Traditional wireless and mobile network focuses on higher throughout, coverage and larger capacity. In future, energy efficiency is of vital importance for wireless networks due to a large number of connected and battery constrained mobile devices. In Long Term Evolution Advanced (LTE-Advanced), Carrier Aggregation (CA) is proposed to increase the transmission bandwidth and hence data […]
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LTE Downlink Performance in High Speed Trains
Long Term Evolution (LTE) is expected to substitute the Global System for Mobile Communications (GSM) as the radio access technology for railway communications. Recently, especial attention has been devoted to high-speed trains since this particular environment poses challenging problems in terms of performance simulation and measurement. In order to severely decrease the cost and complexity […]
Read moreBLE based Accessory-Smartphone communication (WBANs/WPANs), used for health-care, infotainment and many other applications, usually operate in dynamic environment (varying number of sensors, wireless conditions, etc.). These devices are typically configured in connection-oriented hub-and-spoke model with the Master controller. With an end-objective of optimizing the capacity of BLE (Bluetooth Low Energy) centric systems, we share analytical models, experimental […]
Read moreFor real-time image/video transmission in implant body area networks, we have developed an in-bodytransceiver at around 30 MHz. The transceiver employs impulse radio (IR) technology with multi-pulse position modulation (MPPM) scheme. The transmit antenna was realized in a dimension of 1 × 2 cm by forming the radiation elements on a flexible magnetic sheet. Experimental results in a […]
Read moreWe consider the problem of network coding across three unicast sessions over a directed acyclic graph, where the sender and receiver of each unicast session are both connected to the network via a single edge of unit capacity. We consider a network model in which the middle of the network can only perform random linear […]
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Gene Regulation Network Modeling via Improved Multi-agent System and Dynamic Bayesian Network
Gene regulation network is playing a more and more important role in system biology, bioinformatics and pharmacology in the era of post-genomic. This paper presents a high efficient and accurate method to model gene regulation network. In the method, we first use an improved Multi-Agent System (Im-MAS) to fuse multiple data sources to generate an […]
Read moreA wireless capsule endoscope (WCE) is a promising medical device for diagnosis of digestive organs, which takes pictures inside digestive organs, such as large and small intestines and transmits them through implant wireless communications. In a realistic WCE scenario, it is important to precisely estimate the WCE location. Generally, the superiority of TOA-based localization over RSSI-based localization has been […]
Read moreThe temporal variation of spatial correlation between on-body radio links is empirically characterized for different walking scenarios. Nonstationary behaviors are highlighted, and a model is proposed for the long-term fading correlation.
Read moreIn this paper a novel method for synchronization and cell search in 3GPP LTE downlink (DL) system has been proposed. This method performs the symbol timing and physical-layer cell identity estimation in frequency domain with less complexity, utilizing the frequency domain properties of the primary and secondary synchronization signals. The primary synchronization signals have good orthogonal and […]
Read moreA simple planar monopole antenna structure is presented in this paper. The proposed antenna gives desirable performance in two band of frequencies ranging from 1.70-2.16 GHz and 3.7-3.9 GHz covering thirteen full LTE bands Bl, B2, B3, B4, B9, BIO, B25, B33, B34, B35, B36, B37, B39 and oneLTE band-B43 partially. The parametric study is incorporated to obtain […]
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