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Iterative Receiver for MIMO-OFDM Systems. Intercarrier Interference Cancellation and Channel Estimation

Автор:   RUI L.
мягкая обложка
128 страниц
2009 год
Издательство:   Книга по Требованию
Цена:
2400 руб
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Описание:Furthermore, a simplified method is developed to reduce the computation complexity in the frequency- domain equalizer. In this book, we employ an iterative receiver with a decoder metric, so that the bias effect in the iterations is considerably reduced, which is critical for the performance of the iterative algorithm. A new algorithm is proposed for intercarrier interference cancellation in high mobility scenarios. The challenge in the detection of a space-time signal is to design a low-complexity detector, which can remove interference resulted from channel variations and approach the interference-free bound. In time-variant scenarios, we investigate a pilot-assisted channel estimation method under the assumption that the channel can be approximated by a linear model. It is shown that the proposed equalization algorithm with estimated channel state information can mitigate the effect of ICI effectively. The estimated channel will be used to update the frequency-domain equalizer and parallel interference canceler (PIC) in the iterative MIMO-OFDM receiver. OFDM with multiple antennas has been considered in the future wireless communication systems.


Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка

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Writing Windows WDM Device Drivers

You can send yourself a Set Device Power State IRP at any time. However, only the Power Manager can send Set System Power State IRPs. To process a Set System Power State IRP, you must send yourself a Set Device Power State IRP. That's right — you must ask for a Power IRP to be sent to the top of your device stack. Handling Device Power IRPs Handling a Set Device Power State is relatively straightforward. You must power down your device before all the lower drivers. Conversely, power your device up after all the lower drivers have powered up. This means setting a completion routine and doing the power up there. Handling System Power IRPs Handling a Set System Power State is a different kettle of fish. If you receive a Set System Power IRP, you must first determine the equivalent device power state. The Wdm2 driver is put in the fully on device state D0 for the fully on system state S0. For all other system states, the Wdm2 device state is fully off, D3. If the current device state is not the same as the required device state, you must act to change it ...»

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