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The emergence of 5G wireless communication calls for new paradigms to satisfy the individuation and diversification of users' demands. In this paper, we construct the multicast groups under the guidance of user interest and then allocate the subcarriers and power to these groups in orthogonal frequency division multiple (OFDM) networks. Specifically, in order to maximize the social utility related...
Distributed antenna systems (DASs) have been widely implemented in the state-of-the-art cellular communication systems to cover dead spots. Recent studies have also indicated that DAS has advantages in wireless energy transfer (WET). In this paper, we study simultaneous wireless information and power transfer for a multiple-input single-output DAS in the downlink, which consists of arbitrarily distributed...
Transmission in millimeter wave (mmW) band has a big potential to provide orders of higher wireless bandwidth. To combat the high channel loss in high frequency band, beamforming is generally taken to transmit along the direction that provides the maximum transmission gain. This requires the MAC protocol to facilitate the finding of the optimal beamforming direction. Exiting protocol suggests the...
Compressed sensing (CS) technique has attracted a lot of recent research interests in mathematics and signal processing fields. Literature studies often exploit CS at the receiver side to sub-sample the receiving signals to reduce the sampling rate and processing overhead. It would be of great benefit if it is possible to exploit CS at the transmitter side to reduce the redundancy of the data before...
Dynamic resource allocation (DRA) in MIMO-OFDMA systems supporting multiple services is studied. A low complexity linear algorithm based on solving an RA optimization problem subject to an additional proportional fairness constraint is developed. Computer simulation results demonstrate that the proposed algorithm performs well, and the proportionality of rate among the users approaches the proportional...
Ventricular fibrillation (VF) is a malignant arrhythmia, which belongs to complex and nonlinear signals. To realize the detection of ventricular fibrillation, a new algorithm, which was based on the improved threshold crossing interval (TCI) algorithm and Support vector machine (SVM), was proposed in this paper. The SWM has great advantages in processing classification and pattern recognition. In...
Aimed at the problem of unbalanced energy consumption of cluster heads caused by inter-cluster communications in wireless sensor networks clustering routing protocols, a novel algorithm named cluster head load balanced clustering (CHLBC) is presented. Based on uneven distributed cluster heads, CHLBC builds backbone network's inter-cluster transit route which is composed of cluster heads and calculates...
The design philosophy of UBot module is proposed in this paper. A novel modular self-reconfigurable robot called UBot is presented. The UBot module is compact, strength, flexible and capable of performing efficient locomotion, self-reconfiguration and manipulation tasks. This robot consists of several standard modules. Each module is cubic structure based on universal joint, and has four connecting...
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