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In driving safety systems for avoiding collision using vehicle to vehicle communication, it is important for each vehicle to know other vehicles' positions and speed data delivered by beacons periodically sent from the vehicles. Each vehicle has to frequently recognize the correct positions of nearby vehicles because the vehicles have a high risk of collision with them. Aiming to make vehicles to...
Outsourced computing is increasingly popular thanks to the effectiveness and convenience of cloud computing *-as-a-Service offerings. However, cloud nodes can potentially misbehave in order to save resources. As such, some guarantee over the correctness and availability of results is needed. Exploiting the redundancy of cloud nodes can be of help, even though smart cheating strategies render the detection...
A new OTA based structure of M-ary modulator & demodulator have been proposed in this paper. Unlike conventional system, A/D D/A converters are not used in the proposed circuit. M-ary ASK modulator and demodulator are synthesized in a systematic and hierarchical manner. As a result, modulation and demodulation with different symbol size, M=2n where n=1 2, 3, 4 can be performed in this proposed...
A MapReduce cluster is usually shared by multiple users or products, aiming at accelerating their own job. In contrast, the utilization of the cluster is the main concern for the system itself. MapReduce jobs are split into independent tasks during execution. However, in practice, the number of tasks per stage for each job and the system settings are often sub-optimal to support certain workload....
Smart cameras allow pre-processing of video data on the camera instead of sending it to a remote server for further analysis. Having a network of smart cameras allows various vision tasks to be processed in a distributed fashion. While cameras may have different tasks, we concentrate on distributed tracking in smart camera networks. This application introduces various highly interesting problems....
Distributed autonomic management systems following contradictory objectives raise difficult design challenges. We proposed a generic architecture to address this concern and exemplified it via manager integration solutions for multi-objective micro-grids (low-tension networks of the size of a district). This demo showcases some of these sample implementations via the MisTiGriD simulation platform...
Device-to-Device (D2D) communications underlying cellular networks have been regarded as a promising way to satisfy the growing requirement for data traffic. However, the D2D pairs may bring significant interference to cellular networks when they share the channel with the cellular user equipments (UEs). In this paper, we consider the scenario in which the D2D pairs share the uplink channel with the...
The concept of cognitive radio (CR) is proposed to deal with the problem that the spectrum resource is almost used up but some licensed bands are under very low utilization at the same time. In CR networks, secondary users (SUs) are allowed to utilize the licensed spectrum bands by paying to the primary users (PUs) with the spectrum licenses. Besides, with the rapid development of wireless communications...
The performance of digital subscriber lines (DSL) systems is closely related to crosstalk. This paper presents a novel distributed spectrum management algorithm named weighted power bit-loading (WPBL). Instead of selecting the tone that will require the minimum incremental power to load a bit [1], WPBL selects the tone that requires the minimum weighted summation of the incremental power and reference...
Device-to-Device (D2D) communication underlying cellular networks and reusing cellular resources enhances the network capacity and spectrum efficiency, but causes severe interference which can degrade the system performance. In this paper, we concentrate on managing the downlink interference from D2D communication to cellular networks when sharing channel resources. First of all, a strategy based...
Reliable co-channel bidirectional transmission in wireless networks is moving towards reality by employing the emerging full-duplex (FD) technology. Enhanced by FD-capable nodes, a future wireless network can be made up merely with pairs of bidirectional communicating nodes where each pair occupies a block of orthogonal resource to avoid interference, referred to as pure-FD system. In this paper,...
A research work is performed to analyze the automatic detection performance in a surveillance area by more than three sensors to detect the unknown non-active fixed or moving target or targets. In order to solve the detection ambiguity for the multiple target case caused by the deterministic and the stochastic reason, a self-defined evaluation parameter and several variables are defined and modeled...
Location-based services are one of the demanding applications on mobile devices that account for significant battery usage. In this paper, we evaluate the potential average savings over using approaches such as GPS for localization that can be achieved by (i) using local low-energy mobile node cooperation and/or (ii) additional local infrastructure (fixed) beacon nodes that broadcast their position...
Device-to-device (D2D) discovery is an important step toward numerous applications of device-to-device communications. However, the design of D2D discovery protocols also faces the challenges of distributed nature, energy efficiency, scalability, and fast discovery. In this paper, we propose a D2D discovery protocol called synced distributed protocol that can efficiently resolve these challenges....
For the Steer-by-Wire system, it is necessary to develop advanced control systems and to design advanced architectures. In this paper, a new SBW control system with the consideration of the variable gear-ratio is presented. This SBW system includes two control loops, which are called upper control loop and lower control loop, respectively, to achieve bilateral control. The force feedback motor, which...
In this work, we deal with the conditions of when the network percolates. Unlike the previous work, where establishing connections are limited to only four adjacent sub-squares (the left, right, upper and lower sub-squares), we allow the transmission connection can be established with all eight adjacent sub-squares of the sub-square of interest. To prove the condition of percolation, we find the lower...
In this paper, the fault detection problem of feedback control systems with Signal-to-Noise Ratio (SNR) constrained channels is studied. A residual generation based on system model is designed to guarantee the best trade-off between sensitivity to fault and robustness to system disturbance as well as channel noise. A norm-based residual evaluation function is used and an on-line dynamic threshold...
Heterogeneous Networks (HetNet) consisting of Macrocells deployment and overlaying Picos provide an attractive way to improving the Macrocell capacity and coverage. However, the inter-tier interference from Macrocell to Pico in such two-tiers system can significantly reduce the coverage of Pico and cause the system capacity loss. So, the Cell Range Expansion (CRE) for Pico with Almost Blank Subframe...
In this paper, a partially decoding scheme, combined with the rate compatible Raptor-like low-density parity-check (LDPC) codes, is proposed to provide more robust, power saving solutions for the future terrestrial broadcasting systems. Different from the existing works, the proposed algorithm uses the least information in the codeword and stops immediately after the decoding is successful. We illustrate...
In the last few years, mobile broadband communications operators have been confronted to an exponential growth of the traffic over their networks. Recently, the use of a broadcast component as a solution to face this growth has received a particular attention. In [1], a model for a hybrid network is introduced. This network consists in the inter-operation of a LTE unicast component and a DVB-T2 broadcast...
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