A Wideband Sliding Correlation Channel Sounder in 65 nm CMOS: Evaluation Board Performance
A Wideband Sliding Correlation Channel Sounder in 65 nm CMOS: Evaluation Board Performance
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DOI：
10.1109/tcsii.2021.3087032
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
Dipankar Shakya;Ting Wu;M. Knox;T. Rappaport
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文献类型：
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作者：
Dipankar Shakya;Ting Wu;M. Knox;T. Rappaport
毫米波 (mmWave) 和太赫兹 (THz) 频率的超宽带宽推动了无线传感、定位、机器人等新兴应用的发展。在这些极高频率下表征和有效利用无线信道需要详细了解信道的无线电传播特性。这些知识是通过使用无线收发器对操作条件进行经验观察而开发的，无线收发器通过信道探测来测量脉冲响应。如今，尖端的通道探测仪依赖于多个笨重的射频硬件组件，这些组件具有复杂的互连、大的寄生效应和 sub-GHz 射频带宽。本简介介绍了一种基于滑动相关的紧凑型通道探测仪基带，该基带基于使用 65 nm CMOS 的单片集成电路 (IC) 构建，作为实现 2 GHz RF 带宽的评估板实现。该 IC 是世界上第一个采用低成本 CMOS 实现的每秒千兆位通道发声器基带。所提出的单板系统可用于发射和接收基带，以研究多径特性和路径损耗。因此，单板实现为基于滑动相关的信道探测提供了一种廉价且紧凑的解决方案，具有 1 ns 多径延迟分辨率。
Emerging applications such as wireless sensing, position location, robotics, and many more are driven by the ultra-wide bandwidths available at millimeter-wave (mmWave) and Terahertz (THz) frequencies. The characterization and efficient utilization of wireless channels at these extremely high frequencies require detailed knowledge of the radio propagation characteristics of the channels. Such knowledge is developed through empirical observations of operating conditions using wireless transceivers that measure the impulse response through channel sounding. Today, cutting-edge channel sounders rely on several bulky RF hardware components with complicated interconnections, large parasitics, and sub-GHz RF bandwidth. This brief presents a compact sliding correlation-based channel sounder baseband built on a monolithic integrated circuit (IC) using 65 nm CMOS, implemented as an evaluation board achieving a 2 GHz RF bandwidth. The IC is the world’s first gigabit-per-second channel sounder baseband implemented in low-cost CMOS. The presented single-board system can be employed at both the transmit and receive baseband to study multipath characteristics and path loss. Thus, the single-board implementation provides an inexpensive and compact solution for sliding correlation-based channel sounding with 1 ns multipath delay resolution.