INTERFERENCE MITIGATION AND OPTIMAL FAIR RESOURCE ALLOCATION USING ANGULAR DIVERSITY TECHNIQUES IN VLC SYSTEMS

Abstract

The high increase of data demands requires searching for a new techniques of data transmission. Visible Light Communication (VLC) is one of the solutions that can be used in the nearest future because of its great advantages. However; it suffers from some challenges. One of these challenges is Limited LED bandwidth. This can be solved either by making frequency reuse to be one or fair resource allocation among distributed users. In this thesis, these two points have been discussed and simulated using diversity techniques i.e.; Angular Diversity Receiver (ADR), and Angular Diversity Transmitter (ADT). The first part is making frequency reuse and solve Co-channel interference (CCI) problem which acceptable Bit-error rate at different scenarios. The second part is on making resource allocation optimization using two search algorithms (exhaustive and heuristic search algorithm) that maximize the minimum Signal to Interference Noise Ratio(SINR). Both algorithms achieve superior performance. However heuristic algorithm achieves very low complexity comparing others.