NDLI: Uplink reference signal design for GEO dual-polarized MIMO satellite LTE communication system

Content Provider	IEEE Xplore Digital Library
Author	Bo Qiang Lixin Gu Bin Jiang Xiqi Gao
Copyright Year	2014
Description	Author affiliation: Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China (Bo Qiang; Lixin Gu; Bin Jiang; Xiqi Gao)
Abstract	In this paper, we propose a new uplink reference signal (RS) structure and channel estimation scheme for long term evolution (LTE) compatible geostationary earth orbit (GEO) satellite communication systems over dual-polarized multiple-input multiple-output (MIMO) channels. The conventional discrete Fourier transform (DFT) based least square (LS) channel estimator suffers from a spectral leakage, which results in an irreducible inter-antenna interference in MIMO systems. By exploiting the characteristic of satellite channel, we put forward a joint slot RS structure in both code division multiplexing (CDM) and frequency division multiplexing (FDM) modes, ensuring the orthogonality between antennas, the former of which is compatible with the terrestrial LTE system. In order to further eliminate the influence of noise, a simple implementation of the optimal channel estimator in the linear minimal mean square error (LMMSE) sense in discrete cosine transform (DCT) domain is derived. Finally, the effectiveness of the proposed RS structure and channel estimation method is verified via simulations.
Starting Page	422
Ending Page	426
File Size	191013
Page Count	5
File Format	PDF
ISBN	9781479941469
DOI	10.1109/ICCChina.2014.7008314
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-10-13
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Slot antennas Transmitting antennas Channel estimation Satellite MIMO Discrete cosine transforms Uplink Niobium Joint slot Dual-polarized MIMO
Content Type	Text
Resource Type	Article

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