Publikationsdatum:
2018-03-13
Beschreibung:
In this letter, we consider a multi-user multiple-input single-output visible light communication system. A power-efficient linear precoding for zero-forcing (ZF) detection is developed with channel uncertainty, i.e., noisy channel state information (CSI) and outdated CSI. With the constraint of a dynamic current range of light-emitting diodes, the proposed method is capable of minimizing total optical power and guaranteeing user performance. Simulation results demonstrate that the proposed precoding can achieve a lower power consumption than the pseudo-inverse ZF precoding with the same user performance.
Print ISSN:
1041-1135
Digitale ISSN:
1941-0174
Thema:
Elektrotechnik, Elektronik, Nachrichtentechnik
