High Speed Downlink Packet Access
High Speed Downlink Packet Access
... giá rẻ bằng thiết bị di động.Trong tương lai không xa, mạng UMTS có thể nâng cấp lên High Speed Downlink Packet Access (HSDPA) - còn được gọi với tên 3,5G. HSDPA cho phép đẩy nhanh tốc độ tải xuống ... PDC. Các hệ thống sử dụng kỹ thuật TDMA (Time Division Multiple Access) ngoại trừ IS-95 sử dụng kỹ thuật CDMA (Code Division Multiple Access) .Thế hệ 2G có khả năng cung cấp dịch vụ...
Ngày tải lên: 20/11/2012, 11:31
High-Speed WLANs and WLAN Security
... medium access control (MAC) layer functions as 802.11b WLANs–Differences are confined to the physical layer•802.11a achieves its increase in speed and flexibility over 802.11b through:–A higher ... Division 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 10Or...
Ngày tải lên: 13/09/2012, 10:52
A STUDY ON SOLUBILIZATION OF EXCESS SLUDGE BY HIGH SPEED ROTARY DISK PROCESS
... of high speed rotary disk. 200φ 100φ seramic dis k input motor output unit: mm 3500r.p.m. output variable gap water in recirculation pump hopper high speed rotary disk flow meter from high speed ... sludge by high speed rotary disk process. The excess sludge from final sedimentation tank in wastewater treatment plant was used in this study. The experiments of sludge through th...
Ngày tải lên: 05/09/2013, 08:40
Improvement of Water Quality by Removal of Suspended Solids and High-speed Biological Filtration in Closed Water Body
... Technology, Vol.1, No.2, 2003 - 233 - Improvement of Water Quality by Removal of Suspended Solids and High- speed Biological Filtration in Closed Water Body Masayuki Fukagawa*, Tsuyoshi IMAI**, Takashi ... biologically in this system; third, it can remove nutrients; fourth, this system can be kept at high speed enough for enormous treatment of water; and last, it is able to remove slud...
Ngày tải lên: 05/09/2013, 08:40
bài giảng-vhdl - Very High speed integrated circuit Description Language
Ngày tải lên: 12/09/2013, 22:38
Tài liệu High Speed Precision Motion Control doc
... digital control is commonly used in HDDs. In high- end HDDs, a higher sampling frequency is used to maximize the control performance Basic Approach to High- Speed Precision Motion Control 95 even though ... (3.78) where ω N is the center frequency. ζ and d are related to width and depth of Basic Approach to High- Speed Precision Motion Control 83 10 2 10 3 10 4 ï40 ï20 0 20 40 Gain (dB...
Ngày tải lên: 18/02/2014, 22:20
Tài liệu ECONOMIC, ENVIRONMENTAL AND ENERGY ASSESSMENT OF THE TURIN-LYON HIGH-SPEED RAIL pdf
... that the High- Speed Train Turin-Lyon is not a priority for Italy and France, and its construction should be immediately stopped. INTRODUCTION The construction of the High Speed Railway ... Citizenship, a Case Study. The Controversy of High- Speed Rail in the Susa Valley; Paolo Beria, Raffaele Grimaldi, 2011. An Early Evaluation of Italian High Speed Projects. Tema,...
Ngày tải lên: 20/02/2014, 19:20