2020/02/18 by Veljko Boljanovic, Han Yan, Boljanovic, Veljko +9 · 1 citation
Engineering · #FOS: Electrical engineering #Microwave Engineering and Waveguides #Millimeter-Wave Propagation and Modeling #Radio Frequency Integrated Circuit Design #Signal Processing (eess.SP) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2002.07849
openalex publication_date 2020/02/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Beam training is one of the most important and challenging tasks in\nmillimeter-wave and sub-terahertz communications. Novel transceiver\narchitectures and signal processing techniques are required to avoid\nprohibitive training overhead when large antenna arrays with narrow beams are\nused. In this work, we leverage recent developments in wide range\ntrue-time-delay (TTD) analog arrays and frequency dependent probing beams to\naccelerate beam training. We propose an algorithm that achieves high-accuracy\nangle of arrival estimation with a single training symbol. Further, the impact\nof TTD front-end impairments on beam training accuracy is investigated,\nincluding the impact of gain, phase, and delay errors. Lastly, the study on\nimpairments and required specifications of resolution and range of analog delay\ntaps are used to provide a design insight of energy efficient TTD array, which\nemploys a novel architecture with discrete-time sampling based TTD elements.\n