What are Coherence Length and Coherence Time? | 愛學習

In communications systems, a communication channel may change with time. Coherence time is the time duration over which the channel impulse response is ...

The coherence time is a measure of temporal coherence, expressed as the time over which the field correlation decays.

2023年8月31日 — Coherence length is a measure of the distance over which a wave maintains a consistent phase relationship. In other words, it is the distance ...

2021年12月19日 — Coherence time (τ) is a measure of the correlation between phases of a wave at two different instances of time. It essentially tells you if ...

2022年9月16日 — The coherence time Δτc is defined as the maximum time interval over which the phase of the electric field can be predicted. In the case of ...

由 D Bykhovsky 著作 · 2020 · 被引用 8 次 — The coherence time is the time over which the channel-gain-values correlation coefficient drops below a predefined threshold.

A channel is said to exhibit frequency non-selective or flat fading if τ m < τ s . In this case, all multipath components of a symbol arrive at the receiver ...

由 L Zhao 著作 · 2014 · 被引用 73 次 — In this Letter, we report the generation of narrowband photon pairs with a coherence time up to 1.72 μs, using Rb85 cold atoms in our recently developed dark- ...