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首页> 外文期刊>Wireless Communications Letters, IEEE >Average Contiguous Duration—A Novel Metric for Characterizing Wireless Fading Channels
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Average Contiguous Duration—A Novel Metric for Characterizing Wireless Fading Channels

机译：平均连续持续时间 - 用于表征无线衰落通道的新型度量

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摘要

We define the average contiguous duration (ACD) of the received fading signal as the average time duration during which the signal envelope contiguously remains within a bounded amplitude interval. Also, the multi-interval ACD or L-ACD function is defined as the set of ACD values for L non-overlapping amplitude-intervals whose union spans the received envelope's amplitude range. We derive closed-form expressions of the ACD for Rayleigh, Rice, and Nakagami-m fading signals, which are widely analyzed in the literature. The derived expressions hold practical significance for several signal processing applications such as non-uniform quantization of channel samples for secret key generation (SKG) in physical layer security (PLS) techniques. The well-known channel fading metric of average fade duration (AFD) is shown as a special case of the proposed ACD metric and the proposed theoretical analysis is validated by simulations.
机译：我们将接收的衰落信号的平均连续持续时间（ACD）定义为平均持续时间，在其中信号包络连续地保持在有界幅度间隔内。 此外，多间隔ACD或L-ACD函数定义为L非重叠幅度间隔的ACD值集，其工会跨越所接收的包络的幅度范围。 我们派生在瑞利，大米和Nakagami-M褪色信号的ACD的闭合表达，这些信号在文献中被广泛分析。 衍生的表达对几种信号处理应用具有实际意义，例如用于物理层安全（PLS）技术中的秘密密钥生成（SKG）的信道样本的非均匀量化。 平均衰落持续时间（AFD）的众所周知的通道衰落度量被示为所提出的ACD度量的特殊情况，并且通过模拟验证了所提出的理论分析。

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