naa a22 4500 510792375 CHVBK 20180411083324.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-012-0985-8 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0985-8 Step-Wisely Refinement Based Beam Searching Scheme for 60 GHz Communications [Elektronische Daten] [Wei-Xia Zou, Guang-Long Du, Bin Li, Zheng Zhou] In the emerging 60GHz millimeter-wave communications, the beam-forming technique has been widely recommended to efficiently compensate the significant path-loss in such bands. Unfortunately, the complexity of beam searching procedure, which is used to find the optimal beam-pair from a prescribed codebook, may generally tend to be unaffordable with the increasing of antenna elements. By formulating the beam-searching as a numerical optimization problem and properly exploring the beam characteristics generated by different array element numbers, the article proposed a fast beam searching algorithm. Compared with the existing schemes in current standards, our algorithm can significantly reduce the preamble transmissions accompanying energy consumption during beam searching process. Numerical simulation results further validate the superiority of the presented algorithm. Springer Science+Business Media New York, 2013 60 GHz millimeter-wave communications nationallicence Wireless personal area networks nationallicence Beam-forming nationallicence Beam-training nationallicence Step-wisely refinement nationallicence Numerical optimization nationallicence BF : Beam-forming nationallicence BRP : Beam refinement procedure nationallicence CSI : Channel state information nationallicence EBW : Efficient beam width nationallicence GRS : Global refinement search nationallicence ISS : Initiator sector sweep nationallicence ISWR-P : Improved SWR-P nationallicence ISWR-R : Improved SWR-R nationallicence LOS : Line-of-sight nationallicence mmWave : Millimeter-wave nationallicence NLOS : Non-line-of-sight nationallicence PHY : Physical layer nationallicence RS : Refinement search nationallicence RSS : Responder sector sweep nationallicence SLS : Sector level sweep nationallicence SNR : Signal-to-noise ratio nationallicence SWR : Step-wisely refinement nationallicence SWR-P : SWR with powell method nationallicence SWR-R : SWR with rosenbrock method nationallicence TG : Task group nationallicence WPAN : Wireless personal area networks nationallicence WLAN : Wireless local area networks nationallicence Zou Wei-Xia Key Lab of Universal Wireless Communications, MOE Wireless Network Lab, Beijing University of Posts and Telecommunications, Inner Box. 96, 100876, Beijing, China aut Du Guang-Long Key Lab of Universal Wireless Communications, MOE Wireless Network Lab, Beijing University of Posts and Telecommunications, Inner Box. 96, 100876, Beijing, China aut Li Bin Key Lab of Universal Wireless Communications, MOE Wireless Network Lab, Beijing University of Posts and Telecommunications, Inner Box. 96, 100876, Beijing, China aut Zhou Zheng Key Lab of Universal Wireless Communications, MOE Wireless Network Lab, Beijing University of Posts and Telecommunications, Inner Box. 96, 100876, Beijing, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 2993-3010 0929-6212 71:4<2993 2013 71 11277 https://doi.org/10.1007/s11277-012-0985-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0985-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zou Wei-Xia Key Lab of Universal Wireless Communications, MOE Wireless Network Lab, Beijing University of Posts and Telecommunications, Inner Box. 96, 100876, Beijing, China aut NATIONALLICENCE 700 1- Du Guang-Long Key Lab of Universal Wireless Communications, MOE Wireless Network Lab, Beijing University of Posts and Telecommunications, Inner Box. 96, 100876, Beijing, China aut NATIONALLICENCE 700 1- Li Bin Key Lab of Universal Wireless Communications, MOE Wireless Network Lab, Beijing University of Posts and Telecommunications, Inner Box. 96, 100876, Beijing, China aut NATIONALLICENCE 700 1- Zhou Zheng Key Lab of Universal Wireless Communications, MOE Wireless Network Lab, Beijing University of Posts and Telecommunications, Inner Box. 96, 100876, Beijing, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 2993-3010 0929-6212 71:4<2993 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer