FR3上中频段基于格拉斯曼信号的非相干MIMO：原型与实验评估
Noncoherent MIMO in the FR3 Upper Mid-Band Using Grassmannian Signaling: Prototype and Experimental Evaluation
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中文总结 AI 辅助
本文首次实现并实验验证了FR3上中频段15 GHz下基于格拉斯曼信号的非相干MIMO原型，无需CSI，结合OFDM设计，在多种场景下与仿真吻合，满足低频谱效率高可靠性需求。
中文摘要 AI 辅助
本工作展示了一种基于格拉斯曼信号的非相干多输入多输出（MIMO）系统的原型实现，其中发射机和接收机均无需信道状态信息（CSI），系统在面向6G的FR3上中频段（频率范围3）的15 GHz载波频率下运行。据我们所知，这是文献中首次报道的超越sub-6 GHz频段的格拉斯曼信号原型实现。我们明确了在该频段应用格拉斯曼信号（一种酉空时调制（USTM）形式）的动机，即用于对频谱效率要求较低但对可靠性和功率效率有严格要求的无线与移动应用。基于这一思路，我们提出了一种与正交频分复用（OFDM）集成的系统设计，以应对FR3较高载波频率带来的挑战，同时确保在包括城市、乡村环境以及车载通信在内的广泛场景中可靠运行。随后，我们展示了所提设计的原型实现，该实现基于软件定义无线电（SDR）设备，并集成了射频（RF）混频器、滤波器及功率放大器，以确保在目标频段内的充分运行。基于符号错误率（SER）测量的空中（OTA）实验在非视距（NLoS）和视距（LoS）场景以及不同数据速率下进行，结果与软件仿真良好吻合，从而验证了原型实现。
英文摘要
This work presents a prototype implementation of a noncoherent multiple-input multiple-output (MIMO) system based on Grassmannian signalling, where neither the transmitter nor receiver requires channel state information (CSI), operating at a carrier frequency of 15 GHz in the frequency range 3 (FR3) upper mid-band envisioned for 6G. To the best of our knowledge, this is the first prototype implementation of Grassmannian signaling reported in the literature beyond sub-6 GHz bands. We identify the motivation of applying Grassmannian signaling, a form of unitary space-time modulation (USTM), in this band for wireless and mobile applications with low spectral-efficiency requirements but strict reliability and power-efficiency demands. With this idea in mind, we present a system design integrated with orthogonal frequency-division multiplexing (OFDM) that addresses the challenges associated with the higher carrier frequencies of FR3 while providing reliable operation across a broad range of scenarios, including urban and rural environments as well as vehicular communications. We then present the prototype implementation of the proposed design, based on software-defined radio (SDR) devices integrated with radio-frequency (RF) mixers, filters, and power amplifiers to ensure adequate operation in the targeted band. Over-the-air (OTA) experiments based on symbol error rate (SER) measurements under non-line-of-sight (NLoS) and line-of-sight (LoS) scenarios, and across different data rates, show good agreement with software simulations, thereby validating the prototype implementation.
发表机构
- Universidad de Oviedo（奥维耶多大学）
机构由 AI 辅助整理，请以论文原文为准。
