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Książka 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
Język: Angielski
Oprawa: Miękka
Wydawca: Südwestdeutscher Verlag für Hochschulschriften
Dostępność: Na zamówienie
Wysyłamy za 17-27 dni
333.59 zł
The combination of MIMO multiple antenna technique§ together with OFDM multi-carrier transmission pr...

Informacje o książce

Autor
Jan Malte Schellmann
Język
Angielski
Oprawa
Książka - Miękka
Data wydania
2009
strony
164
EAN
9783838110561
Enbook ID
07086116
Wydawca
Südwestdeutscher Verlag für Hochschulschriften
Waga
234
Wymiary
150 x 220 x 11

Pełny opis

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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