Multi-antenna cooperation and relaying techniques for next generation infrastructure-based cellular networks

未来的无线系统将需要为各种应用提供类似于今天固定有线网络中提供的高质量互联网接入，并且不受用户位置的限制。先进的多天线技术很可能是实现下一代无线网络目标峰值频谱效率的关键。但是，比峰值数据速率更重要的是未来系统在大部分小区覆盖区域可靠地实现大数据速率的能力。此外，多天线技术只能在信噪比(SINR)高于小区大区域通常可用的干扰比(SINR)的情况下提供高数据速率。因此，有必要找到改善信干噪比的工具，而多跳中继技术已被确定为实现这一目标的关键方法。在基于中继的部署中，中间中继站用于在基站和远程移动用户之间建立链路，与部署新基站相比，它代表了一种经济高效的解决方案，以扩大覆盖范围并提高平均频谱效率。拟议的研究计划的目标是确定先进的多天线中继传输和协作技术如何有利于基于下一代基础设施的蜂窝网络。更具体地说，研究将集中在新颖的多天线和多用户MIMO中继技术，基于多天线中继的蜂窝网络的高效资源分配算法，以及基于基站和中继协作的新的干扰管理技术。预计该研究项目将产生新的结果，如蜂窝网络的新的中继和协作技术，这些技术的基本限制和权衡分析，有效利用这些技术的实用算法，以及基于中继的网络的部署工具。因此，研究结果应该引起蜂窝服务提供商、设备制造商、标准化组织和研究界的极大兴趣。因此，它应该有助于在未来基于基础设施的高速蜂窝网络中成功地整合先进的多天线中继技术。

Future wireless systems will need to offer, for a variety of applications and without limitations to the user location, a high quality access to the Internet similar to what is available today in fixed wired networks. Advanced multi-antenna technologies will most likely be crucial in achieving the target peak spectral efficiency of next generation wireless networks. But, more important than the peak data rate will be the ability of future systems to reliably achieve large data rates in most of the cell coverage area. Furthermore, multi-antenna techniques can only deliver high data rates for signal to noise plus interference ratio (SINR) higher than what is typically available in large areas of the cell. It is therefore necessary to find tools to improve the SINR and multi-hop relaying techniques have been identified as a key approach to achieve this goal. In a relay-based deployment, intermediate relay stations are used to establish a link between the base station and distant mobile users and represent a cost effective solution, versus deploying new base stations, to extend coverage and improve the average spectral efficiency. The goal of the proposed research program is to determine how advanced multi-antenna relaying transmission and cooperation techniques can be beneficial to next generation infrastructure-based cellular networks. More specifically, the research will focus on novel multi-antenna and multi-user MIMO relaying techniques, efficient resource allocation algorithms for multi-antenna relay-based cellular networks, and new interference management techniques based on cooperation between base stations and relays. It is expected that the research project will yield novel results, such as new relaying and cooperation techniques for cellular networks, fundamental limits and tradeoffs analysis for these techniques, practical algorithms to efficiently exploit them, and deployment tools for relay-based networks. The research outcomes should thus be of significant interest to cellular service providers, equipment manufacturers, standardization organizations and the research community. It should therefore contribute to the successful integration of advanced multi-antenna relaying techniques in future high-speed infrastructure-based cellular networks.