Distributed space-time block coding for 3 and 4 relay nodes: Imperfect synchronisation and a solution

Zheng, F.C., Burr, A.G. and Olafsson, S. (2007) Distributed space-time block coding for 3 and 4 relay nodes: Imperfect synchronisation and a solution. In: 18th IEEE International Symposium on Personal, Indoor and Mobile Radio Communication, Athens, Greece. doi: 10.1109/PIMRC.2007.4394369

Abstract/Summary

Most research on distributed space time block coding (STBC) has so far focused on the case of 2 relay nodes and assumed that the relay nodes are perfectly synchronised at the symbol level. By applying STBC to 3-or 4-relay node systems, this paper shows that imperfect synchronisation causes significant performance degradation to the conventional detector. To this end, we propose a new STBC detection solution based on the principle of parallel interference cancellation (PIC). The PIC detector is moderate in computational complexity but is very effective in suppressing the impact of imperfect synchronisation.