8 synchronizing high speed data transfers

... RS-485 High- Speed Networks High- speed and ultra -high- speed data links commonly use simpler network configurations (see Figure 2)      Single point-to-point links are applied when high data ... Design Considerations for High- Speed RS-485 Data Links Introduction The trend in high- speed data networks continues to push for higher data rates over longer transmission distances, ... ISL3295E ISL3283E ISL3283E Figure Common data link configurations for high- speed applications Renesas Electronics Signal Degradation Through Jitter High- speed RS-485 data links are limited in cable length

Ngày tải lên: 24/10/2022, 20:45

... 38 85 15 (1) High speed only Paris-Bruselles (2) High speed only Rome-Florence (3) High speed only Rome-Florence (4) Upgraded conventional line Figure HSR market share and railway speed 250 Madrid-Barcelona ... in the benefit of the railways.2 High speed trains require high speed infrastructure, meaning that new dedicated track need to be built at a cost substantially higher than the conventional rail ... (though the average commercial speed is substantially below the technically feasible speed) At the beginning of 2008 there were about 10,000 kilometres of new high speed lines in operation around

Ngày tải lên: 17/03/2014, 08:20

... economic adjustments to high speed rail Working paper Original citation: Ahlfeldt, Gabriel M and Feddersen, Arne (2010) From periphery to core: economic adjustments to high speed rail London School ... Feddersen ** From Periphery to Core: Economic Adjustments to High Speed Rail∗∗∗ Abstract: This paper presents evidence that high speed rail systems, by bringing economic agents closer together, ... 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 rail line will

Ngày tải lên: 17/03/2014, 08:20

... the recent past, intra-day financial markets data has become available for analysis This high frequency data (HF data) constitutes price and volumes data that can be observed at intervals that ... using overlapping data vs non-overlapping data In the former, the aggregation of data over q periods is done using overlapping windows of length q, whereas in the latter the data is aggregated ... the data has to be treated with caution since, very high frequency observations bring with it new factors that introduce noise for analysis In this paper, we have used high? ??frequency price data

Ngày tải lên: 24/04/2014, 00:23

... algorithms, scalable data mining, distributed index structures, spatial databases Spatial Database Systems (SDBS) (Gueting, 1994) are database systems for the management of spatial data, i.e point ... suspect that strategies a)–c) will work in data mining also. High performance data mining is still a very new subject with challenges. Roughly speaking, some data mining algorithms can be characterised ... for Data Mining. He has been active in the development of high performance and wide area data mining systems for over ten years. More recently, he has worked on standards and testbeds for data

Ngày tải lên: 01/06/2014, 09:18

... these high- speed image sensors produce data at such a high rate that cannot be processed in real time As a consequence, most high- speed image sensors are difficult to use in low-power and low -speed ... high- speed image sensors with low-performance MCU (i) The bridge hardware should operate at very high speed (over 200 MHz) so that the image pixels can be accessed in real time through high- speed ... Total Cmd 1001 Cmd2 Reg Data 0010 Sleep Reg Adr 1010 Cmd3 Reg Adr 0011 Sleep Reg Data 1011 Cmd3 Reg Data 0100 Wake Reg Adr 1100 Cmd4 Reg Adr 0101 Wake Reg Data 1101 Cmd4 Reg Data 0110 Cmd1 Reg Adr

Ngày tải lên: 21/06/2014, 07:20

... doi:10.1155/2010/728468 Research Article Design of an Omnidirectional Multibeam Transmitter for High- Speed Indoor Wireless Communications Jaw-Luen Tang and Yao-Wen Chang Department of Physics, National ... distribution, and reproduction in any medium, provided the original work is properly cited For future high speed indoor wireless communication, diffuse wireless optical communications offer more robust ... optical wireless communication system has received great attention due to its capability for future high speed and flexible optical communications at low cost [1–11] Wireless optical link can also offer

Ngày tải lên: 21/06/2014, 17:20

... maximizing the data throughput by exploiting the degrees of freedom in MIMO channels Since the multiplexing gain is only available for high SNR region, spatial multiplexing is usually used when high SNR ... to 25 dB For high- end users, SM is preferred when SNR is at least higher than 10 dB On the other hand, the MMSE mode will consume substantiately lower power than the MFSCO mode, the high- end users ... in MIMO channels Since the multiplexing gain is only available in high SNR region, spatial multiplexing is usually used when high SNR is available As depicted in Figure 2(a), spatial multiplexing

Ngày tải lên: 21/06/2014, 17:20

... diameter dish, uplink speed is less than about Mbps, even though downlink speed is up to 60 Mbps In providing telemedicine, uplink speeds are an important feature since high- quality still or ... 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 networks would establish communication ... current Japanese regulation for EIRP, (b) an attenuator used with a higher gain antenna DEVELOPMENT OF LONG-RANGE AND HIGH- SPEED WIRELESS LAN UNITS Most of the information provided in this paper

Ngày tải lên: 22/06/2014, 06:20

... significant increase of the modulation speed of VCSELs combined with the demands for power, degradation robustness and speed of next generation ultrahigh speed systems require new material and ... media capable to ultrahigh current densities without suffering from gain saturation and lifetime degradation effects is a must to realize ultrahigh -speed directly modulated high- temperature VCSELs ... of submonolayer (SML) quantum dots (QDs) in high- speed vertical-cavity surface-emitting lasers (VCSELs) SML deposition enables controlled formation of high density QD arrays with good size and

