Chang-Woo Pyo

TL;DR: The proposed beamforming protocol employs discrete phase-shifters, which significantly simplifies the structure of DEVs as compared to the conventional BF with phase-and-amplitude adjustment, at the expense of a gain degradation of less than 1 dB.

TL;DR: The proposed beamforming scheme is based on designed multi-resolution codebooks, which generate three kinds of patterns of different half power beam widths: quasi-omni pattern, sector and beam, and all the three stages can be completed within one superframe, which minimizes the potential interference to other systems during BF set-up period.

TL;DR: The proposed codebooks are a feasible design, they are the key basis of the beamforming protocol in 60GHz WPANs (IEEE 802.15.3c), and robust to phase shift errors.

TL;DR: In this article, the authors present the latest developments in regulatory status and standardization initiatives in the field of TV white space cognitive communication systems, focusing on the activities in the IEEE 802.11, 802.22, IEEE802.15, and DySPAN SC.

TL;DR: An air interface for ultra high-speed millimeter wave (60 GHz) systems which have been under standardization process at IEEE 802.15.3c is proposed: the proposed channel plan permits ease of portable device implementation employing the major crystal oscillator used in CDMA cellar phones.