Multi-node Transmission Research Articles

Sliding mode control based on multi-node transmission hybrid scheduling for Markovian jump systems with constrained bandwidth

The sliding mode control (SMC) problem is investigated for Markovian jump systems (MJSs) under constrained communication bandwidth. A multi-node hybrid transmission strategy composed of an event-triggered protocol and the weight try-once-discard (WTOD) protocol is introduced into the sensor-to-controller (S/C) channel. Its key feature is that by using two dynamic thresholds, the number of the transmitted components may be dynamically regulated, not just the one with the largest difference as in the conventional WTOD protocol. That may greatly increase the flexibility of transmission under limited bandwidth, meanwhile, it is also beneficial to balance system performance and network burden. Then, a compensating strategy is proposed via the previous transmitted signals, and a scheduling signal-dependent sliding mode controller is designed. By using mode-dependent Lyapunov function, both the stochastic stability and the reachability are analyzed under different transmission cases, respectively. Moreover, an optimization problem on convergent domain is formulated and the binary-encoded genetic algorithm (GA) is utilized to search a desirable sliding gain. Finally, the proposed multi-node hybrid scheduling-based SMC scheme is illustrated via simulation results.

OFDM Based Multi-Node Transmission in the Presence of Phase Noises for Small Cell Backhaul

In this letter, the phase noise (PN) effect on orthogonal frequency division multiplexing based multi-node transmission for small cell backhaul is studied. Since each transmitter is equipped with an independent oscillator, the received signals are corrupted by all of these independent PNs (plus the PN at the receiver), which renders the conventional PN compensation schemes at the receiver ineffective. In this letter, a PN compensation scheme for multi-node transmission is proposed, which can effectively mitigate the effect of the multiple PNs.

Multi-Node Cooperative Transmission over Content Centric Networking

In this paper, we present our implementation and evaluation of multi-node transmission over Content Centric Networking, which is realized by CCNx project. As there are no client-server connections in CCN, it offers the possibility to transfer data from multiple nodes as well as multiple links in parallel. However, in the current strategy of CCNx, even if there are many nodes who store the video files the client needs, the CCNx may choose one node to transfer the resource at one point, resulting the waste of other links .Thus we try to split video files into fragments. Multi-nodes will cooperate together to transfer the fragments As there are more than one nodes transferring the different fragments at the same time, each link can be made fully used and the transfer performance can be improved in some ways.