The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The emergency of compressed sensing breaks the bottleneck of traditional Nyquist theory and results in various sub-Nyquist sampling architectures. As a representative, the random pulse-position-modulation analog-to-digital converter (PPM ADC) combines compressed sensing techniques with time-domain signal processing to effectively leverage the power efficiency. For this frame, period random sampling...
Wireless network virtualization has attracted great attentions from both academia and industry. Another emerging technology for next generation wireless networks is in-band full duplex (FD) communications. Due to its promising performance, FD communication has been considered as an effective way to achieve self- backhauls for small cells. In this paper, we introduce wireless virtualization into small...
A systematic numerical algorithm is proposed for the planning and optimization of wireless communication network in urban rail transportation. The algorithm is based on a few statistical wireless channel parameters which are relatively easy to obtain. In this method, the performance of the wireless communication network can be dynamically evaluated via simulation while adjusting base stations' positions...
In conventional multicast scheme (CMS), the total throughput of multicast group is constrained by the user with the worst channel quality. In order to overcome this problem of limited throughput, we consider a resource allocation algorithm based on layered coding, when a limited feedback scheme is considered. A novel subcarrier and power algorithm is exploited for targeting the maximum throughput...
This article mainly from the start of the radio signal propagation characteristics, and connecting with the reality, according to the actual situation of some aera, the three typical environment of the topography for signal channel test and modeling is choosen. Through to the research of the zone VHF/UHF band, and a positive approach of the channel test and modeling are got.
In this demonstration, distributed consensus building is used to improve the performance of RSSI based trilateration algorithms. Specifically, the objective of the consensus is to determine the spatial centroid for a distribution of sensor nodes in a wireless sensor network (WSN). Incorporating a consensus aspect reduces the sensitivity of the objective to dropped packets, changing topologies, and...
In this article using ZigBee technology constructed the wireless sensor network (WSN) pressure monitoring system based on the CC2430 and NPI-15C-353AH pressure sensor, it also designed the wireless communication module and the data acquisition module of WSN nodes, as a result, it achieved a monitoring purpose which had low cost, low power consumption, high reliability and made system configuration...
Wireless sensor network is one of the top research topic in the embedded system right now. It design one kind of wireless sensor node, which use 8 bits MCU Atmega128 as control core and low consumption wireless communication module CC1100. Then it formulate communication protocol of wireless data transmission, constitute a communicate system of wireless network, also make some tests on data multihop...
Unequal error protection applies different forward error correction to different parts of video stream according to their different importance. Traditionally, the expected decoder distortion is used to evaluate the importance of each part in the bitstream. However, it considers only the source coding distortion and the channel distortion propagated from the previous frames. In this paper, a new unequal...
An interference free cluster-based TDMA protocol (IFCT) for wireless sensor networks was proposed in previous study. IFCT uses a distributed frame assignment algorithm (FA) to assign different frames for neighboring clusters. In this paper, we propose a interference-free data aggregation protocol (IFDA) for clustered based TDMA wireless sensor networks based on IFCT. IFDA alters the FA algorithm of...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.