Space-time block coded spatial modulation scheme enhanced by employing an intersymbol phase and power allocation

Authors

AHMET FARUK COŞKUN

DOI

10.3906/elk-1606-144

Abstract

This paper provides a brief and insightful examination of the advantages achieved by employing combined phase offsetting and power allocation mechanisms in the space-time block coded (STBC) transmission of spatial modulation schemes with cyclic structure (CSM). In order to achieve increased coding gain distances (CGDs) between transmitted code words (CWs), the power allocation mechanism is cascaded to the constellation mapping process of a STBC-CSM scheme, and the optimal power and phase weights for the conveyed information symbols, together with the phases for each CW, are searched by a heuristic algorithm based on differential evolution that yields the best CGD available for the employed CWs. The outcomes of the optimization study, which is focused on maximizing the minimum CGD between all possible CW combinations for different numbers of antennas and modulation schemes, are then used to investigate and exhibit the average enhancements in the communications reliability.

Keywords

Space-time block codes, spatial modulation, phase and power allocation

First Page

3713

Last Page

3724

Recommended Citation

COŞKUN, AHMET FARUK (2017) "Space-time block coded spatial modulation scheme enhanced by employing an intersymbol phase and power allocation," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 25: No. 5, Article 18. https://doi.org/10.3906/elk-1606-144
Available at: https://journals.tubitak.gov.tr/elektrik/vol25/iss5/18