hsdpahsupa for umts high speed radio access for mobile communications
hsdpahsupa for umts high speed radio access for mobile communications
... America.WCDMA radio access has evolved strongly alongside high- speed downlink packet access (HSDPA) and high- speed uplink packet access (HSUPA), together called high- speed packet access (HSPA). ... High- Speed Downlink Packet Access HSPA High- Speed Packet Access HSUPA High- Speed Uplink Packet Access Abbreviations xviiHigher cell capacity and higher spectral efficiency are required to provide higher ... High- Speed Dedicated Physical Control CHannelHS-DSCH High- Speed Downlink Shared CHannelHS-PDSCH High- Speed Physical Downlink Shared CHannelHS-SCCH High- Speed Shared Control CHannelHSDPA High- Speed...
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wcdma for umts radio access for third generation mobile communications
... WCDMA FOR UMTS Radio Access for Third Generation Mobile Communications Third EditionEdited byHarri Holma and Antti ToskalaBoth ... depicts packet access and presents the performance of packetprotocols of WCDMA. Chapter 11 presents the significant Release 5 feature, High- Speed Downlink Packet Access, HSDPA, and its perform ance. ... all-IP10 WCDMA for UMTS guidelines for radio network dimensioning, gives an example of detailed capacity andcoverage planning, and covers GSM co-planning. Chapter 9 covers the radio resourcemanagement...
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Báo cáo hóa học: " Research Article Pulse Interval Modulation for Ultra-High Speed IR-UWB Communications Systems" pdf
... “Orthonormalpulses for high data rate communications in indoor UWBsystems,” IEEE Communications Letters, vol. 9, no. 5, pp. 405–407, 2005.[4]J.A.N.daSilvaandM.L.R.deCampos,“Methodforobtaining ... modern communication systems place high demands on low power consumption, high- speed trans-mission, and anti-interference characteristics. Therefore,impulse radio ultra-wideband (IR-UWB) [1]systemshaverecently ... and A. S. Madhukumar, “Combining OOK withPSM modulation for TH-UWB radio systems: a performanceanalysis,” EURASIP Journal on Wireless Communications andNetworking, vol. 2008, 2008.[9] C. J....
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Báo cáo hóa học: " Research Article Development of Long-Range and High-Speed Wireless LAN for the Transmission of Telemedicine from Disaster Areas" pdf
... rate for video signal. CBR and VBR stand for constant bit rate andvariable bit rate, respectively. SIF stands for source inputformat. HalfD1 stands for video size of 352× 480 pixels for one ... to be used for telemedicine [9], and there maybe more.Beside applications of satellite communications in dis-asters, use of WiFi and Worldwide Interoperability for Mi-crowave Access (WiMAX) ... assumed that WiMAX can provide broad-band wireless access (BWA) up to 50 km between fixed sta-tions and 5–15 km for mobile stations. And it can provide high- transmission rates of up to 70 Mbps [12,...
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Báo cáo hóa học: " Research Article Interference Robust Transmission for the Downlink of an OFDM-Based Mobile Communications System" docx
... zero-forcing reception, particularly for high SNRs.4.2. Closed-form BEP calculation for ZF-SAICusing M-ary ASK for transmission overRayleigh fading channelsIn the following, we derive closed form ... case.However, also for this modulation and coding scenario an in-crease in DIR boosts the performance of our approach. For aDIR of at least 5 dB the conventional scheme is outperformed for high Eb/N0by ... planning. Therefore, system capacity is limited by interference, which is particularly crucial for mobile ter-minals with a single receive antenna. Nevertheless, next generation mobile communications...
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Multiple Access Protocols for Mobile Communications - GPRS, UMTS and Beyond
... Datagram Protocol (for IP)UE User EquipmentUED Unequal Error DetectionUEP Unequal Error Protection UMTS Universal Mobile Telecommunications SystemUTRA UMTS Terrestrial Radio Access or Universal ... Multiple Access RAN Radio Access NetworkRAP Random Access ProtocolRCMA Reservation-Code Multiple Access RES Reservation StateRF Radio FrequencyRHS Right Hand Side (of an equation)RLC Radio ... detail.Multiple Access Protocols for Mobile Communications GPRS, UMTS and BeyondAlex BrandSwisscom Mobile, SwitzerlandHamid AghvamiKing’s College London, UKSYMBOLSA[t] Slots available for contention...
