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arXiv 0810.3564cs.ITmath.IT
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低输入功率下的泊松信道

The Poisson Channel at Low Input Powers

Amos Lapidoth, Jeffrey H. Shapiro, Vinodh Venkatesan, Ligong Wang

摘要:

研究了平均功率受限或平均和峰值功率受限离散时间泊松信道在低输入功率下的渐近容量。对于暗电流为零或随其平均输入功率$E$线性衰减到零的泊松信道,容量缩放类似于小$E$的$E\log\frac{1}{E}$。对于暗电流是非零常数的泊松沟道,容量缩放到常数内,如对于小$E$的$E\log\log\frac{1}{E}$。

英文摘要:

The asymptotic capacity at low input powers of an average-power limited or an average- and peak-power limited discrete-time Poisson channel is considered. For a Poisson channel whose dark current is zero or decays to zero linearly with its average input power $E$, capacity scales like $E\log\frac{1}{E}$ for small $E$. For a Poisson channel whose dark current is a nonzero constant, capacity scales, to within a constant, like $E\log\log\frac{1}{E}$ for small $E$.

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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