標題: A Hardware-Scalable DSP Architecture for Beam Selection in mm-Wave MU-MIMO Systems
作者: Yeh, Chun-Yu
Chu, Ting-Chung
Chen, Chiao-En
Yang, Chia-Hsiang
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Beam selection;hybrid beamformer;beamspace MIMO;mm-wave;CORDIC
公開日期: 1-十一月-2018
摘要: Millimeter-wave (mm-Wave) communication, operating from 30- to 300-GHz bands with wider available spectrum, has now emerged as a promising solution for future wireless systems. To reduce the hardware complexity of mm-Wave transceivers, beam-selection techniques combined with beamspace multiple-input multiple-output (MIMO) communications have been proposed in the literature. In such a system, beam selection is performed to exploit the near-sparse nature in the mm-Wave channel and, hence, is crucial to the system performance. This paper presents the world's first digital signal processing (DSP) architecture design for beam selection operation in an mm-Wave multi-user MIMO system. A computationally efficient beam-selection algorithm is first presented. Based on the proposed algorithm, a hardware-scalable beam selection processor is implemented using coordinate rotation digital computers arithmetic. To establish the validity of the concept, the proposed processor is implemented in a 40-nm CMOS technology, integrating 360k logic gates in an area of 0.5625 mm(2), while dissipating 44 mW at 266 MHz in an MU-MIMO system with 16 beams and 8 users.
URI: http://dx.doi.org/10.1109/TCSI.2018.2856124
http://hdl.handle.net/11536/148270
ISSN: 1549-8328
DOI: 10.1109/TCSI.2018.2856124
期刊: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
Volume: 65
起始頁: 3918
結束頁: 3928
顯示於類別:期刊論文