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Tài liệu Báo cáo khoa học: "A HARDWARE ALGORITHM FOR HIGH SPEED MORPHEME EXTRACTION AND ITS IMPLEMENTATION" pptx
... algorithm for high speed morpheme extraction, and also de- scribes its implementation on a specific machine. This machine, MEX.I, is designed as the first step 313 A HARDWARE ALGORITHM FOR HIGH ... be- lieve it is suitable for VLSI implementation. Ac- tually, its VLSI implementation is in progress. A high speed morpheme extraction VLSI will im- prove the performance of such text processing ... Step 2 for Procedure 1 are implemented in each state for (a), (b), (c), (d), (e), and so on. In state (a) for Fig. 4, the index memory's out- put expresses the address range for the...
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Báo cáo khoa học: "Randomized Algorithms and NLP: Using Locality Sensitive Hash Function for High Speed Noun Clustering" pdf
... created noun similarity list.AcknowledgementWe wish to thank USC Center for High PerformanceComputing and Communications (HPCC) for help-ing us use their cluster computers.ReferencesBanko, M. ... Association for Computational LinguisticsRandomized Algorithms and NLP: Using Locality Sensitive Hash Function for High Speed Noun ClusteringDeepak Ravichandran, Patrick Pantel, and Eduard HovyInformation ... Interestingly, cosine similarity iswidely used in NLP for various applications such asclustering.In this paper, we perform high speed similaritylist creation for nouns collected from a huge webcorpus....
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Lte For Umte Ofdma And Scfdma Based Radio Access pdf
... KeyingHRPD High Rate Packet DataHSDPA High Speed Downlink Packet Access HS-DSCH High Speed Downlink Shared ChannelHSGW HRPD Serving GatewayHSPA High Speed Packet Access HS-PDSCH High Speed Physical ... Discontinuous Transmission and Reception (DTX/DRX) 400LTE for UMTS – OFDMA and SC-FDMA Based Radio Access LTE for UMTS: OFDMA and SC-FDMA Based Radio Access Edited by Harri Holma and Antti Toskala© ... at architecture24LTE for UMTS – OFDMA and SC-FDMA Based Radio Access 1.9 LTE-AdvancedInternational Mobile Telecommunications-Advanced (IMT-Advanced) is a concept for mobile systems with capabilities...
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Báo cáo hóa học: "Research Article Design of an Omnidirectional Multibeam Transmitter for High-Speed Indoor Wireless Communications" doc
... of configuration E for light undergo-ing up to five reflections.power uniformity of the transmitter has yet to be optimized. For high performance wireless diffuse links with uniformpower illumination ... receivers for high- speed infraredwireless communication,” IEEE Communications Magazine,vol. 36, no. 12, pp. 88–94, 1998.[15] T. J. Svetla and M. Kavehrad, “Multispot diffusing config-uration for ... view aswell as the power receiving performance.A prototype multibeam transmitter suitable for produc-ing uniform, near hemisphere or 180 degree, high speed, and long distance infrared radiation...
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Báo cáo hóa học: " Research Article VLSI Implementation of a Fixed-Complexity Soft-Output MIMO Detector for High-Speed Wireless" pptx
... Hence, the former one isassumed to target high- end users willing to pay more inarea and power for performance (e.g., laptops). The MMSEsingle-mode detector is in favor of low-end users for connec-tivity ... low-complexity MIMO symbol detector with close-Maximum a posteriori performance for the emergingmultiantenna enhanced high- speed wireless communications. The VLSI implementation is based on a novel MIMO ... March 2007.[16] D. Wu, J. Eilert, and D. Liu, “Implementation of a high- speed MIMO soft-output symbol detector for software defined radio, ” Journal of Signal Processing Systems. In press.[17] C....
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Báo cáo hóa học: " Research Article Assessment of Network Layouts for CDMA Radio Access" pdf
... PERFORMANCE EVALUATION Radio network performance can be measured with multipleperformance indicators. These can be used to measurethe coverage, interference, and system performance. Theperformance ... effect of RFperformance to the final system performance.3.3. System simulations Mobile radio system performance is affected by random userlocations, mobility of users, fading on radio channel ... layoutprovides clearly the highest site area.5. CONCLUSIONS AND DISCUSSIONIn this paper, the performances of different tessellations wereevaluated for CDMA radio access scheme as a function...
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Báo cáo hóa học: " Submonolayer Quantum Dots for High Speed Surface Emitting Lasers" potx
... simultaneously to a significant lateralcompositional modulation and high QD density [34],resulting in a high material and modal gain. For ultrahigh -speed directly modulated VCSEL appli-cations it is extremely ... faster [4] large signal modulationexperiments have been performed at lower temperatures,but the high speed performance at 85 °C is crucial for mostshort-distance optical interconnect applications.Thus, ... excellent static performance, i.e. high external efficiency even at 85 °C, these devices demon-strate the potential of this novel active material for temperature stable ultra high speed VCSELs. At...
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