每个移动单元每次只能利用一个信道作为它的通信链路。
Each mobile unit can only use one channel at a time for its communication link.
作为MAP译码算法的必要参数，信噪比通常通过信道估计单元得到。
As a necessary input parameter for MAP decoding algorithm, SNR was normally obtained from the channel estimation unit.
首次研究白高斯噪声（AWGN）信道下超宽带无线电通信系统中单个数据包单元发射信号能量的优化。
In this paper, the optimization of the transmitted signal energy for a data packet unit in UWB radio communications in additive white Gaussian noise(AWGN) channel is firstly investigated.
同时，信道分配单元也不是越小越好，适当提高分配单元的大小可以在一定程度上减轻信道信息误差的影响。
It's also observed that, when the channel information is not sufficiently reliable, extending the channel allocation unit can, to some extent, lessen the impact of channel information error.
同时，信道分配单元也不是越小越好，适当提高分配单元的大小可以在一定程度上减轻信道信息误差的影响。
It's also observed that, when the channel information is not sufficiently reliable, extending the channel allocation unit can, to some extent, lessen the impact of channel information error.
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