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Sensors 2016, 16(7), 1129; doi:10.3390/s16071129

Efficient Preamble Design Technique for Millimeter-Wave Cellular Systems with Beamforming

1
School of Electrical and Electronic Engnineering, Chung-Ang University, Seoul 156-756, Korea
2
LG Electronics, Seoul 137-893, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Yonghui Li
Received: 29 April 2016 / Revised: 13 July 2016 / Accepted: 18 July 2016 / Published: 21 July 2016
(This article belongs to the Special Issue Millimeter Wave Wireless Communications and Networks)
View Full-Text   |   Download PDF [2368 KB, uploaded 21 July 2016]   |  

Abstract

The processing time for beam training in millimeter-wave (mmWave) cellular systems can be significantly reduced by a code division multiplexing (CDM)-based technique, where multiple beams are transmitted simultaneously with their corresponding Tx beam IDs (BIDs) in the preamble. However, mmWave cellular systems with CDM-based preambles require a large number of cell IDs (CIDs) and BIDs, and a high computational complexity for CID and BID (CBID) searches. In this paper, a new preamble design technique that can increase the number of CBIDs significantly is proposed, using a preamble sequence constructed by a combination of two Zadoff-Chu (ZC) sequences. An efficient technique for the CBID detection is also described for the proposed preamble. It is shown by simulations using a simple model of an mmWave cellular system that the proposed technique can obtain a significant reduction in the complexity of the CBID detection without a noticeable performance degradation, compared to the previous technique. View Full-Text
Keywords: millimeter-wave; beam-training; Zadoff-Chu sequence; beamforming; OFDM millimeter-wave; beam-training; Zadoff-Chu sequence; beamforming; OFDM
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Han, D.G.; Kim, Y.J.; Cho, Y.S. Efficient Preamble Design Technique for Millimeter-Wave Cellular Systems with Beamforming. Sensors 2016, 16, 1129.

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