Adaptive Radio Platforms based on Recursive Receivers Employing Non-Linearity Compensation and Interference Cancellation

目的：本研究的目的是开发创新的无线电接收器架构和电路，目的是显着提高无线电前端的功率效率和干扰处理能力之间的权衡。该方法基于低功耗前端架构，如递归接收器和自适应干扰消除和线性化技术。研究的重点将放在具有多模式和多频段功能的无线系统接收器上。智力优势：该研究将包括详细调查在短信道互补金属氧化物半导体（CMOS）工艺中实现的无线接收器模拟前端中显著减轻动态范围限制的方法。通过使用前馈线性化和干扰消除等技术，这些限制将在接收器的信号数字化之前得到解决，同时最大限度地减少外部无源滤波器的使用，以帮助在未来几代CMOS工艺中促进无线收发器的集成。基于这些方法的接收器架构将在130nm或类似的短通道CMOS工艺中实现。更广泛的影响：作为本研究的一部分，开发的敏捷无线电前端架构预计将影响几种当前和未来的无线系统，用于各种终端应用，如生物医学、通信和计算。这项研究和培训计划将涉及研究生和本科生水平的学生研究人员，并包括来自代表性不足群体的学生。研究结果将用于更新课程，并将通过出版物、研讨会和网站传播。

Objective: The objective of this research is to develop innovative radio receiver architectures and circuits with a goal to significantly improve the trade-off between power-efficiency and interference-handling capability in radio front-ends. The approach is based on low-power front-end architectures such as recursive receivers and techniques for adaptive interference cancellation and linearization. A key focus of the research will be on receivers for wireless systems with multi-mode and multi-band functionality.Intellectual Merit: The research will include a detailed investigation of approaches to significantly alleviate the dynamic range constraint in the analog front-ends of wireless receivers implemented in short-channel complementary metal-oxide-semiconductor (CMOS) processes. Through the use of techniques such as feedforward linearization and interference cancellation, these constraints will be addressed prior to signal digitization in the receiver, while minimizing the use of external passive filters, in order to help facilitate integration of wireless transceivers in future generations of CMOS processes. A receiver architecture based on these approaches will be implemented in a 130nm or similar short-channel CMOS process.Broader Impacts: The agile radio front-end architectures developed as part of this research are expected to impact several current and future wireless systems for diverse end-applications such as biomedical, communications and computing. The research and training program will involve student researchers at the graduate and undergraduate levels, and include students from underrepresented groups. Research results will be used to update courses, and will be disseminated through publications, seminars and websites.