BG25346351
... In SONET/SDH systems, the limiting parameters are digital whereas in DWDM systems, with high power and high number of channels, it is usually the analog impairments which limit the transmission. These impairments on singlemode fibers can be divided into linear and nonlinear effects. ...
... In SONET/SDH systems, the limiting parameters are digital whereas in DWDM systems, with high power and high number of channels, it is usually the analog impairments which limit the transmission. These impairments on singlemode fibers can be divided into linear and nonlinear effects. ...
EN 2315356
... low-bandwidth and unreliable wireless links compared to wired communication. An individual sensor may suffer intermittent connectivity due to high bit error rate (BER) of the wireless link, and it can be further deteriorated by environmental hazard. The challenge is to provide reliable information b ...
... low-bandwidth and unreliable wireless links compared to wired communication. An individual sensor may suffer intermittent connectivity due to high bit error rate (BER) of the wireless link, and it can be further deteriorated by environmental hazard. The challenge is to provide reliable information b ...
Lecture 20
... seldom used on low bit-error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer ...
... seldom used on low bit-error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer ...
1_hProtocolsOSI
... • Examples of Data Link protocols include Ethernet, Token Ring and FDDI • At this layer, systems are generally identified by what is referred to as their hardware or MAC address. ...
... • Examples of Data Link protocols include Ethernet, Token Ring and FDDI • At this layer, systems are generally identified by what is referred to as their hardware or MAC address. ...
Speed Communications for Selected Applications with UDP For
... a UDP packet does not require any connection to be established in advance. Because of this, UDP packet transmission is very efficient, but the process is also prone to loss or error. UDP uses a simple packet header of 32 bits in length, compared to TCP headers, which can be 192 bits long. UDP uses ...
... a UDP packet does not require any connection to be established in advance. Because of this, UDP packet transmission is very efficient, but the process is also prone to loss or error. UDP uses a simple packet header of 32 bits in length, compared to TCP headers, which can be 192 bits long. UDP uses ...
Moratuwa Campus Final Year BSC Engineering December
... optical fibre behaves differently for different wavelength of light. The following diagram shows that. The three windows of wavelengths where the attenuation is lower is given below. Hence these 3 windows are mostly used for practical purposes. ...
... optical fibre behaves differently for different wavelength of light. The following diagram shows that. The three windows of wavelengths where the attenuation is lower is given below. Hence these 3 windows are mostly used for practical purposes. ...
pptx - CSE Labs User Home Pages
... Goal 3a. A Multipath TCP user should get at least as much throughput as a single-path TCP would on the best of the available paths. Goal 3b. A Multipath TCP flow should take no more capacity on any link than a single-path TCP would. ...
... Goal 3a. A Multipath TCP user should get at least as much throughput as a single-path TCP would on the best of the available paths. Goal 3b. A Multipath TCP flow should take no more capacity on any link than a single-path TCP would. ...
Chapter 12 Outline
... Proliferation of devices – It is relatively easy to attack wireless devices as compared to other target hosts. (1) Windows-based tools for locating and sniffing wireless-based networks have turned anyone who can download files from the Internet and has a wireless card into a potential attacker. (2) ...
... Proliferation of devices – It is relatively easy to attack wireless devices as compared to other target hosts. (1) Windows-based tools for locating and sniffing wireless-based networks have turned anyone who can download files from the Internet and has a wireless card into a potential attacker. (2) ...
Proposed Differentiated Services on the Internet
... Email, usenet, ftp and telnet were applications that generated almost similar type of traffic stream on the Internet This traffic required “reliability”. The protocols were expected to deliver all the data no matter how long it took With high error rate, the elapsed time simply increased but ...
... Email, usenet, ftp and telnet were applications that generated almost similar type of traffic stream on the Internet This traffic required “reliability”. The protocols were expected to deliver all the data no matter how long it took With high error rate, the elapsed time simply increased but ...
ppt
... Transmission Technology broadcast :: a single communications channel shared by all machines (addresses) on the network. Broadcast can be both a logical and a physical concept(e.g. Media Access Control (MAC) sublayer ) . multicast :: communications to a specified group. This requires a group address. ...
... Transmission Technology broadcast :: a single communications channel shared by all machines (addresses) on the network. Broadcast can be both a logical and a physical concept(e.g. Media Access Control (MAC) sublayer ) . multicast :: communications to a specified group. This requires a group address. ...
SIFS
... Only the data is encrypted (the MAC layer is not changed after the encryption). WEP doesn’t protect from traffic analysis. RC4 – symmetric stream cipher algorithm with variable key length is used (same key and algorithm for encryption and decryption) ...
... Only the data is encrypted (the MAC layer is not changed after the encryption). WEP doesn’t protect from traffic analysis. RC4 – symmetric stream cipher algorithm with variable key length is used (same key and algorithm for encryption and decryption) ...
05_Scalability
... happens if we have 1000 other hosts? What if each of those is also sending updates? The data sent by a single host scales linearly with the number of hosts; the total data on the network scales with the square of the number of participants This is a recipe for disaster ...
... happens if we have 1000 other hosts? What if each of those is also sending updates? The data sent by a single host scales linearly with the number of hosts; the total data on the network scales with the square of the number of participants This is a recipe for disaster ...
International Journal of Electrical, Electronics and Computer
... node infrastructure in wireless sensing networks is useful and powerful to collect soil, environment, and crop information in remote for precision agriculture. The real-time soil and environment data, and crop images can be dynamically collected in remote area by the crop field monitoring systems in ...
... node infrastructure in wireless sensing networks is useful and powerful to collect soil, environment, and crop information in remote for precision agriculture. The real-time soil and environment data, and crop images can be dynamically collected in remote area by the crop field monitoring systems in ...
CV - Electrical and Computer Engineering
... Networking: networked systems, next generation wireless networks: architectures, resource allocation and protocol design Postdoctoral Researcher, with Prof. U. Madhow and Prof. E. Belding, UCSB Network modeling, protocol design, and experimentation for multi-gigabit outdoor and indoor wireless netwo ...
... Networking: networked systems, next generation wireless networks: architectures, resource allocation and protocol design Postdoctoral Researcher, with Prof. U. Madhow and Prof. E. Belding, UCSB Network modeling, protocol design, and experimentation for multi-gigabit outdoor and indoor wireless netwo ...
Ad Hoc Wireless Routing COS 461: Computer Networks
... and UPDATE. • If no new route is found, node will send CLEAR packet to remove invalid routes. • Internet MANET Encapsulation Protocol (IMEP): for routing control messages and notification for broken/created links (BEACON/HELLO) ...
... and UPDATE. • If no new route is found, node will send CLEAR packet to remove invalid routes. • Internet MANET Encapsulation Protocol (IMEP): for routing control messages and notification for broken/created links (BEACON/HELLO) ...
Effective Anomaly Detection in Sensor Networks Data Streams
... Let X = [x1 , . . . , xL ] denote the network data matrix in which xi ∈ RN is a N -dimensional vector representing the status of N nodes at time instance i. A central monitor collects information from these distributed nodes to make a decision, and two cases can be considered: Case 1: It is difficul ...
... Let X = [x1 , . . . , xL ] denote the network data matrix in which xi ∈ RN is a N -dimensional vector representing the status of N nodes at time instance i. A central monitor collects information from these distributed nodes to make a decision, and two cases can be considered: Case 1: It is difficul ...
