Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/42970
Title: Impact of CSI latency on HF multi-carrier communications for delay-sensitive applications
Authors: López-Pérez, J. 
Pérez-Álvarez, I. A. 
Zazo-Bello, S.
Melián-Gutiérrez, L. B.
Amaro-García, A.
UNESCO Clasification: 3307 Tecnología electrónica
Issue Date: 2009
Journal: IET Conference Publications
Conference: IET 11th International Conference on Ionospheric Radio Systems and Techniques, IRST 2009 
Abstract: Multi-carrier modulations are widely used in HF communications, and particularly OFDM. Delay-sensitive applications can make use of spreading schemes such as OFDM-CDM in order to cope with deep nulls in the channel. If CSI is known at transmitter, it is possible to improve performance using a bit-loading algorithm for OFDM and channel matrix SVD decomposition for OFDM-CDM. If a source of non-ideality in CSI due to latency is taken into consideration, it is shown how performance decreases. A receiver-side technique is applied to OFDM-CDM communications to compensate for delay-incurred matrices mismatch.
URI: http://hdl.handle.net/10553/42970
ISBN: 9781849191234
DOI: 10.1049/cp.2009.0068
Source: IET Conference Publications,v. 2009, p. 225-229
Appears in Collections:Actas de congresos
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