TY - JOUR
AU1 - Rasteh, Ali
AU2 - Hari, Raghavendra Palayam
AU3 - Guo, Hao
AU4 - Mezzavilla, Marco
AU5 - Rangan, Sundeep
AB - Abstract:The upper mid-band (or FR3, spanning 6-24 GHz) is a crucial frequency range for next-generation mobile networks, offering a favorable balance between coverage and spectrum efficiency. From another perspective, the systems operating in the near-field in both indoor environment and outdoor environments can support line-of-sight multiple input multiple output (MIMO) communications and be beneficial from the FR3 bands. In this paper, a novel method is proposed to measure the near-field parameters leveraging a recently developed reflection model where the near-field paths can be described by their image points. We show that these image points can be accurately estimated via triangulation from multiple measurements with a small number of antennas in each measurement, thus affording a low-cost procedure for near-field multi-path parameter extraction. A preliminary experimental apparatus is presented comprising 2 transmit and 2 receive antennas mounted on a linear track to measure the 2x2 MIMO channel at various displacements. The system uses a recently-developed wideband radio frequency (RF) transceiver board with fast frequency switching, an FPGA for fast baseband processing, and a new parameter extraction method to recover paths and spherical characteristics from the multiple 2x2 measurements.
TI - Near-Field Measurement System for the Upper Mid-Band
JF - Electrical Engineering and Systems Science
DO - 10.48550/arxiv.2412.02815
DA - 2024-12-03
UR - https://www.deepdyve.com/lp/arxiv-cornell-university/near-field-measurement-system-for-the-upper-mid-band-0vFfQB4lO2
VL - 2024
IS - 2412
DP - DeepDyve
ER -