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In these systems, some of the facilities need channel state information (CSI).
The differential modulation schemes do not need channel estimation and compensation and are independent with δ.
Another important property of the proposed equalizer is that it does not need channel information.
Instead, the opportunistic beamforming (OBF) with dumb antennas which does not need channel feedback is proper for high-speed railway.
The MIMO beamforming algorithms need channel state information at both sides of the link, which is obtained by a specific training procedure.
There are some features which need channel state information (CSI) to be available such as coherent demodulation, beamforming, relay selection, and so on [3, 4].
Similar(51)
Voters troubled by immigration, bail-outs or austerity need channels for their concerns, and mainstream parties have often failed to provide them.
You wouldn't need channels.
Since this approximation needs channel state information, the equalizer is preceded by an adaptive channel identifier.
Additionally, each user and each BS can obtain the needed channel information via existing control stations in the network.
When parents of children with special needs channel those highly charged emotions into something meaningful, it can be so healthy for families.
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