Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/120681
Título: Performance of an OFDM-CDMA HF modem
Autores/as: Raos, Ivana
Del Cacho, A.
Pérez-Álvarez, Iván A. 
Zazo-Bello, Santiago
Mendieta Otero, Eduardo 
Santana Sosa, Héctor 
Paez Borrallo, José
Clasificación UNESCO: 3325 Tecnología de las telecomunicaciones
Fecha de publicación: 2003
Editor/a: IET
Publicación seriada: IEE Conference Publication 
Conferencia: Ninth International Conference on HF Radio Systems and Techniques 
Resumen: Transmission in the high frequency (HF) band is considered not to be reliable, due to channel's highly dispersive characteristics, frequency selectivity, Doppler spread and multipath propagation. Briefly, it can be stated that all inconveniences of a wireless channel are present, making this channel a very hostile environment. Some innovations used in presented HF modem design are described. Orthogonal multicarrier modulation, specifically, orthogonal frequency division multiplex (OFDM), was applied, and utilization of code division multiple access (CDMA) leads to good use of channel's frequency diversity. A convenient receiver design for this type of modulation is presented as well. With Reed-Solomon channel coding possible modem's useful data rates are approximately 2400 and 3600 bps. Long interleaving and channel coding was avoided in order to achieve interactive transmission of digital voice. This, however, leaves an additional possibility of modem's performance enhancement if interactivity is not the primary goal.
URI: http://hdl.handle.net/10553/120681
ISBN: 0 85296 755 1
ISSN: 0537-9989
DOI: 10.1049/cp:20030425
Fuente: Ninth International Conference on HF Radio Systems and Techniques, 2003. (Conf. Publ. No. 493), p. 37-41
Colección:Actas de congresos
Vista completa

Google ScholarTM

Verifica

Altmetric


Comparte



Exporta metadatos



Los elementos en ULPGC accedaCRIS están protegidos por derechos de autor con todos los derechos reservados, a menos que se indique lo contrario.