  This paper proposes a novel transmission strategy, referred to as layered
BPSK, which allows two independent symbol streams to be layered at the
transmitter on a non-orthogonal basis and isolated from each other at the
receiver without inter-stream interference, aiming to achieve high data rates.
To evaluate the performance of the proposed scheme, its data rate is formulated
over additive white Gaussian noise (AWGN) channels. Based on the theoretical
analysis, numerical results are provided for the performance comparisons
between the proposed scheme and conventional transmission schemes, which
substantiate the validity of the proposed scheme.
