Zero Forcing Transceiver Design for uplink of MultiUser CGFDMA Systems

In generalized frequency division multiplexing (GFDM) technique, the data symbols are transmitted on different time and frequency by using non-orthogonal pulse shapes. This causes two dimensional self-interference (SI) among the transmitted symbols. Recently, a modified version of GFDM, coded GFDM (CGFDM), has been introduced avoiding the noise enhancement during SI cancellation by providing a unitary SI matrix. In this paper, we generalize the CGFDM idea to be used in the uplink of a multiuser transmission scenario, and develop a zero-forcing (ZF) receiver to detect data symbols of multiple users. Simulation results show that the proposed ZF based transceiver outperforms the conventional ZF based generalized frequency division multiple access transceiver when the number of subsymbols is high and the prototype filter is less localized, with just a slight increase in computation complexity.