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With the development of MEMS (Micro-electromechanical Systems), the wireless sensor networks (WSNs) have become an important communicating method for intelligent transportation application. Mathematics modeling, as an effective quantitative analysis method, is very important for conducting intelligent transportation performance research when WSNs are applied. Based on the channel contention mechanism...
Atomic multicast is a group communication primitive that allows disseminating messages to multiple distributed processes with strong ordering properties. As such, atomic multicast is a widely-employed tool to build large-scale systems, in particular when data is geo-distributed and/or replicated across multiple locations. However, all the most efficient atomic multicast algorithms suffer from a convoy...
In this paper a structure for direct 4-BIT XOR/XNOR logic cell is proposed. This structure is proposed using pass transistor logic with FinFETs. This structure has less delay for the reason that its critical path consists of a minimum number of transistors. The basic advantage of this circuit is their symmetry in the logic. This design has a full voltage swing at the outputs and hence it has the good...
Following the explosion of Internet-enabled mobile devices and mobile services, users tend to expect network connectivity everywhere they go and at any time. In anticipation of these higher connectivity expectations and requirements especially for vehicular communication, several technologies like WiMAX, cellular networks (i.e., 3G/4G) and wireless mesh networks have been developed. While cellular...
One main challenge in network virtualization is known as virtual network embedding(VNE). VNE is NP-hard and most algorithms in the literature are heuristic. This paper presents an exact algorithm based on the Integer Linear Programming(ILP). The exact algorithm aims to simultaneously minimize the cost of substrate network and average virtual link delay of mapped VNRs. Simulation results reveal that...
A massive number of the fifth generation (5G) terminals in the network brings challenges to contention-based random access, especially for machine-type communications (MTC). Based on the extreme traffic model defined by 3rd Generation Partnership Project (3GPP), available solutions, cannot support all the MTC devices access the network successfully. To solve the problem, we firstly analyze the objective...
The distribution system voltage volatility caused by changing load conditions and penetration of renewable resources presents an increasing challenge in the grid integration of renewables. This paper presents a novel voltage regulator, or field upgradeable transformer (FUT), for the distribution system, targeting at direct voltage regulation at the customer side with a fast dynamic response. Proposed...
Delay Tolerant Network (DTN) is a wireless network that connected in an intermittently manner and have dynamic topology. In DTN to design protocol routing is a big challenge due to there is no end-to-end path. To overcome this challenge there is protocol routing dLife. dLife is a protocol routing in DTN that use two utility function to determine forwarding decision, namely TECD (Time-Evolving Contact...
We propose a vertex-centric distributed resource orchestration algorithm for finding all feasible mappings of a service function chain in multi-domain networks. Simulation results show superior efficiency and scalability for computing large service function chain requests.
The Power Amplifier (PA) is a Radio Frequency (RF) circuit and its main goal is to drive the transmitter's (Tx) antenna. It faces a trade-off between spectral efficiency and power saving. Digital Cartesian Feedback (CFB) presents itself as a good linearization system when using narrowband signals in portable or mobile devices. This work starts with the validation of a digital CFB linearization system...
To cope with data collision problem in consensus synchronization algorithm caused by utilizing pseudo-periodic broadcast method, this paper presents a novel gossip averaging based clock synchronization protocol, which combines the a synchronism of rumor communication and the robustness of neighbor averaging. We design a randomized link-activated based relative skew estimation strategy, which realizes...
Since input shaping control is based on open-loop control technique, robustness to modeling error is crucial for successful application of it. The robustness of input shaping control has conventionally been evaluated from the ratio of residual vibration amplitude with input shaping to that without input shaping. However there has been no serious consideration on robustness measures of input shaping...
Digital Signal Processors are special type of microprocessors with its architecture optimized for signal processing applications. Hardware acceleration has been proved as an extremely promising implementation strategy for the digital signal processing (DSP) and multimedia application domain. An accelerator module can be attached to processor core for enhancing performance. It enhances the performance...
In this work an analysis of a distributed algorithm for the optimization of signal setting on urban network is proposed. The Traffic Signal Synchronization is a traffic engineering technique of matching the green light times for a series of intersections to enable the maximum number of vehicles to pass through, thereby reducing stops and delays experienced by motorists. Synchronizing Traffic Signals...
Adders are one of most essential components of the digital circuits that are designed for different DSP applications. The important aspects considered for designing any digital circuit design are delay, power and Power Delay Product (PDP). In this paper, 32 bit carry bypass adders (CBA) which have superior performance with respect to these parameters are presented. The CBA's are implemented using...
In this work a distributed algorithm for the optimization of signal setting on urban network is proposed. The Traffic Signal Synchronization is a traffic engineering technique of matching the green light times for a series of intersections to enable the maximum number of vehicles to pass through, thereby reducing stops and delays experienced by motorists. Synchronizing Traffic Signals ensures a better...
In this work an algorithm for the optimization of signal setting on urban network is proposed. Signal setting are designed based on a given flow in the network. However, the flow in the network is also influenced by the route choice decisions. This paper deals with traffic signal setting with demand assignment. All approaches proposed in literature to address this problem are based on equilibrium...
In this paper, we evaluate and compare the performance of single-copy and multiple-copy routing protocols in a realistic Vehicular Delay Tolerant Network (VDTN) scenario. The simulations are conducted with the Opportunistic Network Environment (ONE) simulator. The performance is analyzed using delivery probability, overhead ratio, average latency, average number of hops and average buffer time metrics...
A noise immunity improvement for hybrid position observers for brushless dc motor drives is proposed. A finite state machine is used to detect Hall-effect sensor transitions to determine if these transitions are true transitions or the result of momentary glitches. This filter causes a delay in the detection of the Hall-effect sensors that is compensated in the proposed observer. The proposed observer...
It is well-known that the spurious fast retransmission and timeout widely exist in the course of vertical handover when a mobile node (MN) moves from a longer transmission delay network into a shorter one. Some solutions for the problems have been discussed in a lot of literatures for non-Cognitive Radio (non-CR) scenarios. One of them, bicasting is the main method to improve the transmission performance...
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