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Carte Multi-user MIMO-OFDM in practice Jan Malte Schellmann

Multi-user MIMO-OFDM in practice

Enabling spectrally efficient transmission over time-varying channels

Autor: Jan Malte Schellmann
Limbă: engleză
Legare: Carte broșată
Editura: Südwestdeutscher Verlag für Hochschulschriften
Disponibilitate: În depozitul extern
Expediem în 5-8 zile
382.26 lei
The combination of MIMO multiple antenna technique§ together with OFDM multi-carrier transmission pr...

Informații despre carte

Autor
Jan Malte Schellmann
Limbă
engleză
Legare
Carte - Carte broșată
Publicat
2009
Pagini
164
EAN
9783838110561
Enbook ID
07086116
Editura
Südwestdeutscher Verlag für Hochschulschriften
Greutate
234
Dimensiuni
150 x 220 x 11

Descriere completă

The combination of MIMO multiple antenna technique§ together with OFDM multi-carrier transmission promises to§ achieve high spectral efficiencies while setting moderate§ complexity demands on transmitter and receiver structures. In§ multi-user systems, the achievable throughput can be improved§ further by assigning the available system resources to the§ users experiencing favourable channel conditions. Based on§ this idea, the concept of channel-adaptive transmission for§ MIMO-OFDM has been developed, where the transmission is§ adapted to the current channel conditions. However, the time§ variant nature of the radio channels, which is caused by§ movement of the user terminals or by impairments in the§ transmission chain, may introduce severe distortions into the§ transmission system, which effectively limit the spectral§ efficiencies achievable in practice. This dissertation§ addresses methods for signal transmission in multi-user§ MIMO-OFDM systems in a practical context and finds solutions§ to overcome the signal degradations caused by the§ channelâ s time variance for different§ scenarios, paving the way for spectrally efficient MIMO-OFDM§ transmission in practice.

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