Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/42974
Title: Multi-carrier techniques performance on ionospheric channel for delay-sensitive applications
Authors: López-Pérez, J. 
Zazo-Bello, S.
Pérez-Álvarez, I. 
Raos, I.
Mendieta-Otero, E. 
UNESCO Clasification: 3307 Tecnología electrónica
Issue Date: 2007
Journal: Proceedings - IEEE Military Communications Conference MILCOM
Conference: IEEE Military Communications Conference (MILCOM 2007) 
Military Communications Conference, MILCOM 2007 
Abstract: Multi-carrier modulations are widely employed in HF communications, and particularly OFDM, mainly because their ease of generation by means of DFT and also their appealing properties that can turn a selective fading channel into a set of flat channels. In order to cope with deep nulls in the channel traditional approach has been the use of channel coding and interleaving, thus causing an increase in communication delay. For delay-sensitive applications, spreading schemes over OFDM, such as OFDM-CDM can be applied. If CSI is known at transmitter, system performance can be improved by BER-optimum power loading and channel matrix SVD decomposition of OFDM-CDM signal. These techniques are well suited to delay-sensitive applications as they incur in no further delays.
URI: http://hdl.handle.net/10553/42974
ISBN: 978-1-4244-1512-0
1424415136
9781424415137
ISSN: 2155-7578
DOI: 10.1109/MILCOM.2007.4454891
Source: 2007 Ieee Military Communications Conference, Vols 1-8[ISSN 2155-7578], p. 2801-+, (2007)
Appears in Collections:Actas de congresos
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