Efficient Coding and Decoding Techniques for Hybrid Radio Frequency and Visible Light Communication Links

混合射频和可见光通信链路的高效编码和解码技术

• 批准号: RGPIN-2017-05043
• 负责人: Damen, MohamedOussama
• 金额: $ 1.75万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=648591
• 关键词: Efficient; Coding; Decoding; Techniques; Hybrid

The demand for high data rate, reliable wireless communications continues to grow rapidly. The number of connected devices is expected to explode in the near future as the use of of smartphones, the Internet of Things' devices such as health and fitness wearables will vastly increase (10s of billions for 5G). As the radio frequency (RF) spectrum is becoming very crowded, alternative and complementary technologies, such as visible light communications (VLC) have recently become very appealing. The advantages of using VLC are its inherent safety, the lack of interference, because VLC does not penetrate walls, and the huge free bandwidth. However, VLC has its drawbacks such as limited indoor coverage and limited mobility, and has to be used in a hybrid manner with RF links. Despite the recent interest in VLC and the availability of some commercial products such as LiFi, there remain many open problems to be addressed in order to fully exploit the huge available bandwidth with practical schemes. For example, the development of efficient coding and modulation schemes and their associated practical decoding algorithms. In the proposed program, we will consider efficient transceiver techniques for hybrid RF/VLC links with applications to 5G systems and the Internet of Things. For 5G systems, we will consider load balancing across WiFi, VLC, and cellular networks. After studying the degrees of freedom in such links, we will investigate the use of modified lattice codes that satisfy the modulated light intensity model in order to achieve all the degrees of freedom available. At the receiver side, we will also investigate the potential modification and enhancement of lattice decoding techniques for the non-coherent intensity detection. The studied schemes are expected to offer better alternatives to existing ones such as on-off keying or pulse position modulations when used in realistic indoor environments. We will also consider short code design for short-range communication that can have some interesting applications such as the data transfer between health and fitness wearable sensors, and smartphones and smart homes hubs. The long term objectives of this program are to make fundamental contributions to the design and test of practical communications protocols that can work in heterogenous networks, which can have a wide range of emerging applications including 5G systems, the Internet of Things and eHealth. The intellectual property resulting from this program, as well as the large number of highly qualified personnel who will be trained in 5G systems and heterogenous communications protocols, will greatly benefit these rapidly growing sectors in Canada. This is especially true for 5G systems: the 5G infrastructure rollout is expected to coincide with the time at which students will be graduating from this program, making them highly employable, and providing an advantage to Canada's workforce.

对高数据速率的需求，可靠的无线通信继续迅速增长。随着智能手机的使用，诸如健康和健身诸如健康和健身之类的物联网设备的使用将在不久的将来爆炸的连接设备的数量将大大增加（5G十亿美元）。随着射频（RF）频谱变得非常拥挤，替代和互补技术，例如可见光通信（VLC），最近变得非常吸引人。使用VLC的优点是其固有的安全性，缺乏干扰，因为VLC没有穿透墙壁和巨大的自由带宽。但是，VLC的缺点，例如有限的室内覆盖范围和有限的移动性，并且必须与RF链接以混合方式使用。尽管最近对VLC感兴趣以及一些商业产品（例如LIFI）的可用性，但仍有许多开放问题需要解决，以充分利用实用方案的巨大可用带宽。例如，开发有效的编码和调制方案及其相关的实际解码算法。在拟议的计划中，我们将考虑与5G系统和物联网的应用程序的混合RF/VLC链接的有效收发器技术。对于5G系统，我们将考虑跨WiFi，VLC和蜂窝网络的负载平衡。在研究了此类链接中的自由度之后，我们将调查满足调制光强度模型的修改晶格代码的使用，以实现所有可用的自由度。在接收器侧，我们还将研究非连锁强度检测的晶格解码技术的潜在修饰和增强。在现实的室内环境中使用时，所研究的方案有望提供更好的替代方案，例如现有计划，例如On-Off Keying或Pulse Position调制。我们还将考虑短期通信的简短代码设计，这些代码设计可能具有一些有趣的应用程序，例如健康和健身可穿戴传感器之间的数据传输，智能手机和智能家居集线器。该计划的长期目标是为可以在异源网络中起作用的实用通信协议的设计和测试做出基本贡献，这些协议可以在异源网络中起作用，这些网络可以具有广泛的新兴应用程序，包括5G系统，物联网和EHEADH。该计划产生的知识产权以及将在5G系统和异质通信方案中接受培训的大量高素质人员，将极大地使这些在加拿大这些快速发展的部门受益。对于5G系统尤其如此：预计5G基础架构的推出将与学生从该计划毕业，使其非常有用的时间相吻合，并为加拿大的劳动力提供优势。