ims and high speed downlink packet access

... Internet giá rẻ thiết bị di động Trong tương lai không xa, mạng UMTS nâng cấp lên High Speed Downlink Packet Access (HSDPA) - gọi với tên 3,5G HSDPA cho phép đẩy nhanh tốc độ tải xuống tới 10 ... tách biệt CHƯƠNG 2: CÔNG NGHỆ HSDPA CHO MẠNG UMTS 2.1 Khái Niệm Công Nghệ HSDPA: HSDPA – High Speed Downlink Packet Aceess: truy nhập đường xuống tốc độ cao giải pháp cho mạng UMTS 3GPP chuẩn hóa ... đường xuống qua tin cho phép truy nhập (Access Grant) Bản tin cho phép truy nhập tin hệ thống gửi cho MS để trả lời tin Yêu cầu truy nhập ngẫu nhiên (Random Access Request) MS Mã phân kênh thay...

Ngày tải lên: 20/11/2012, 11:31

... soils and groundwater: an evaluation, Engineering Geology, 60(1-4), 193-207 [5] Robert H Kadlec and Robert L Knight Treatment Wetlands CRC Lewis Publishers 1996 [6] APHA, AWWA and WPCF: Standard ... concentration decreased Particles were caught by bio-filter and were taken in the small animals, and thus it is thought that high- speed biodegradation might be carried out It is thought that ... is very useful for floatation and supplying oxygen Screw pump is very useful for keeping alive very small animals, and organics may be degrades biologically at high speed by the ecosystem formed...

Ngày tải lên: 05/09/2013, 08:40

... using MOSFET and CNFET technologies In “Proposed full adder cell designs,” we introduce two novel high- speed and low-power carbon nanotube full adders in dynamic logic “Simulation results and comparison” ... “0” and COUT output is unchanged and it is equal to “1.” At this phase when SIGMA is “1,” the T1, T2, and T3 transistors are “off.” As a result, both outputs, SUM and COUT, are unchanged and ... Moaiyeri MH, Navi K: High speed NP-CMOS and multi-output dynamic full adder cells International Journal of Electrical, Computer, and Systems Engineering 2010, 4:4 Bagherizadeh and Eshghi Nanoscale...

Ngày tải lên: 21/06/2014, 00:20

... [18, 19] To solve this problem and enable WiFi to be used in a disaster, we developed long-range and high- speed wireless LAN units to establish makeshift but high- speed wireless LAN networks These ... high- speed (broadband) networks; (3) smooth and efficient connectivity with TCP/IP networks; (4) available use of all software (video-conferencing software, etc.) and equipment (video cameras and ... signal CBR and VBR stand for constant bit rate and variable bit rate, respectively SIF stands for source input format HalfD1 stands for video size of 352 × 480 pixels for one frame FullD1 stands for...

Ngày tải lên: 22/06/2014, 06:20

... Static parts Main static parts of medium and high speed diesel engines consist of: Bedplate Engine frame (framework) Cylinder block Cylinder liners and Cylinder covers 05/14/16 Editor: Nguyen ... độ dới 4500C 05/14/16 Editor: Nguyen Trung Cuo 31 4.4 Gas exchange system b Valves Valve keeper and rotator Mục đích việc xoay xupáp là: Gạt muội bám nấm đế xupáp, Không cho muội bám vào nấm ... trạng nóng cho xupáp 05/14/16 Editor: Nguyen Trung Cuong 32 4.4 Gas exchange system Valve keeper and rotator 05/14/16 Editor: Nguyen Trung Cuo 33 4.4 Gas exchange system b Valves Valve cages...

Ngày tải lên: 14/05/2016, 20:50

... very high speed (over 200 MHz) so that the image pixels can be accessed in real time through high- speed image sensors As a result, the MCUs (or image processor) using the bridge need not be high ... should provide efficient and easy ways to access image pixels in virtually any shapes, such as rectangles, circles, oval, and points This facilitates fully random access in any random shapes (v) Commercial ... pixel of the frame from iBRIDGE’s RAM at the desired speed and in a random access fashion After placing the column and row value on the Col(9 : 0) and Row(8 : 0) bus, the data (pixel value) of that...