Ngày tải lên: 22/06/2014, 18:20

... especially in highspeed wireless LANs First, the distributed scheme derives CW by modeling the DCF MAC The result cannot be readily applied to high- speed wireless networks The MAC design in high- speed ... Figure 5: Network throughput versus physical-layer data rates 40 30 216 Mb/s data rate, which reveals the advantage of ASM in supporting high- speed physical layer 20 10 15 45 75 105 135 165 195 ... Slot time μs 14 bytes ACK size Peak datarate (11a) 54 Mb/s Peak datarate (11n) 216 Mb/s 16 μs PLCP preamble DIFS PIFS MAC header Basic datarate (11a) Basic datarate (11n) PLCP header length 34

Ngày tải lên: 22/06/2014, 19:20

... codes for UWB channels supporting a data rate up to 480 Mbps In this paper, we improve the proposed system using turbo TCM with QAM constellation for higher data rate transmission We construct ... can offer a much higher spectral efficiency, for example, 1.2 Gbps, which is 2.5 times higher than the proposed system We identify several essential requirements to achieve the high rate transmission, ... accurately measure position location and range, immunity to significant fading, high multiple-access capability, extremely high data rate at short ranges, and easier material penetrations [1–3] It is

Ngày tải lên: 22/06/2014, 22:20

... present the full high- speed smart camera architecture, and in particular the interface choice dedicated to high- speed video data transfer 2.1 Image acquisition using a high- speed CMOS sensor ... the transfer, or the storing of the data The embedded processings must be adapted to this high- speed data flow and they represent the main core of the high- speed smart camera The embedded processings ... highspeed cameras Taking these advantages in consideration, we used the MTM9M413 high- speed CMOS image sensor from Micron R Mosqueron et al Figure 1: CMOS imager in order to design our high- speed

Ngày tải lên: 22/06/2014, 22:20

... modulation techniques for very high speed digital subscriber lines,” IEEE Communications Magazine, vol 38, no 5,... “Filtered multitone modulation for very high- speed digital subscriber ... system. At the transmitter, the data symbol streams s k (n) are first expanded to a higher rate by inserting M −1ze- ros after each sample. Modulation and multiplexing of data streams are then done ... modulation (MCM) has at- tracted considerable attention as a practical and viable tech- nology for high- speed data transmission over spectrally shaped noisy channels [1–6]. The most popular MCM tech-

Ngày tải lên: 22/06/2014, 23:20

... prototype, due to A Novel High- Speed Configurable Viterbi Decoder for Broadband Access 1323 Table 10: Data format in survivor memory for constraint length 7. State Address Data 01234567 Bit0 00 08 ... the data for- mat in survivor memory because the traceback logic is de- cided by the survivor data format in the survivor memory. The input data bus of DpRAM is connected to the survivor data ... demands for channel coding. Besides higher decoding speed and decoding capability, re- configurable decoding performance is highly desired, which suggests that decoding speed can be traded for decoding

Ngày tải lên: 23/06/2014, 01:20

... definitions HSM is said to be: • High Cutting Speed (v c ) Machining • High Spindle Speed (n) Machining • High Feed (v f ) Machining • High Speed and Feed Machining • High Productive Machining ... certain level. The linear dependence between cutting speed and feed rate results in ? ?high feeds with high speeds“. The feed will become even higher if a smaller cutter diameter is chosen, provided ... moderate spindle speeds and large sized cutters. • HSM is performed in finishing in hardened steel with high speeds and feeds, often with 4-6 times conven- tional cutting data. • HSM is High Productive

Ngày tải lên: 27/06/2014, 14:20

... definitions HSM is said to be: • High Cutting Speed (v c ) Machining • High Spindle Speed (n) Machining • High Feed (v f ) Machining • High Speed and Feed Machining • High Productive Machining ... World High speed machining and conventional die and mould machining 2 Historical background The term High Speed Machining (HSM) commonly refers to end milling at high rotational speeds and high ... certain level. The linear dependence between cutting speed and feed rate results in ? ?high feeds with high speeds“. The feed will become even higher if a smaller cutter diameter is chosen, provided

Ngày tải lên: 27/06/2014, 23:20

... Multiplexing (OFDM) – Splits a high- speed digital signal into several slower signals running in parallel – Sends the transmission in parallel across several lower -speed channels Orthogonal Frequency ... 802.11n • Aimed at providing data rates higher than 100 Mbps using the 2.4 GHz ISM band • Bonds two 802.11 2.4 GHz ISM channels together – Uses OFDM to send two data streams at 54 Mbps • Implements ... are confined to the physical layer • 802.11a achieves its increase in speed and flexibility over 802.11b through: – – – – A higher frequency band More transmission channels Its multiplexing technique...

Ngày tải lên: 13/09/2012, 10:52

... pháp truy cập 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 ... lại có UE kết nối với Vì SGSN quản lý tất UE kết nối dịch vụ data vùng quản lý Cụ thể là: - Xác nhận (Authenticate) UE dùng dịch vụ data kết nối với - Quản lý việc đăng ký UE vào mạng - Quản lý ... BSC 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...

Ngày tải lên: 20/11/2012, 11:31

... phần tử, phần tử dãy có kiểu BIT Ví dụ, Thực mạch sau (DATA and “01”)(0) D Q Z (DATA and “10”)(1) CK Q Clock Entity MEMO_ONE is Port ( DATA: in BIT_VECTOR (1 downto 0); CLOCK :in BIT; Z: out ... Begin Process (CLOCK) Variable A1, A2: BIT_VECTOR (DATA range); Variable A3: BIT; Begin If CLOCK = ‘1’ and CLOCK’event then A1 := DATA and K1; A2 := DATA and K2; A3 := A1(0) or A2(1); Z

Ngày tải lên: 12/09/2013, 22:38