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arXiv 2003.05375cs.ITeess.SPmath.IT
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相关性对反向散射通信系统容量的影响研究

On the Effect of Correlation on the Capacity of Backscatter Communication Systems

J. L. Matez-Bandera, P. Ramirez-Espinosa, J. D. Vega-Sanchez, F. J. Lopez-Martinez

AI总结:

该研究分析反向散射通信系统中前后链路相关性对容量的影响,推导相关瑞利乘积衰落信道下平均容量解析及高低SNR闭式渐近式,发现固定目标SNR时相关性有害、固定功率预算时部分场景下有益。

摘要:

我们分析了前向链路与反向链路之间的相关性对反向散射通信系统容量的影响。为此,我们推导了相关瑞利乘积衰落信道下平均容量的解析表达式,同时给出了高信噪比(SNR)与低SNR场景下的闭式渐近表达式。结果表明:在目标SNR固定时,相关性确实会带来负面影响;与普遍认知相反,当功率预算固定时,相关性在某些情况下反而能产生增益。

英文摘要:

We analyse the effect of correlation between the forward and backward links on the capacity of backscatter communication systems. To that aim, we obtain an analytical expression for the average capacity under a correlated Rayleigh product fading channel, as well as closed-form asymptotic expressions for the high and low signal-to-noise ratio (SNR) regimes. Our results show that correlation is indeed detrimental for a fixed target SNR; contrarily to the common belief, we also see that correlation can be actually beneficial in some instances when a fixed power budget is considered.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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