Ngày tải lên: 21/06/2014, 07:20

... V5.0.0 (2002-03), High Speed Downlink Packet Access: Physical layer aspects, (Release 5)” [3] B Sayadi and I Fijalkow, “Joint detection for multicode transmission in downlink high speed UMTS,” in ... combined power control and receiver adaptation in a CDMA uplink, we develop, here, a joint power control and multicode receiver adaptation algorithm suitable for a highspeed UMTS downlink So, the problem ... described in the next section COMBINED DOWNLINK POWER CONTROL AND JOINT MULTICODE RECEIVERS In this section, we propose to combine the downlink power control and the joint multicode receivers The...

Ngày tải lên: 22/06/2014, 22:20

... function and how they differ from 802.11 networks • Outline how 802.11g enhances 802.11b networks • Discuss new and future standards and how they improve 802.11 networks IEEE 802.11a • 802.11a standard ... Infrastructure (U-NII) band – Intended for devices that provide short-range, highspeed wireless digital communications • U-NII spectrum is segmented into four bands – Each band has a maximum power ... the United States – GHz band is allocated to users and technologies other than WLANs U-NII Frequency Band (continued) U-NII Frequency Band (continued) U-NII Frequency Band (continued) • Channel...

Ngày tải lên: 13/09/2012, 10:52

... projects, and especially the common sense, suggest that the HighSpeed Train Turin-Lyon is not an actual priority for Italy, and its construction should be immediately stopped MATERIALS AND METHODS ... performance (between 0.62 and 0.77 MJ/p-km, depending on load factor), while the HSR is characterized by a much higher energy demand and indirect GHG emissions (between 1.02 and 1.44 MJ/p-km) For ... economic and cultural development over many centuries However, the history of the valley also suggests that this has always been an area of conquests, conflicts and political appetites The High Speed...

Ngày tải lên: 20/02/2014, 19:20

... of various candidates For example, " ~ ~", one of the extracted morphemes, is composed of the 2nd candidate at the 1st position, the 1st candidate at the 2nd position and the 3rd candidate at ... corresponds to the candidate level Candidates on the same level form one stream For example, in Fig 6(a), the character at the 3rd position has three candidates: the 1st candidate is ' ~ ' , ... "Haxdwaxe-matchlng Algorithm for High Speed Linguistic Processing in Continuous Speech-recognitlon Systems", $~stems and Computers in Japan, 19(_7~ 72-81 Knuth, D E (1973) Sorting and Searching, The Art...

Ngày tải lên: 21/02/2014, 20:20

... b)mod p where, p is prime and < a < p , ≤ b < p, and a and b are chosen at random We apply q different random permutation for every vector (by choosing random values for a and b, q number of times) ... vectors and randomly permute them (see Appendix A for more details on random permutation functions) A random permutation can be considered as random jumbling of the bits of each vector2 A random ... is the angle between the vectors u and v measured in radians |u.v| is the scalar (dot) product of u and v, and |u| and |v| represent the length of vectors u and v respectively 623 cos(θ(u, v))...

Ngày tải lên: 08/03/2014, 04:22

... projects, and especially the common sense, suggest that the HighSpeed Train Turin-Lyon is not an actual priority for Italy, and its construction should be immediately stopped MATERIALS AND METHODS ... performance (between 0.62 and 0.77 MJ/p-km, depending on load factor), while the HSR is characterized by a much higher energy demand and indirect GHG emissions (between 1.02 and 1.44 MJ/p-km) For ... economic and cultural development over many centuries However, the history of the valley also suggests that this has always been an area of conquests, conflicts and political appetites The High Speed...

