Next Generation Free-Space Optical Communication Systems

自由空间光通信又称无线光通信，是未来异构无线网络的重要技术。当前基于射频的无线网络承载着日益增长的数据业务，而自由空间光通信作为频谱短缺和拥塞问题的可行解决方案而出现。自由空间光通信是一种具有成本效益、安全、无干扰和免许可证的技术，能够在不使用光纤电缆的情况下以每秒千兆比特的速度传输高速数据。虽然已经部署了一些当前一代的商业自由空间光通信系统，但是它们不能以功率有效的方式克服由相干性引起的衰落引起的损害。无线光通信的通信理论远未成熟。挑战仍然是开发能够进行可靠的高速数据通信的低成本和低功率自由空间光通信系统。 根据我们提出的研究计划，我们将确定下一代自由空间光通信系统的核心技术。我们将在现实的信道和系统损伤的存在下对这些系统进行数学分析和建模。我们将发明新的算法，以促进我们新的自由空间光通信系统的实现。期望为现代无线光通信理论的发展做出贡献。我们开发的新的自由空间光副载波调制的同步算法将解决突出的挑战，并成为下一代自由空间光通信系统的广泛采用的重大技术突破。我们提出的研究计划可能会产生新的发明，导致可以申请专利的技术。我们新的自由空间光通信技术将使加拿大在无线通信领域保持竞争力。

Free-space optical communication, also known as wireless optical communication, is an important technology in future heterogeneous wireless networks. The current radio frequency based wireless networks are carrying increasing data traffic, and free-space optical communication emerges as a viable solution to the spectrum shortage and congestion problems. Free-space optical communication is a cost-effective, secure, interference-free, and license-free technology capable of delivering high speed data at gigabits per second without use of fiber optic cable. While some current generation commercial free-space optical communication systems have been deployed, they are incapable of overcoming the impairments caused by turbulence-induced fading in a power efficient manner. The communication theory of wireless optical communication is far from mature. The challenge remains to develop low-cost and low-power free-space optical communication systems capable of reliable high-speed data communication. Under our proposed research program, we will identify core technology for the next generation free-space optical communication systems. We will perform mathematical analysis and modeling of these systems in the presence of realistic channel and system impairments. We will invent new algorithms that will facilitate the implementation of our new free-space optical communication systems. We anticipate to make contributions to the advancement of modern wireless optical communication theory. Our development of novel synchronization algorithms for free-space optical subcarrier modulation will solve the outstanding challenge and become a major technology breakthrough for wide adoption of next generation free-space optical communication systems. Our proposed research program will likely generate new inventions leading to technology that can be patented. Our new free-space optical communication technology will keep Canada stay competitive in wireless communication sector.