A blind and partial interference alignment scheme based on pulse shaping for 3-user SISO interference channel

In this paper, we propose a transmit signal pulse shaping approach to improve the data rates for the 3-user single-input-single-output interference channel (SISO-IC). The proposed scheme makes use of partial interference alignment based on suitable pulse shape design and no channel state information (CSI) at the transmitters, i.e., the transmitters are blind. While a degrees of freedom (DoF) improvement over the conventional time-division-multiple-access (TDMA) scheme cannot be claimed, the proposed scheme still provides a 25% data rate improvement with quite reasonable BER. In this paper, we show the usefulness of the proposed scheme in practical situations where strict zero error rates are not required.