面向数字信号处理领域的近似计算技术应用与研究进展  

Progress in The Application and Research of Approximate Computation Techniques Oriented to The Field of Digital Signal Processing

作　　者：王旭[1,2] 陈珂 闫成刚 王成华 刘伟强[1,2] WANG Xu;CHEN Ke;YAN Chenggang;WANG Chenghua;LIU Weiqiang(College of Integrated Circuits,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;Key Laboratory of Aerospace Integrated Circuits and Microsystem,Ministry of Industry and Information Technology,Nanjing 211106,China)

机构地区：[1]南京航空航天大学集成电路学院,南京211106 [2]空天集成电路与微系统工信部重点实验室,南京211106

出　　处：《电子与信息学报》2024年第5期1843-1852,共10页Journal of Electronics & Information Technology

基　　金：国家重点研发计划青年科学家项目(2022YFB4500200);国家自然科学基金(62101252,62022041)。

摘　　要：在信号处理领域,近似计算技术备受关注。复杂算法和海量数据限制了应用的处理速度且增加了系统硬件消耗。由于信号具有冗余性,精确结果并非必需,满足用户可接受的结果已足够。因此,采用近似计算技术可以有效减少计算量,提高计算效率和系统性能。该文以近似计算技术的不同设计层次为切入,首先介绍了信号处理应用的特点,综述了近年来近似计算技术在算法和电路层面的研究进展,并调研了通信、视频图像以及雷达等信号处理方向的近似计算技术方案。最后,对该领域的发展方向进行了讨论和展望,为推动近似计算技术在信号处理领域的应用提供了思路。In the field of signal processing,approximate computing techniques have garnered significant attention.Complex algorithms and massive data impose limitations on processing speed and increase system hardware consumption.Since signals often contain redundancy,precise results are not always necessary,and achieving results acceptable to users is sufficient.Therefore,employing approximate computing techniques can effectively reduce computational complexity,enhance computational efficiency,and improve system performance.This paper takes a hierarchical approach to the design of approximate computing techniques.It first introduces the characteristics of signal processing applications,reviews recent research progress in approximate computing techniques at the algorithm and circuit levels,and investigates approximate computing solutions in signal processing directions such as communication,video imaging,and radar.Finally,it discusses and prospects the development direction of this field,providing insights to promote the application of approximate computing techniques in signal processing.

关 键 词：近似计算 新兴计算范式 数字信号处理 研究进展 

分 类 号：TN402[电子电信—微电子学与固体电子学] TP183[自动化与计算机技术—控制理论与控制工程]