The role of the interleaver in a Bit Interleaved Coded Modulation (BICM) system is investigated. Square block interleavers and convolutional interleavers are compared to the random interleaver originally used by Zehavi [1]. It is shown that for short latencies (20 ms) the square block interleaver performs better than the random interleaver. However, when the side of the square block interleaver...

Implementing a control system over a communication network induces inevitable time delays and packet dropout that degrade performance and can even cause instability. In this paper, adjustable deadbands are explored as a solution to reduce network traffic in networked control system and we presented a new modeling method for nonlinear networked control system with random time delays and communic...

This paper addresses the problem of capacity provisioning in a QoS enabled IP network, subject to satisfying varying performance requirements for different traffic classes. These performance requirements are viewed in terms of mean end-to-end delays required for the various traffic classes or in terms of random variations of their delays (i.e., jitter) or a combination of both. The accuracy of ...

In Wireless Networked Control Systems (WNCS), time-varying and unknown delays can significantly degrade the closed-loop performance and even lead to instability. This paper proposes using Dynamic Matrix Control for WNCS, where, a set of predicted control signals corresponding to possible delays are sent to the plant. Here the most appropriate control signal is selected based on the round-trip d...

This paper investigates self-organizing binary majority consensus disturbed by 1 faulty nodes with random and persistent failure. We study consensus in ordered and random 2 networks with noise, message loss, and delays. Using computer simulations, we show that: 3 (a) explicit randomization by noise, message loss, and topology can increase robustness 4 towards faulty nodes, (b) commonly-used fau...

Abstract: The paper considers the design of networked control systems with random network transmission delay and addresses their closed-loop stability. A novel control strategy is proposed to deal with the random network delay, which is termed as networked predictive control. The key parts of the networked predictive control are the control prediction generator that provides a set of future con...

Realistic networks display heterogeneous transmission delays. We analyze here the limits of large stochastic multi-populations networks with stochastic coupling and random interconnection delays. We show that depending on the nature of the delays distributions, a quenched or averaged propagation of chaos takes place in these networks, and that the network equations converge towards a delayed Mc...

This study explores a hybrid stochastic delay Gompertz model under regime switching. It is proved that the has unique global positive solution. Suficient conditions for persistence in mean and extinction are obtained. The results show random perturbations time delays could effect of model.