Interference Management in Wireless Relay Networks

自20世纪80年代初引入第一代蜂窝系统以来，今天的无线通信服务已经取得了长足的进步。高速多媒体应用、环境监测和远程医疗对无线接入的需求一直在稳步增长。新一代的无线系统和网络只有依靠更好的资源管理和改进的传输技术才能满足这一需求。人们已经认识到，未来的无线通信系统和网络将基于新兴的协作/中继通信技术。协作和中继通信的概念是网络中的节点(或用户)协作将数据从源传输到目的地。与传统的点对点通信相比，该技术具有许多潜在的优势，包括配置灵活性、更好的覆盖、更高的性能、更大的容量等。 在Sendonaris等人发表开创性论文后，在合作/接力通信方面开展了广泛的研究活动。(2003)和Laneman(2004)。现在可以理解，只有当将正确的方法应用于特定的应用场景时，才能实现协作/中继通信的潜在收益。要将协作/中继通信付诸实践，仍需要持续的研究努力。本研究提案将着眼于通过允许在公共传输介质上同时进行多个传输来提高无线中继网的可靠性和/或容量的实用方法和技术。需要解决的关键技术问题是在中继节点和目的节点的干扰管理。提出的研究包括分析和计算机模拟，以开发和评估新方法和技术的性能。拟议研究方案的成功应会加强加拿大在通过无线通信系统和网络提供可靠和有效的信息传输方面的竞争地位。

Today's wireless communication services have come a long way since the introduction of the first generation of cellular systems in the early 1980s. The demand for wireless access in high-speed multi-media applications, environmental monitoring and telemedicine has been increasing steadily. New generations of wireless systems and networks can only accommodate this demand by relying on better resource management and improved transmission technologies. It has been recognized that future wireless communication systems and networks will be based on the emerging technology of cooperative/relay communications. The concept of cooperative and relay communications is that nodes (or users) in a network cooperate to transmit data from a source to a destination. This technology has many potential advantages over conventional point-to-point communications, including configuration flexibility, better coverage, improved performance, higher capacity, etc. There have been extensive research activities in cooperative/relay communications after the publication of seminal papers by Sendonaris et al. (2003) and Laneman (2004). It is now understood that potential gains of cooperative/relay communications can only be realized when the right approach is applied to a specific application scenario. To bring cooperative/relay communications into practice, continued research efforts are still much needed. This research proposal shall look at practical methods and techniques for improving the reliability and/or capacity of wireless relay networks by allowing multiple transmissions to take place simultaneously over a common transmission medium. The key technical issue to be addressed is interference management, both at the relay and destination nodes. The proposed research includes both analysis and computer simulation to develop and evaluate performance of the new methods and techniques. The successes of the proposed research program should enhance Canada's competitive position in providing reliable and efficient transmission of information over wireless communication systems and networks.