Power and bandwidth efficient MIMO communication techniques

自从四分之一个世纪前蜂窝电话问世以来，无线/移动通信经历了指数级的增长。不仅手机成为许多人的必需品，其他无线技术，如无线局域网和蓝牙，也逐渐融入我们的日常生活。无线技术的日益普及，以及多媒体应用的进步，给该行业带来了许多技术挑战：鉴于发射功率水平、频谱和设备尺寸的物理限制，我们如何继续向要求越来越高的消费者提供负担得起的设备和服务？这里的一个关键词是MIMO，它指的是一种无线通信技术，通过多个发射和一个或多个接收天线将信息传输到用户的S设备。这种系统架构与只使用一个发射天线的传统做法不同。本质上，MIMO引入了额外的系统资源，即空间冗余，而不需要额外的成本！与传统系统相比，基于MIMO技术的无线系统有望提供显著的容量提升。这项研究的主要目标是设计编码和信号处理方法，以简化MIMO系统的实现，同时使其更可靠，更具功率/带宽效率。第二个目标是利用研究计划作为一个平台，培训高素质的人才，他们最终将帮助加拿大行业在这个价值数十亿美元的全球无线技术市场上竞争。

Wireless/mobile communications has experienced exponential growh since the introduction of the cellular phone a quarter of a century ago. Not only does cellular phone become a necessity for many people, other wireless technologies such as wireless local area networks and Bluetooth are gradually integrated into our daily life. This increasing popularity of wireless technologies, together with advances in multi-media applications, pose a number of technical challenges for the industry: given the physical limitations on the transmit power level, spectrum, and device size, how can we continue to provide affordable devices and services to the ever-demanding consumers? A key word here is MIMO, which refers to a wireless communication technology whereby information is beamed to the user 's device via multiple transmit and one or more receive antennas. This system architecture is a departure from the traditional practice of employing only one transmit antenna. Essentially, MIMO introduces an added system resource, namely spatial redundancy, at no extra cost! Wireless systems based on MIMO technologies are expected to offer a dramatic increase in capacity when compared to conventional systems. The primary goal of this research is to devise coding and signal processing means that simplify MIMO system implementation while at the same time make them more reliable and more power/bandwidth efficient. A secondary goal is to use the research program as a platform to train highly qualified personnel who eventually will assist the Canadian industry to compete in this multi-billion dollar worldwide market of wireless technologies.