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wireless multiple access protocol in mobile computing

báo cáo hóa học:

báo cáo hóa học:" Multiple access communications in future-generation wireless networks" potx

Hóa học - Dầu khí

... “Polarization Division Multiple Access With Polarization Modulation for LOS Wireless Communications” by Bin Cao, Qin-Yu Zhang, and Lin Jin discusses a potential multiple access and modulation ... fair and efficient wireless access in challenging interference scenarios, for example, multiple networks deployed in the same geographical area and sharing a common band. In 1976, an ALOHA ... algorithm increases only linearly with the number of users. In this algorithm, the different CFOs from different users destroy the orthogonality among training sequences and introduce multiple access...
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Multiple Access Protocols for Mobile Communications - GPRS, UMTS and Beyond

Multiple Access Protocols for Mobile Communications - GPRS, UMTS and Beyond

Điện - Điện tử - Viễn thông

... extremelylarge in the case of unconstrained channel access, resulting in a low inherent statisticalmultiplexing gain. By combining CDMA with PRMA, it is possible to control the access of users ... (Ploss)max in multiples of σKd Hamming distancedilInterleaving depthdminMinimum Hamming distancee Error correcting capability of an (L, B, e) block code; also 2.718 282fCAFChannel access ... frequency channels) in GSMMAI Multiple Access InterferenceMAIO Mobile Allocation Index Offset (for frequency hopping in GSM)MBS Mobile Broadband SystemMCS-1 Modulation and Coding Scheme 1 (for...
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Locating objects in mobile computings

Locating objects in mobile computings

Vật lý

... 3)source sink
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article Controlled Delegation Protocol in Mobile RFID Netwo" doc

Hóa học - Dầu khí

... Conclusion is drawn in Section 4.2. Delegation Protocol with Limits onReading TimesWhenamobilereaderisinanoff-line access situation, wetry to limit its reading times. Hence, we propose a protocol that ... occasion.Hence, a mobile reader has been developed in recentyears to combine mobile technology with traditional RFIDsystems, through the integration of reading chips, PDA, and mobile devices, hence mobile ... medium, provided the original work is properly cited.To achieve off-line delegation for mobile readers, we propose a delegation protocol for mobile RFID allowing its readers access to specific tags...
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article Partial Interference and Its Performance Impact on Wireless Multiple Access Networks" potx

Hóa học - Dầu khí

... 3.00.20.40.600.20.40.600.20.40.6Loadingonlink1Loadingonlink 2Loading on link 3(a) F1, boundary of stability region with link 1 in nitely backlogged00.20.40.600.20.40.600.20.40.6Loading on link1Loading ... link 2Loading on link 3(b) F2, boundary of stability region with link 2 in nitely backlogged00.20.40.600.20.40.600.20.40.6Loading on link 1Loading onlink2Loading on link ... 1Loading on link 1Loading on link 2Partial interferenceBinary interferenceStability region of slotted ALOHA(a) p1= p2= 0.200.20.40.60.810 0.2 0.4 0.6 0.8 1Loading on link 1Loading...
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Báo cáo sinh học:

Báo cáo sinh học: " Decentralized estimation over orthogonal multiple- access fading channels in wireless sensor networks-- optimal and suboptimal estimators" pot

Điện - Điện tử

... discussed, inserting training symbols is a heuristic way to improve the performance. It is shown in the25Decentralized estimation over orthogonal multiple- access fading channels in wireless ... communication SNR levels. Itis interesting to see that using more training symbols does not improve the performance of the MLE asexpected, because inserting training symbols will reduce the energy ... ts in [19], in di catethat the separate source-channel coding scheme is optimal in fading channels with orthogonal multiple- access protocols, which outperforms AF transmission, a simple joint...
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báo cáo hóa học:

báo cáo hóa học:" Decentralized estimation over orthogonal multiple- access fading channels in wireless sensor networks-- optimal and suboptimal estimators" ppt

