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arXiv 1202.6423cs.ITcs.NImath.IT
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AWGN信道低检测概率可靠通信的极限

Limits of Reliable Communication with Low Probability of Detection on AWGN Channels

Boulat A. Bash, Dennis Goeckel, Don Towsley

摘要:

我们对加性高斯白噪声(AWGN)信道上可靠传输且检测概率(LPD)低的信息量提出了平方根限制。具体地说,如果发射机具有到预期接收机和管理员的AWGN信道,两者都具有非零噪声功率,我们证明了$o(\sqrt{n})$比特可以在$n$信道使用中从发射机发送到接收机,同时对任何$ε>0$的下限$α+β\geq1-ε$,其中,$α$和$β$分别表示当发送方不发送时的错误警报的管理员概率和当发送方发送时的错过检测的管理员概率。发送者正在发送。此外,在大多数实际场景中,发射机和管理员之间的信道上的噪声功率的下限是已知的,并且可以在$n$ LPD信道使用中发送$O(\sqrt{n})$比特。相反地,尝试发送多于$O(\sqrt{n})$比特导致由管理员以概率1或非零概率在接收机处解码错误检测为$n\rightarrow\infty$。

英文摘要:

We present a square root limit on the amount of information transmitted reliably and with low probability of detection (LPD) over additive white Gaussian noise (AWGN) channels. Specifically, if the transmitter has AWGN channels to an intended receiver and a warden, both with non-zero noise power, we prove that $o(\sqrt{n})$ bits can be sent from the transmitter to the receiver in $n$ channel uses while lower-bounding $α+β\geq1-ε$ for any $ε>0$, where $α$ and $β$ respectively denote the warden's probabilities of a false alarm when the sender is not transmitting and a missed detection when the sender is transmitting. Moreover, in most practical scenarios, a lower bound on the noise power on the channel between the transmitter and the warden is known and $O(\sqrt{n})$ bits can be sent in $n$ LPD channel uses. Conversely, attempting to transmit more than $O(\sqrt{n})$ bits either results in detection by the warden with probability one or a non-zero probability of decoding error at the receiver as $n\rightarrow\infty$.

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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