multiplexing and multiple access techniques ppt

Ngày tải lên: 21/06/2014, 01:20

... Internet and Surrounding 1/12 Baey, Fladenmuller – Subject 5 MOB Subject 5 Access methods Static and dynamic access techniques 1. Static access techniques 1.1 Space-division multiple- access (SDMA) When ... from a very low yield. You lose the multiplexing gain! 3. Dynamic access techniques Pure Aloha: the principle of Aloha is to let talk to everyone when he wants it and without discrete the moments ... Frequency-division multiple access (FDMA) 1. A cellular system uses the FDMA, with a spectrum allocation of 12,5 MHz in each direction, a guard band of 10 kHz of each end of the allocation spectrum and a...

Ngày tải lên: 17/09/2012, 09:13

Ngày tải lên: 11/07/2014, 21:20

Ngày tải lên: 05/08/2014, 09:46

Ngày tải lên: 20/06/2014, 04:20

Ngày tải lên: 21/06/2014, 22:20

Ngày tải lên: 22/06/2014, 01:20

... with multiple access protocols,which govern access to these resources. The basic multiple access schemes are briefly described further below in this section, and the importance of the multiple access ... The GPRS Random Access Algorithm 197 4.11.1 Why a New Random Access Scheme for GPRS? 197 4.11.2 Stabilisation of the Random Access Algorithm 198 4.11.3 Prioritisation at the Random Access 206 4.11.4 ... of its resources to support multiple communications, basic multiple access techniques (such as frequency-, time-, or code-division multiple access, with FDMA, TDMA, and CDMA as their respective...

Ngày tải lên: 02/03/2013, 16:59

... Modules Each standard module contains three front panel jacks for easy passive and/ or intrusive access to the circuit and two rear connectors for attachment to data terminating and/ or communication ... Management and Access Products 17 12/02 • 517 Data Management and Access Products www.adc.com • +1-952-938-8080 • 1-800-366-3891 EIA-232/V.24 PatchMate ™ EIA-232/V.24 has been a long standing electrical ... PatchMate ™ Modules  FRONT PANEL ACCESS- 1 TEST EQUIP-2 MONITOR CIRCUITS FRONT PANEL ACCESS- 2 TEST EQUIP-1 INTERFACE MODULE Interface Module with LEDs and Alarms Test Module with LEDs and Alarms Interface...

Ngày tải lên: 10/12/2013, 17:15

... router. • Show multiple HTTP and Telnet sessions on a single host. • Show multiple HTTP and Telnet sessions on a single host. • Observe well-known TCP port numbers on the host and router. Background/Preparation ... a. Allow HTTP access by issuing the ip http server command in global configuration mode. Step 5 Use the workstation browser to access the router a. Open a browser on Host 1 and type http://ip-address ... privileged exec command mode GAD# copy running-config startup-config Step 3 Configure the host with the proper IP address, subnet mask and default gateway Step 4 Allow HTTP access to the router...

Ngày tải lên: 11/12/2013, 14:15

... network processor-based and allow for both policing and shaping on both ingress and egress, using CBWFQ/LLQ for packet scheduling. 10 Ethernet Access for Next Generation Metro and Wide Area Networks OL-14760-01 ... of where a trunked handoff might be used: • EVPL • EVPL access to ATM service interworking • EVPL access to Frame Relay • EVPL access to MPLS Figure 4 shows a trunked handoff using IEEE 802.1Q ... FastEthernet, or GigabitEthernet access link. Examples The following are common examples of a simple handoff: • DSL broadband service • Cable broadband service • Ethernet Internet access • Ethernet...

Ngày tải lên: 21/12/2013, 06:15

... efficiency for 8-PSK and for 8- and 16-QAM. Coherent de- tection also enables electrical channel demultiplexing and CD compensation. Coherent detection requires a local oscillator laser and polarization ... and quadrature field components). Based on Fig. 2, at spectral efficiencies below 1 b/s/Hz per polarization, 2-PAM (OOK) and 2-DPSK are attractive techniques. Between 1 and 2 b/s/Hz, 4-DPSK and ... attractive techniques. At spectral efficiencies above 2 b/s/Hz, 8-PSK and 8- and 16-QAM become the most attractive techniques. Table 2 compares key attributes of direct, interferometric and coherent...

Ngày tải lên: 20/01/2014, 06:20

... – Administrator Tools – Routing and Remote Access (Start – Run – Rrasmgmt.msc) 2. Click phải mouse tại Server1 - Chọn Configure and Enable Routing and Remote Access Huy Hoàng 47k_DTVT_Vinhuni Kiểm ... như Router hay Switch L3 (Router cứng), ta dùng Server với 2 NIC và dùng dịch vụ Routing and Remote Access (RRAS) để thay thế chức năng Router (Router mềm). Để cấp phát IP cho các Client Computer ... Huy Hoàng 47k_DTVT_Vinhuni Routing and Remote Access Phần I: Lý thuyết I. Đặt vấn đề: Giả sử hệ thống có 3 mạng như mô hình: Đường mạng...

