arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.07332eess.SPcs.AR
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模拟与数字空间变换:吞吐量、功耗和面积比较

Analog vs. Digital Spatial Transforms: A Throughput, Power, and Area Comparison

Zephan M. Enciso, Seyed Hadi Mirfarshbafan, Oscar Castañeda, Clemens JS. Schaefer, Christoph Studer, Siddharth Joshi

摘要:

处理多个并行模拟信号以简化下游信号处理的空间线性变换广泛用于多天线通信系统、机器学习推理、数据压缩、音频和超声应用等。在过去,已经提出了各种各样的混合信号以及数字空间变换电路-然而,一个长期存在的问题是,在吞吐量、功耗和面积方面,模拟变换还是数字变换更优越。在本文中,我们专注于阿达玛变换和执行的最先进的模拟和数字电路在相同的65 nm CMOS工艺实现空间变换的系统比较。我们分析的吞吐量,功率和面积之间的权衡,我们确定的制度,混合信号或数字阿达玛变换是可取的。我们的比较表明,(i)没有明显的赢家,(ii)模数转换通常是主导面积和能源效率-而不是空间变换。

英文摘要:

Spatial linear transforms that process multiple parallel analog signals to simplify downstream signal processing find widespread use in multi-antenna communication systems, machine learning inference, data compression, audio and ultrasound applications, among many others. In the past, a wide range of mixed-signal as well as digital spatial transform circuits have been proposed---it is, however, a longstanding question whether analog or digital transforms are superior in terms of throughput, power, and area. In this paper, we focus on Hadamard transforms and perform a systematic comparison of state-of-the-art analog and digital circuits implementing spatial transforms in the same 65\,nm CMOS technology. We analyze the trade-offs between throughput, power, and area, and we identify regimes in which mixed-signal or digital Hadamard transforms are preferable. Our comparison reveals that (i) there is no clear winner and (ii) analog-to-digital conversion is often dominating area and energy efficiency---and not the spatial transform.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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