Comparison of LTE and WiMAX
... and resulting battery life. (OFDM transmissions consist of multiple subcarriers leading to a relatively larger PAPR than those for a single-carrier.) SC-FDMA provides a 1-2 dB PAPR advantage over OFDMA that in turn improves battery life of subscriber devices (SC-FDMA would increase receiver complexi ...
... and resulting battery life. (OFDM transmissions consist of multiple subcarriers leading to a relatively larger PAPR than those for a single-carrier.) SC-FDMA provides a 1-2 dB PAPR advantage over OFDMA that in turn improves battery life of subscriber devices (SC-FDMA would increase receiver complexi ...
Introduction to MPLS
... Only need to change relevant routers (end points) Coupled with encryption, gives you a secure private ...
... Only need to change relevant routers (end points) Coupled with encryption, gives you a secure private ...
Msc Jian Li 2013 - Department of Electrical and Computer
... other application-specific devices to control and monitor the grid system. Figure 1.1 shows the conceptual diagram in smart grid communications. Currently, the constant improvements of smart grid technology have made a great progress on flexibility, security, reliability and efficiency of the electr ...
... other application-specific devices to control and monitor the grid system. Figure 1.1 shows the conceptual diagram in smart grid communications. Currently, the constant improvements of smart grid technology have made a great progress on flexibility, security, reliability and efficiency of the electr ...
GPRS
... Each BSC requires the installation of one or more Packet Control Units (PCUs) and a software upgrade. The PCU provides a physical and logical data interface to the base station subsystem (BSS) for packet data traffic. The BTS can also require a software upgrade but typically does not require hardwar ...
... Each BSC requires the installation of one or more Packet Control Units (PCUs) and a software upgrade. The PCU provides a physical and logical data interface to the base station subsystem (BSS) for packet data traffic. The BTS can also require a software upgrade but typically does not require hardwar ...
Gaming the Jammer: Is Frequency Hopping Effective
... hopping scheme, a node switches to a new channel only if and when it detects the presence of a jammer. With such a scheme, when one member of a communicating node pair switches to a new channel, the other member will have to somehow detect the event and change its band as well. Xu et al [7] [9] prop ...
... hopping scheme, a node switches to a new channel only if and when it detects the presence of a jammer. With such a scheme, when one member of a communicating node pair switches to a new channel, the other member will have to somehow detect the event and change its band as well. Xu et al [7] [9] prop ...
A lower bound
... We analyze the number of links that interfere with link (i, j) in each interfering cell Based on Lemma 12.2 and the adopted routing scheme, the number of transmissions in a cell is equal to the number of S-D lines intersecting this cell, which is Following a similar analysis, we can obtain the ...
... We analyze the number of links that interfere with link (i, j) in each interfering cell Based on Lemma 12.2 and the adopted routing scheme, the number of transmissions in a cell is equal to the number of S-D lines intersecting this cell, which is Following a similar analysis, we can obtain the ...
What are the advantages to organizations of using computer networks
... 106) When categorized based on how many senders and receivers there are, how many types of communication systems do we have? a) Two. b) Three. c) Four. d) Five. e) None of the above. 107) When categorized based on its potential use, how many types of computer systems do we have? a) Two b) Three c) F ...
... 106) When categorized based on how many senders and receivers there are, how many types of communication systems do we have? a) Two. b) Three. c) Four. d) Five. e) None of the above. 107) When categorized based on its potential use, how many types of computer systems do we have? a) Two b) Three c) F ...
Slide 1
... various functions are on; done by putting itself to sleep • It can tell its access point it’s asleep, so frames aren’t sent to it until it wakes up! INFO 331 chapter 6 ...
... various functions are on; done by putting itself to sleep • It can tell its access point it’s asleep, so frames aren’t sent to it until it wakes up! INFO 331 chapter 6 ...
GSM
... Worldwide connectivity one number, the network handles localization High capacity better frequency efficiency, smaller cells, more customers per cell High transmission quality high audio quality and reliability for wireless, uninterrupted phone calls at higher speeds (e.g., from cars, tr ...
