Performance study of optical wireless communications withsynchronization error in atmospheric turbulence

One key challenge of subcarrier phase-shift keying (PSK) system using coherent modulation is the synchronization problem at the receiver because the residual synchronization error will introduce performance degradation to the system. In the proposed research project, I will investigate the effect of synchronization error on performance of SIM OWC system in atmospheric turbulence. The performance degradation introduced by synchronization error (with respect to performance of subcarrier PSK system with perfect synchronization) will be quantified analytically. This analytical tool can predict the performance loss introduced to subcarrier PSK system by imperfect synchronization once the key design parameters are given. I will also investigate the performance advantage of imperfect synchronized coherent modulations over noncoherent or differentially coherent modulations in order to examine the necessity of doing imperfect synchronization at the receiver in a practical system. The research results from this project will be used to help engineers design practical OWC links.

Faculty Supervisor:

Julian Cheng

Student:

Partner:

University of Science and Technology of China

Discipline:

Engineering

Sector:

Education

University:

University of British Columbia - Okanagan

Program: