Cooperative Communications and Networking: Coordinated Base Station Access, Secure Relay-based Cooperation, Cooperative Cognitive Radio Networks

拟议的研究将探讨协作通信和网络：(I)协调基站集群以提供多小区协作，以扩展单个孤立小区的容量并缓解无线蜂窝网络中的小区间干扰；(Ii)通过协作中继和分集发送/接收来增强目标接收器的信号接收，同时通过引入技术来确保安全通信，以减少有意和无意的对手，例如恶意节点和窃听者；以及(Iii)在认知无线电网络中实现协作频谱接入，以在满足许可或主用户(PU)的要求的同时实现频谱和能量效率。源(发送方)将第三方作为合作伙伴(S)来转播其信号的基本原因是，从源到目的地的直接链路的质量可能非常差，例如，被直接路径中的障碍物阻塞或被无线信道中固有的损害所干扰。 长期目标是开发新的和深入的知识，以构建灵活和强大的跨域信息传输平台，用于在固定和移动环境中处理多媒体服务，以促进具有服务质量供应的大容量端到端信息的安全传输。作为实现长期目标的构建块，短期目标是(I)研究可以利用小区间干扰的多小区协作通信中的技术，使得协调集群中的每个小区具有与单个孤立小区相同的每小区容量，(Ii)提出有效的功率控制和资源分配策略，并开发用于实现功率分配方案的高效算法，(Iii)寻求频谱高效和能量高效的协作频谱接入的高效方法，以及(Iv)开发用于在无线网状网络上传递信息的端到端控制算法和安全传输方案。

The proposed research will investigate into cooperative communications and networking (i) to coordinate a cluster of base stations to provide multi-cell cooperation so as to expand the capacity of a single isolated cell and mitigate inter-cell interference in wireless cellular networks, (ii) to enhance signal reception at the destination receiver through cooperative relaying and diversity transmission/reception, while ensuring secure communication by introducing techniques to mitigate intentional and unintentional adversaries, e.g., malicious nodes and eavesdroppers, and (iii) to effect cooperative spectrum access in cognitive radio networks to achieve spectrum and energy efficiencies while satisfying the requirements of licensed or primary users (PUs). The fundamental reason for a source (sender) to engage a third party as partner(s) to relay its signal is because the quality of the direct link from source to destination may be very poor, e.g., either blocked by obstacles in the direct path or faded by impairments inherent in the wireless channel. The long term objective is to develop new and in-depth knowledge towards the construction of a flexible and robust cross-domain information transport platform for handling multimedia services in fixed and mobile environments to facilitate secure end-to-end information transfer in large volumes with QoS provisioning. As building blocks to fulfill the long-term objective, the short term objectives are (i) to investigate techniques in multi-cell cooperative communications that can exploit inter-cell interferences so that each cell in the coordinated cluster has the same per-cell capacity as a single isolated cell, (ii) to propose efficient power control and resource allocation strategies and develop efficient algorithms for implementation of power allocation schemes, (iii) to seek efficient methods for cooperative spectrum access that are spectrum efficient and energy efficient, and (iv) to develop end-to-end control algorithms and secure transmission schemes for information delivery across wireless mesh networks.