Phase Division Multiple Access (PDMA)

Phase Division Multiple Access (PDMA) is a coded Multi Phase Shift Keying modulation technique, where multiple users have access to the same carrier frequency through the phase constellation. In the proposed scheme, the input digital signal is mapped into a block of orthogonal codes. The encoded data, which is in orthogonal space, modulates the carrier frequency by means of MPSK modulator. At the receiver the data is recovered by means of code correlation. This modulation technique offers multiple error correction with bandwidth efficiency.