Modeling and Analysis in Frequency of the UWB Channel with Lognormal Statistics for MB-OFDM Systems
In this paper, the ultra-wideband channel with multiband orthogonal frequency division multiplexing (MB-OFDM-UWB) is analyzed in the frequency domain. For UWB channels with lognormal small-scale fading in time domain, we obtain closed analytical expressions for the parameters that model the sub-carr...
- Autores:
-
Llano Ramírez, Gonzalo
Rubio, Lorenzo
Reig, Juan
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2009
- Institución:
- Universidad ICESI
- Repositorio:
- Repositorio ICESI
- Idioma:
- spa
- OAI Identifier:
- oai:repository.icesi.edu.co:10906/79551
- Acceso en línea:
- http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=5173463
http://hdl.handle.net/10906/79551
http://dx.doi.org/10.1109/TLA.2009.5173463
- Palabra clave:
- Rights
- openAccess
- License
- https://creativecommons.org/licenses/by-nc-nd/4.0/
| Summary: | In this paper, the ultra-wideband channel with multiband orthogonal frequency division multiplexing (MB-OFDM-UWB) is analyzed in the frequency domain. For UWB channels with lognormal small-scale fading in time domain, we obtain closed analytical expressions for the parameters that model the sub-carrier fading statistics of MB-OFDM-UWB system, and we show that magnitudes of the channel frequency responses of each subcarrier can be approximated by a Nakagami-m random variable, where the fading parameter (m), mean power Omega and the correlation, rhoij are expressed in terms of the following parameters: arrival time of the clusters, inter-arrival time of the rays inside the clusters, and power decay constants of the rays and clusters. |
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