... Worldwide connectivity one number, the network handles localization High capacity better frequency efficiency, smaller cells, more customers per cell High transmission quality high audio quality and reliability for wireless, uninterrupted phone calls at higher speeds (e.g., from cars, tr ...
Evaluating the Eifel Algorithm for TCP in a GPRS Network
... for TCP [4] within the context of GPRS. The Eifel algorithm is a mechanism to detect and respond to spurious timeouts and spurious fast retransmits in TCP. We simulate bulk data connections of TCP Reno, NewReno [8] and SACK [2] while generating delay spikes that are typical for those caused by cell ...
... for TCP [4] within the context of GPRS. The Eifel algorithm is a mechanism to detect and respond to spurious timeouts and spurious fast retransmits in TCP. We simulate bulk data connections of TCP Reno, NewReno [8] and SACK [2] while generating delay spikes that are typical for those caused by cell ...
Evolved Universal Terrestrial Radio Access (E-UTRA)
... Maximum number of DL-SCH transport block bits received within a TTI ........................................... 9 Maximum number of bits of a DL-SCH transport block received within a TTI .................................... 9 Total number of DL-SCH soft channel bits ................................. ...
... Maximum number of DL-SCH transport block bits received within a TTI ........................................... 9 Maximum number of bits of a DL-SCH transport block received within a TTI .................................... 9 Total number of DL-SCH soft channel bits ................................. ...
ROVANIEMI UNIVERSITY OF APPLIED SCIENCES SCHOOL OF TECHNOLOGY
... Nowadays, almost telecommunication companies are established for commercial purposes indicating how to make maximum profits from telecommunication service. As a result, the competition is one of important aspects for the companies’ development. Reducing input cost and increasing quality of services ...
... Nowadays, almost telecommunication companies are established for commercial purposes indicating how to make maximum profits from telecommunication service. As a result, the competition is one of important aspects for the companies’ development. Reducing input cost and increasing quality of services ...
Emerging_Wireless_Standards2
... improvements in reliability, comparable to increasing the transmit power by a factor of ...
... improvements in reliability, comparable to increasing the transmit power by a factor of ...
Multi-Protocol Label Switch (MPLS)
... • Traffic engineering allows a network administrator to select the path between two notes and bypass the normal routed hop-by-hop paths. An administrator may elect to explicitly define the path between nodes to ensure QoS or have the traffic follow a specified path to avoid traffic congestion at cer ...
... • Traffic engineering allows a network administrator to select the path between two notes and bypass the normal routed hop-by-hop paths. An administrator may elect to explicitly define the path between nodes to ensure QoS or have the traffic follow a specified path to avoid traffic congestion at cer ...
WWG Draft Green Book v0.117 - ccsds cwe
... British National Space Centre (BNSC)/United Kingdom. ...
... British National Space Centre (BNSC)/United Kingdom. ...
on Allocation and Pricing of Microwave Access (MWA) and
... With the changing requirements and increasing users’ data demand, the access technology has evolved over a period of time. It has resulted in better use of spectrum in terms of improved spectral efficiencies and more capacity as shown in the Table 2.2. However, the higher data carrying capacity of a ...
... With the changing requirements and increasing users’ data demand, the access technology has evolved over a period of time. It has resulted in better use of spectrum in terms of improved spectral efficiencies and more capacity as shown in the Table 2.2. However, the higher data carrying capacity of a ...
VOIP AND MOBILITY
... from anywhere with a sufficiently fast Internet connection. A user can make and receive phone calls,no matter…where he is present on the globe. VoIP phones can integrate with other services available over the Internet, including video conversation, message or data file exchange in parallel with the ...
... from anywhere with a sufficiently fast Internet connection. A user can make and receive phone calls,no matter…where he is present on the globe. VoIP phones can integrate with other services available over the Internet, including video conversation, message or data file exchange in parallel with the ...
Paper - Steve Talbot
... aid signal reception. This distance is usually equal to 1 wavelength distance of the signal being propagated. “Pattern Antenna Diversity” is the practice of placing multiple antenna in close proximity, where each antenna has a different radiation pattern. Each antenna is unidirectional, often provid ...