Ngày tải lên: 17/03/2014, 07:20

... Limburg and Montabaur Keywords: NEG, high speed rail, transport policy, market access, accessibility JEL classification: R12, R28, R38, R48 Version: September 2010 Introduction “A major new high- speed ... enjoy an increase in accessibility Our results on the one hand confirm expectations that have led to huge public investments into high speed rail all over the world On the other hand, they confirm ... of highways and skyways, which further suffer from terrorism threats and security costs, high speed rail (HSR) systems are increasingly attracting the attention of transport planners and policy...

Ngày tải lên: 17/03/2014, 08:20

... vias, and bends All these high- speed effects tend to produce strange, distorted waveforms that will indeed give the designer a completely different view of high- speed logic signals The physical and ... variations in high- trace-density and high- speed systems In this section we explain the effect that crosstalk-induced impedance and velocity changes will have on signal integrity and timings Additionally, ... process, and other variables From the system designers point of view, there are usually high -and low-voltage thresholds, known as Vih and Vil, associated with the receiving silicon, above which and...

Ngày tải lên: 05/04/2014, 23:04

... America WCDMA radio access has evolved strongly alongside high- speed downlink packet access (HSDPA) and high- speed uplink packet access (HSUPA), together called ‘highspeed packet access (HSPA) When ... Uplink High- Speed Dedicated Physical Control CHannel High- Speed Downlink Shared CHannel High- Speed Physical Downlink Shared CHannel High- Speed Shared Control CHannel High- Speed Downlink Packet Access ... Toskala and Karri Ranta-Aho This chapter introduces the standardization framework around high- speed downlink packet access (HSDPA) and high- speed uplink packet access (HSUPA) and presents the standardization...

Ngày tải lên: 01/06/2014, 09:38

... interests include high- speed wireless LAN prototype integrating MIMO, OFDM, software radio, and smart antenna, wireless access for vehicular environments (WAVE), ultrawide band (UWB), and real-time ... Normalized capacity 0.8 are with LOS link and have less variations comparing to position and On the other hand, the MIMO channels at position and have NLOS links and lower condition numbers meaning ... #1, #2, and #4 receivers 9.3 #1, #3, and #4 receivers 7.1 REFERENCES #2, #3, and #4 receivers 4.5 [1] G D Golden, C J Foschini, R A Valenzuela, and P W Wolniansky, “Detection algorithm and initial...

Ngày tải lên: 22/06/2014, 23:20

... Broadband access raises new demands for channel coding Besides higher decoding speed and decoding capability, reconfigurable decoding performance is highly desired, which suggests that decoding speed ... depths are 49, 57, 61, and 63 for constraint lengths 7, 8, 9, and 10, respectively For our FPGA prototype, due to A Novel High- Speed Configurable Viterbi Decoder for Broadband Access Table 10: Data ... results, in terms of decoding speed, resource usage, and BER, have been obtained using a tailored testbench These confirmed the functionality and the expected higher speeds and lower resources Furthermore,...

Ngày tải lên: 23/06/2014, 01:20

... definitions HSM is said to be: • High Cutting Speed (vc) Machining • High Spindle Speed (n) Machining • High Feed (vf) Machining • High Speed and Feed Machining • High Productive Machining Complex ... marketplace is setting new standards all the time The demands on time and cost efficiency is getting higher and higher This has forced the development of new processes and production techniques ... term High Speed Machining (HSM) commonly refers to end milling at high rotational speeds and high surface feeds For instance, the routing of pockets in aluminum airframe sections with a very high...

Ngày tải lên: 27/06/2014, 14:20

... definitions HSM is said to be: • High Cutting Speed (vc) Machining • High Spindle Speed (n) Machining • High Feed (vf) Machining • High Speed and Feed Machining • High Productive Machining Complex ... marketplace is setting new standards all the time The demands on time and cost efficiency is getting higher and higher This has forced the development of new processes and production techniques ... term High Speed Machining (HSM) commonly refers to end milling at high rotational speeds and high surface feeds For instance, the routing of pockets in aluminum airframe sections with a very high...

Ngày tải lên: 27/06/2014, 23:20