Hóa học - Dầu khí

... communication SNR levels. Itis interesting to see that using more training symbols does not improve the performance of the MLE asexpected, because inserting training symbols will reduce the energy ... first inequality in (76) and t he second inequality in (77) are satisfied. From the conditionf(θ)(θ − Φ) < 0, it is not hard to find that the second inequality in (76) and the first inequality in ... Furthermore, since the estimation quality of the first stage is available, we use BLUE to obtainˆθ for exploiting the quality information instead of using the MLE in the M-step as in the standard...
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Advances in mobile radio access networks artech house publishers jun 2005 ebook ling

Advances in mobile radio access networks artech house publishers jun 2005 ebook ling

Kĩ thuật Viễn thông

... 1-58053-727-810 9 8 7 6 5 4 3 2 1TEAM LinG30 Advances in Mobile Radio Access Networks increase the efficiency of power amplifiers while maintaining linearity. Since the efficiency of the state-of-the-art ... Figure 2.6 PA Consulting’s software radio-based WCDMA base station. TEAM LinGAdvances in Mobile Radio Access NetworksTEAM LinGTEAM LinG62 Advances in Mobile Radio Access Networks ... UE-based solution maintains a fully functional GPS receiver in the terminal. This requires the same functionality as described in terminal-assisted GPS, plus additional means for computing the position...
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Báo cáo toán học:

Báo cáo toán học: " Localization in mobile wireless and sensor networks" pot

Toán học

... I A L Open Access Localization in mobile wireless and sensornetworksMonica Nicoli1*, Sinan Gezici2, Zafer Sahinoglu3and Henk Wymeersch4Accurate localization or tracking of wireless de ... a very large database of RSS fingerprints.Machine learning techniques are employed to extractthe location information from online RSS measurementsshowing promising performance for room-level ... errors, indoorpositioning, and localization in wireless sensor networks(WSNs).The first group of articles deals with the interaction ofpositioning and communications at different layers ofthe protocol...
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Báo cáo hóa học:

Báo cáo hóa học: " Research Article An Energy-Efficient MAC Protocol in Wireless Sensor Networks: A Game Theoretic Approach" pptx

Hóa học - Dầu khí

... incomplete cooperative game theory in wireless networks. In [9, 10], authors used the concept ofincomplete cooperative game theory in wireless networks forfirst time and proposed the G-MAC protocol ... self-organizing and distributed networks as there are nocentral nodes to assign channel access in sensor nodes. In sensor networks, each node has a direct in uenceon its neighboring nodes while accessing ... all these information arenot necessarily available in incomplete information game[13].2.1. Incomplete Cooperative Game. As we mentioned earlier,energy efficiency of MAC protocol in WSN is very...
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Báo cáo y học:

Báo cáo y học: " Non-syndromic multiple supernumerary teeth in a family unit with a normal karyotype: case report"

Y học thưởng thức

... Corresponding author: Prof. Francesco INCHINGOLO, Piazza Giulio Cesare – Policlinico 70124 – Bari. E-mail: f.inchingolo@tin.it; f.inchingolo@doc.uniba.it. Tel.: 00390805593343 – Infoline: 00393312111104. ... © Ivyspring International Publisher. All rights reserved Case Report Non-syndromic multiple supernumerary teeth in a family unit with a normal karyotype: case report Francesco Inchingolo1, ... found in the supe-rior maxillary bone and mainly in the premaxilla (90-98%) 7, they are often impacted (88,7%) and are often present in the palatine area8,9. The prevalence of multiple...
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Efficient core selection for multicast routing in mobile ad hoc networks

Efficient core selection for multicast routing in mobile ad hoc networks

Công nghệ thông tin

... software and information distribution. Initially, almost all of these applications were being used in intranets or in MBONE, and now, there are some Internet service providers providing supports ... number of nodes in the multicast tree can continue to change and multicast tree need to adapt to the movement node (including or excluding of certain forwarding nodes of the tree). In order to ... mechanisms which are used for the handling of sequence numbers in many link-state routing protocols such as OSPF or in the building a spanning tree algorithm. It is enough to ensure that nodes can...
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