... aid signal reception. This distance is usually equal to 1 wavelength distance of the signal being propagated. “Pattern Antenna Diversity” is the practice of placing multiple antenna in close proximity, where each antenna has a different radiation pattern. Each antenna is unidirectional, often provid ...
Packet Optical Networking for LTE Cell Tower Backhaul
... Current landscape Many, if not most, backhaul deployments use SONET Using Multi-Service Provisioning Platforms (MSPP) ...
... Current landscape Many, if not most, backhaul deployments use SONET Using Multi-Service Provisioning Platforms (MSPP) ...
Carrier Ethernet – the Technology of Choice for Access
... 3G, with early deployments of HSDPA (High Speed Downlink Packet Access) already under way and HSUPA (High Speed Uplink Packet Access) on the horizon. HSDPA and HSUPA are especially important because they offer the high quality and capacity needed to handle the emerging data-intensive applications di ...
... 3G, with early deployments of HSDPA (High Speed Downlink Packet Access) already under way and HSUPA (High Speed Uplink Packet Access) on the horizon. HSDPA and HSUPA are especially important because they offer the high quality and capacity needed to handle the emerging data-intensive applications di ...
Wireless A to Z
... Digital technology is now dominant in the mobile telephone sector. At the end of 2001, digital customers made up almost 80 percent of the industry total, up from 72 percent at year-end 2000. In part because of competitive pressures in the marketplace, the average price of residential mobile telephon ...
... Digital technology is now dominant in the mobile telephone sector. At the end of 2001, digital customers made up almost 80 percent of the industry total, up from 72 percent at year-end 2000. In part because of competitive pressures in the marketplace, the average price of residential mobile telephon ...
Y-Comm: A new architecture for heterogeneous networking
... ◦ The mobile node can know or estimate the network state at a given point before it arrives at that point ◦ Proactive Policies allow us to maximize the use of available channels provided you know the amount of time a channel will be available. ◦ That time is known as: Time before vertical handover ...
... ◦ The mobile node can know or estimate the network state at a given point before it arrives at that point ◦ Proactive Policies allow us to maximize the use of available channels provided you know the amount of time a channel will be available. ◦ That time is known as: Time before vertical handover ...
Mobile Communications
... ATM Forum founded the Wireless ATM Working Group June 1996 Task: development of specifications to enable the use of ATM technology also for wireless networks with a large coverage of current network scenarios (private and public, local and global) compatibility to existing ATM Forum standards import ...
... ATM Forum founded the Wireless ATM Working Group June 1996 Task: development of specifications to enable the use of ATM technology also for wireless networks with a large coverage of current network scenarios (private and public, local and global) compatibility to existing ATM Forum standards import ...
Emerging_Wireless_St.. - Cognitive Radio Technologies
... improvements in reliability, comparable to increasing the transmit power by a factor of ...
... improvements in reliability, comparable to increasing the transmit power by a factor of ...
Cellular network
A cellular network or mobile network is a communications network where the last link is wireless. The network is distributed over land areas called cells, each served by at least one fixed-location transceiver, known as a cell site or base station. In a cellular network, each cell uses a different set of frequencies from neighboring cells, to avoid interference and provide guaranteed bandwidth within each cell.When joined together these cells provide radio coverage over a wide geographic area. This enables a large number of portable transceivers (e.g., mobile phones, pagers, etc.) to communicate with each other and with fixed transceivers and telephones anywhere in the network, via base stations, even if some of the transceivers are moving through more than one cell during transmission.Cellular networks offer a number of desirable features: More capacity than a single large transmitter, since the same frequency can be used for multiple links as long as they are in different cells Mobile devices use less power than with a single transmitter or satellite since the cell towers are closer Larger coverage area than a single terrestrial transmitter, since additional cell towers can be added indefinitely and are not limited by the horizonMajor telecommunications providers have deployed voice and data cellular networks over most of the inhabited land area of the Earth. This allows mobile phones and mobile computing devices to be connected to the public switched telephone network and public Internet. Private cellular networks can be used for research or for large organizations and fleets, such as dispatch for local public safety agencies or a taxicab company.