Bilayer Beams and Relay Sharing Based OFDMA Cellular Architecture
Over the past decade, researchers have been putting a lot of energy on co-channel interference suppression in the forthcoming Fourth Generation (4G) wireless networks. Existing approaches to interference suppression are mainly based on signal processing, cooperative communication or coordination techniques. Though good performance has been attained already, a more complex receiver is needed, and there is still room for improvement through other ways. Considering spatial frequency reuse, which provides an easier way to cope with the co-channel interference, this paper proposed a Bilayer Beams and Relay Sharing based (BBRS) OFDMA cellular architecture and corresponding frequency planning scheme.