SBIR Phase II: Spiral Polynomial Division Multiplexing

该项目更广泛的影响/商业潜力在于它解决了带宽危机，即通过固定数量的日益拥挤的频谱传输指数级增长的数据量的问题。带宽危机通过限制通信限制了经济增长，也对国防和灾害应对提出了非常严峻的挑战。因此，更好地利用有限的频谱具有很高的社会和商业重要性。该项目将研究一种称为螺旋调制的新方法，以实现比以前认为的更高的频谱效率通信，从而直接解决带宽危机。在商业上，这可以促进更快的数据传输，增强现有业务应用程序并启用新应用程序。螺旋调制适用于任何形式的电磁通信，无论是无线的还是有线的。它可能导致广泛的通信领域的商业化，包括但不限于无线、移动互联网、无人驾驶汽车、汽车、航空和物联网。这是一种民用和国防两用技术。最终，螺旋调制可能成为全球电信行业的核心技术。这个小企业创新研究（SBIR）第二阶段项目将新的数学应用于将信息编码成电信波形的问题。在当前的数字通信中，信息是通过在每个符号周期内具有恒定振幅的正弦波构成的符号波形来传输的。众所周知，这种方法可以产生可以实现的最高光谱效率的明显上限。通过从振幅连续变化的正弦波形中构造符号波形，螺旋调制绕过了频谱效率的理论限制。在前期第一阶段研究的基础上，本项目将构建端到端硬件原型，以确定螺旋调制的实现路径和性能特征。研究将分阶段进行，从波形设计和频谱效率测量实验，到端到端无线电软件设计，硬件原型开发和最佳实践文档。预计该研究将显示出比现有信号调制技术显著的频谱效率优势。螺旋调制的其他可能的优点也可能出现，例如对干涉和相位畸变的更大容忍度。

The broader impact/commercial potential of this project is that it addresses the bandwidth crisis, the problem of transmitting an exponentially growing amount of data through a fixed amount of increasingly congested spectrum. The bandwidth crisis limits economic growth by constraining communication, and also poses very serious challenges for national defense and disaster response. Making better use of limited spectrum is therefore of high societal and commercial importance. This project will study a new approach, called spiral modulation, for achieving much more spectrally efficient communication than previously thought possible and thereby directly addressing the bandwidth crisis. Commercially, this could facilitate much more rapid data transfer, enhancing existing business applications and enabling new ones. Spiral modulation is applicable to any form of electromagnetic communication, whether wireless or wire-based. It could lead to commercialization across a wide range of communication sectors including but not limited to wireless, mobile internet, unmanned vehicles, automotive, aviation, and Internet of Things. It is a dual use technology with both civilian and defense applications. Ultimately, spiral modulation could become the core technology for the worldwide telecommunications industry.This Small Business Innovation Research (SBIR) Phase II project applies new mathematics to the problem of encoding information into waveforms for telecommunication. In current digital communication, information is transmitted using symbol waveforms constructed from sinusoids which have constant amplitude over each symbol period. This approach is known to produce a sharp upper bound on the highest spectral efficiency that can be achieved. By instead constructing symbol waveforms from sinusoidal waveforms with continuously-varying amplitude, spiral modulation bypasses the theoretical limitation on spectral efficiency. Building on prior Phase I research, this project will build an end-to-end hardware prototype to establish the implementation path and performance characteristics of spiral modulation. The research will progress in stages from waveform design and spectral efficiency measurement experiments, through end-to-end radio design in software, the hardware prototype development and documentation of best practices. It is anticipated that this research will show significant spectral efficiency advantages over existing signal modulation techniques. Other possible advantages for spiral modulation may also appear, such as greater tolerance for interference and phase distortion.