Ngày tải lên: 20/01/2014, 10:20

... surfaces and the multiple point formula By A. Calabri, C. Ciliberto, F. Flamini, and R. Miranda* Annals of Mathematics, 165 (2007), 335–395 On the K 2 of degenerations of surfaces and the multiple ... the intersection of P i and P i+1 ; • ε i = deg(P i ) − 1, which is 0 if P i is a plane and 1 if P i is a quadric; 354 A. CALABRI, C. CILIBERTO, F. FLAMINI, AND R. MIRANDA Moreover, if X = X 0 is ... Cohen-Macaulay singularities and two fundamental concepts introduced and studied by Koll´ar in [23] and [24]. Recall that V = V 1 ∪···∪V r ⊂ P n , a reduced, equidimensional and non- degenerate scheme,...

Ngày tải lên: 16/02/2014, 06:20

... 6.1 6.47 Figure 6.24 T-1 line for multiplexing telephone lines 6.39 Figure 6.20 Multiple- slot multiplexing 6.29 Figure 6.14 Example 6.6 6.40 Figure 6.21 Pulse stuffing 6.35 A multiplexer combines four ... 6.1 DS and T line rates 6.12 Five channels, each with a 100-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10 ... comparison 6.5 Figure 6.2 Categories of multiplexing 6.8 Figure 6.4 FDM process 6.44 Two channels, one with a bit rate of 100 kbps and another with a bit rate of 200 kbps, are to be multiplexed. How this can...

Ngày tải lên: 16/02/2014, 20:20

... Conservation: A Handbook of Techniques Malcolm Ausden Conservation and Sustainable Use: A Handbook of Techniques E.J. Milner-Gulland and J. Marcus Rowcliffe Invasive Species Management: A Handbook of ... Principles and Techniques Mick N. Clout and Peter A. Williams Amphibian Ecology and Conservation: A Handbook of Techniques C. Kenneth Dodd, Jr. Insect Conservation: A Handbook of Approaches and Methods Michael ... Mammal Ecology and Conservation: A Handbook of Techniques Ian L. Boyd, W. Don Bowen, and Sara J. Iverson Carnivore Ecology and Conservation: A Handbook of Techniques Luigi Boitani and Roger A....

Ngày tải lên: 17/02/2014, 17:20

... specific location and the survey’s objectives, the biology and behavior of the species, its distribution and abundance, the extent and characteristics of the geographic region, and the resources and time ... Chapter11, present techniques for studying and analyzing carnivores’ diets, techniques that go far beyond the dogmatic standard of scat analysis. Nilsen and his coauthors have decades ... be developed. Chapters 4 and 5 discuss field techniques to find evidence of carnivores’ presence and Chapters 3 and 8 discuss uses of survey data to map species’ ranges and to estimate population sizes. OUP...

Ngày tải lên: 06/03/2014, 18:20

... liquid fuels (e.g., ethanol, butanol and 2,3-butanediol) and other products (e.g., acetic acid and butyric acid). Chapters 6 and 7 overview the production and applications of biobutanol. Chapter ... gases and other products. Chap‐ ters 12 and 13 introduce hydrogen production by anaerobic fermentation, and DC and im‐ pulse plasma-liquid systems, respectively. Chapter 14 overviews some techniques ... high-quali‐ fied gaseous, liquid and solid biofuels with many techniques. This book focuses on the latest conversion techniques for the production of liquid and gaseous biofuels that should be...

Ngày tải lên: 07/03/2014, 11:20

... "natural" and "coded" dictionaries, and towards the construc- tion of automated verification and indexing tools. Natural dictionaries are usually accessed by lemmas (normal ... ARIANE-78), and two "open" systems, called "expert corrector systems". The first is inserted at the junction between analysis and transfer, and the second between transfer and ... advanced data base systems to store this lexical knowledge and to implement the various tools required for addition and verifica- tion. VlSULEX and ATLAS (1) are first versions of such tools. Gran~atical...

Ngày tải lên: 08/03/2014, 18:20

... ROUTING AND REMOTE ACCESS 1 I.ROUTING 1 II.REMOTE ACCESS 1 CHƯƠNG II: TRIỂN KHAI ROUTING AND REMOTE ACCESS 2 I.MÔ HÌNH LAB 2 III.TRIỂN KHAI ROUTING AND REMOTE ACCESS 9 1.CÀI ĐẶT ROLE ROUTING AND ... KHAI ROUTING AND REMOTE ACCESS GVHD: PHẠM TUẤN HIỆP TÀI LIỆU THAM KHẢO [1]. LAB 291 - Routing and Remote Access- http://www.ketnoitinhoc.com/web/Windows- OS/lab-291-routing -and- remote -access. html [2]. ... TRIỂN KHAI ROUTING AND REMOTE ACCESS GVHD: PHẠM TUẤN HIỆP Bước 3: Chọn Network Policy and Acess Services > Chọn Next Bước 4: Chọn Next Bước 5: Chọn Routing and Remote Access Services >...

Ngày tải lên: 20/03/2014, 23:20