... 日常信息反馈 Daily Information Feedback 质量信息反馈单 Quality Information Feedback Sheet 信道信息反馈 Channel Information Feedback ...
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同时，如果无线资源分配基于完全信道信息反馈，将会增加系统的信息反馈量，造成较大的信息冗余。
At the same time, if radio resource allocation is fully based on channel state information, these increase the needed number of feedback bits and lead to feedback overhead.
如果可以估计信道的参数，并将这些估计信息反馈给发送端，发送端就可以根据信道参数自适应调整发送策略。
When the channel can be estimated and this estimate is sent back to the transmitter, the transmission scheme can be adapted relatively to the channel characteristics.
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