Document
... • Many ICS have poor authentication mechanisms and very limited authorization mechanisms • Many protocols use cleartext passwords • Many ICS devices lack crypto support • Sometimes passwords left at vendor default • Device passwords are hard to manage appropriately – Often one password is shared amo ...
... • Many ICS have poor authentication mechanisms and very limited authorization mechanisms • Many protocols use cleartext passwords • Many ICS devices lack crypto support • Sometimes passwords left at vendor default • Device passwords are hard to manage appropriately – Often one password is shared amo ...
slides - Fei Hu
... • Many ICS have poor authentication mechanisms and very limited authorization mechanisms • Many protocols use cleartext passwords • Many ICS devices lack crypto support • Sometimes passwords left at vendor default • Device passwords are hard to manage appropriately – Often one password is shared amo ...
... • Many ICS have poor authentication mechanisms and very limited authorization mechanisms • Many protocols use cleartext passwords • Many ICS devices lack crypto support • Sometimes passwords left at vendor default • Device passwords are hard to manage appropriately – Often one password is shared amo ...
Notes on Pulse Modulation
... amplitude of the analog signal at the time the signal is sampled. --The maximum analog signal amplitude produces the widest pulse, and the minimum analog signal amplitude produces the narrowest pulse. Note, however, that all pulses have the same amplitude. Pulse Position Modulation --With PPM, the p ...
... amplitude of the analog signal at the time the signal is sampled. --The maximum analog signal amplitude produces the widest pulse, and the minimum analog signal amplitude produces the narrowest pulse. Note, however, that all pulses have the same amplitude. Pulse Position Modulation --With PPM, the p ...
Pulse modulation
... with two inputs: the sampling pulse and the analog input signal. • For the ADC to accurately convert a voltage to a binary code, the voltage must be relatively constant so that the ADC can complete the conversion before the voltage level changes. If not, the ADC would be continually attempting to fo ...
... with two inputs: the sampling pulse and the analog input signal. • For the ADC to accurately convert a voltage to a binary code, the voltage must be relatively constant so that the ADC can complete the conversion before the voltage level changes. If not, the ADC would be continually attempting to fo ...
Wireless Communications Research Overview
... Data flows to centralized location (joint compression) Low per-node rates but tens to thousands of nodes Intelligence is in the network rather than in the devices ...
... Data flows to centralized location (joint compression) Low per-node rates but tens to thousands of nodes Intelligence is in the network rather than in the devices ...
REMOTE CONTROLLED SMARTHOME OVER PSTN
... Fig. 6 – DTMF decoder Block thus created is an interface between the telephone line and the microcontroller. This circuit realize the conversion of the analogical DTMF signal in four bits digital signal that is needed for the microcontroller input. The analogical DTMF signal is formed from the sum o ...
... Fig. 6 – DTMF decoder Block thus created is an interface between the telephone line and the microcontroller. This circuit realize the conversion of the analogical DTMF signal in four bits digital signal that is needed for the microcontroller input. The analogical DTMF signal is formed from the sum o ...
Background And Preview
... - Encode/modulate the signal,transmit it over the channel and produce an ’’estimate” of the original signal at the receiver output that satisfies the requirements - Do all of this at an affordable cost b. The design of an analog communication system is conceptually simple but difficult to implement ...
... - Encode/modulate the signal,transmit it over the channel and produce an ’’estimate” of the original signal at the receiver output that satisfies the requirements - Do all of this at an affordable cost b. The design of an analog communication system is conceptually simple but difficult to implement ...
ChannelModelling
... additive noise process may arise from electronic components and amplifiers at the receiver of the communication system, or from interference encountered in transmission, as in the case of radio signal transmission. ...
... additive noise process may arise from electronic components and amplifiers at the receiver of the communication system, or from interference encountered in transmission, as in the case of radio signal transmission. ...
Page 1 Transceiver Controls
... Low Pass filter is installed between the transmitter and the antenna to reduce harmonic emissions Band-Reject filter is connected to a TV receiver as the first step in trying to prevent RF overload from a nearby 2 meter transmitter Packet Radio Station > a transceiver and computer used for digital c ...
... Low Pass filter is installed between the transmitter and the antenna to reduce harmonic emissions Band-Reject filter is connected to a TV receiver as the first step in trying to prevent RF overload from a nearby 2 meter transmitter Packet Radio Station > a transceiver and computer used for digital c ...
Radio-controlled model
A radio-controlled model (or RC model) is a model that is steerable with the use of radio control. All types of vehicles imaginable have had RC systems installed in them, including cars, boats, planes, and even helicopters and scale railway locomotives.