Bandwidth Efficient Relay Transmission Strategy for MIMO-OFDMA Multicellular Networks: Relay Transmission in OFDMA Networks

Abstract

A bandwidth efficient relay transmission strategy is proposed and analyzed for MIMO – OFDMA cellular networks. Unlike other relay approaches studied in the literature, requested content plays a key role in the relay node selection procedure. The overall systems' architecture, including relaying selection procedures, data forwarding and reception is described, while privacy and security issues are analyzed as well. In the final section of the manuscript, performance metrics are provided demonstrating the superiority of the described approach compared to the non-content aware case.