Quantum key agreement (QKA) permits participants to constitute a shared on quantum channel, while no can independently determine the key. However, existing Measurement-device-independent (MDI) protocols cannot resist channel noise, and noise-resistant QKA side-channel attacks caused by equipment defects. In this paper, we design MDI-QKA protocol against collective-dephasing noise based GHZ stat...

Ultrawideband (UWB) wireless communication technology, which appeared 20 years ago, is becoming popular in various fields because the ability to measure precise distance between UWB devices beyond being re-examined. The currently commercialized technology high-rate pulse repetition frequency (HRP) uses high-speed pulses of several tens megahertz, and direction measurements are made by using cha...

Industry 4.0 relies heavily on wireless technologies. Energy efficiency and device cost have played a significant role in the initial design of such systems for industry automation. However, high reliability, throughput, low latency are also key certain sectors as manufacturing industry. In this sense, existing solutions industrial settings limited. Emerging technologies millimeter-wave (mmWave...

Compressed sensing is a new framework for acquiring sparse signals based on the revelation that a small number of linear projections (measurements) of the signal contain enough information for its reconstruction. The foundation of Compressed sensing is built on the availability of noise-free measurements. However, measurement noise is unavoidable in analog systems and must be accounted for. We ...

When Raman microscopy is adopted to detect the chemical and biological processes in the silicon microfluidic channel, the laser-induced heating effect will cause a temperature rise in the sample liquid. This undesired temperature rise will mislead the Raman measurement during the temperature-influencing processes. In this paper, computational fluid dynamics simulations were conducted to evaluat...

We present a model for time-varying communication single-access and multiple-access channels without feedback. We consider the difference between mutual information when the receiver knows the channel perfectly and mutual information when the receiver only has an estimate of the channel. We relate the variance of the channel measurement error at the receiver to upper and lower bounds for this d...

It is shown that many dynamic tests and measurement technologies base on a changing measurement equation and that internal and external disturbances may change the dynamic functional of the same object and that the reaction of measurement transducer (measurement channel) changes not only in dependence on type of loads. The reasons are given which cause methodical metering errors and make it dif...