of transform domain processing with MPSK data modulation (TD-MPSK) provides higher spectral efficiency relative to other modulation techniques (antipodal signaling and cyclic shift keying) considered previously for TDCS applications.