Multi-Dimensional Space–Time Shift Keying for Wireless Communications

Multi-Dimensional Space–Time Shift Keying for Wireless Communications

Blog Article

In this paper, we introduce the concept of multi-dimensional (MD) space-time shift keying (STSK) for improving conventional STSK schemes, while still maintaining the general STSK structure for backward compatibility.Firstly, we design two transmission modes for three-dimensional (3-D) STSK schemes, referred to as R2 3-D STSK and R3 Nightlight 3-D STSK, with the incorporation of 3-D constellations.In addition, we devise a joint optimization mechanism utilizing the modified simplified conjugate gradient (SCG) algorithm to enhance the achievable system performance of R3 3-D STSK, through a harmonized design of the constellation and the dispersion matrix set.Furthermore, we derive the optimal combinations of the 3-D constellation coordinates for R2 3-D STSK by maximizing the minimal determinant of the difference matrices.

Then, we extend 3-D STSK to the MD STSK family, offering a flexible and efficient performance enhancement mechanism for STSK systems.Extensive simulation results are provided to Blood Pressure - Cuff and Stethoscope Sets show the tradeoffs among link performance, diversity order and signal dimensionality of the proposed MD STSK scheme, illustrating a good way to upgrade conventional STSK systems.