On Noncoherent Fading Relay Channels at High Signal-to-Noise Ratio
On Noncoherent Fading Relay Channels at High Signal-to-Noise Ratio
复制标题
高信噪比非相干衰落中继信道研究
DOI：
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发表时间：
2011
影响因子：
2.5
通讯作者：
G. Kramer
中科院分区：
文献类型：
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作者：
T. Koch;G. Kramer
研究了非相干规则衰落中继信道的容量，其中所有终端都知道衰落统计，但不知道它们的实现。它表明，如果发射机和接收机之间的信道的衰落系数可以更准确地预测从其无限的过去比中继和接收机之间的信道的衰落系数，然后在高的信号噪声比（SNR），中继不增加容量。它进一步表明，如果发射机和中继之间的信道的衰落系数可以更准确地预测从其无限的过去比中继和接收机之间的信道的衰落系数，然后在高SNR，可以实现通信速率是在一个比特的能力的多输入单输出衰落信道的结果时，发射机和中继可以合作。
The capacity of noncoherent regular-fading relay channels is studied where all terminals are aware of the fading statistics but not of their realizations. It is shown that if the fading coefficient of the channel between the transmitter and the receiver can be predicted more accurately from its infinite past than the fading coefficient of the channel between the relay and the receiver, then at high signal-to-noise ratio (SNR), the relay does not increase capacity. It is further shown that if the fading coefficient of the channel between the transmitter and the relay can be predicted more accurately from its infinite past than the fading coefficient of the channel between the relay and the receiver, then at high SNR, one can achieve communication rates that are within one bit of the capacity of the multiple-input single-output fading channel that results when the transmitter and the relay can cooperate.