Design and Analysis of Communication Techniques for Future Wireless Networks

无线设备（智能手机、平板电脑、机器、传感器等）和移动数据流量的爆炸式增长推动了对无线接入的需求，远远超出了当前一代无线网络的能力。未来的无线网络（5G及以上）预计将大幅提高数据速率、网络容量和能源效率，并降低延迟。为了满足这些期望，将需要进行重大的技术革新。******今天，没有一种技术可以代表5G及以后的网络。相反，有几种有前途的候选技术，包括带内全双工（FD）无线电、大规模MIMO、毫米波通信（mmWave）、新型多载波调制和中继。普遍的共识是，在未来的无线网络中需要集成这些候选技术。在这些新兴技术中，FD通信非常有前途，因为它提供了相对于传统半双工系统的两倍频谱效率的潜力，允许节点在同一频段上同时进行传输和接收。FD通信的概念并不新鲜，但长期以来被认为是不切实际的，因为FD设备的发射器对其自己的接收器产生非常高的自干扰。对FD的重新关注很大程度上是由于网络提供商缩小了单元大小以增加空间重用。这种向更短距离链路的架构变化允许降低传输功率，从而减少自干扰问题，使实际FD通信更接近现实。******该研究计划的长期目标是利用信息理论、通信、信号处理和优化方面的工具和见解来推进理解和创新，从而在无线网络上提供更有效的通信服务。该研究计划将通过追求几个短期目标来推进这些长期目标，这些短期目标涉及设计和分析具有新多载波波形的FD通信，即广义频分复用（GFDM）和圆形滤波器组多载波（C-FBMC）。这些多载波波形正在被认真考虑作为5G网络的空中接口，并取代在4G网络中广泛使用的正交频分复用（OFDM）波形。这是因为GFDM和C-FBMC可以解决OFDM要求严格同步和产生高带外发射的主要限制。拟议的研究项目的成果，无论是研究创新还是HQP培训，都将继续帮助加拿大在快速发展的无线通信行业中保持国际竞争力和影响力。

The explosive growths of wireless devices (smart-phones, tablets, machines, sensors, etc.) and mobile data traffic are driving demand for wireless access far beyond the capabilities of the current generation of wireless networks. Future wireless networks (5G and beyond) are expected to dramatically increase data rate, network capacity and energy efficiency and lower the latency. To meet these expectations, significant technological innovations will be required.******Today, there is no single technology representing 5G networks and beyond. Instead, there are several promising candidate technologies, including in-band full-duplex (FD) radio, massive MIMO, millimeter-wave communications (mmWave), new multicarrier modulation, and relaying. The general consensus is that the integration of these candidate technologies will be required in future wireless networks. Among these emerging technologies, FD communication is very promising since it offers the potential to double the spectral efficiency relative to the conventional half-duplex systems by allowing a node to conduct simultaneous transmission and reception over the same frequency band. The concept of FD communication is not new but was long considered impractical given the very high level of self-interference that an FD device's transmitter causes to its own receiver. The renewed interests in FD are largely due to the fact that network providers have shrunk cell sizes to enable increased spatial reuse. Such architectural change towards shorter-range links permits reduced transmission power, thereby lessening the self-interference problem and making practical FD communications closer to reality.******The long-term objectives of the proposed research program are to use tools and insights from information theory, communications, signal processing and optimization to advance understanding and innovations in providing more efficient communication services over wireless networks. The research program will be advanced to such long-term objectives through the pursuit of several short-term objectives concerning the design and analysis of FD communications with new multicarrier waveforms, namely generalized frequency-division multiplexing (GFDM) and circular filter-bank multicarrier (C-FBMC). These multicarrier waveforms are being seriously considered as the air interface in 5G networks and to replace the orthogonal frequency-division multiplexing (OFDM) waveform widely used in 4G networks. This is because GFDM and C-FBMC can resolve the major limitations of OFDM in requiring strict synchronization and generating high out-of-band emission. The outcomes of the proposed research program, both in research innovations and HQP training, will continue to help Canada remain internationally competitive and influential in the rapidly growing wireless communication industry.