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Questions on bandwidth of digital communincation channels
Problem 1:
A digital signaling system is required to operate at 9600 bps. If a signaling element encodes a 8-bit word, what is the minimum required bandwidth of the channel?
Problem 2:
A given modem represents eight bits with each signaling element. How many different signaling elements are required? What would be the minimum channel bandwidth required to support 56 kbps?
Problem 3:
Consider a communications channel with a passband of 1700 Hz to 15 kHz. A modem will be connected to this communications channel and the modem will operate with a signaling rate that is forty percent (.4) the maximum allowable signaling rate for this communications channel. The modem uses the modulation technique of 128-PSK. What is the data rate (in bits per second) of this modem?
The aim of this experiment is to develop a bipolar transistor amplifier with a voltage gain of minus 25. The amplifier must accept input signals from a source impedance of 1 kW and provide an undistorted output amplitude of 5 V when driving a 560..
Modify the state diagram branching conditions in the diagrams below as needed to ensure the sum and exclusion rules are obeyed in each case.
Briefly discuss the impact of electron energy, electron current and target on the Bremsstrahlung generated.
Give three advantages of a three-phase system over a single-phase system There are two basic three-phase connections, the wye connection and the delta connection. Draw a labelled diagram showing the wye connection
Assume that capacitor is completely discharged when t
This assignment contains electronics engineering questions like State the commonly found components of a SCADA (Supervisory control and data acquisition) system. and decribe the function of the HMI in a SCADA system.
Determine the energy uses on farms in middle east and determine whether or not it is better to use a stand alone system or a grid connected system for the application on farms.
What is the modulation used to transmit HDTV signals over the air in US terrestrial broadcasting? What is the transmitted bit rate and the compression method?
Calculating a DC Current through the telephone handset, A telephone handset has a resistance of 600 ohm. It is connected to the local telephone exchange at a distance of 5 km by a twisted pair that has a loop resistance of 200 ohm per km
What is the maximum symbol rate for this link and the number of bits per symbol? What format would you recommend for the transmitted current pulses on this baseband link?
Derive the expression for TRANSFER FUNCTION and write the expression for magnitude and phase of H(f).
You are required to determine that this next generation transmission system will require a spectral efficiency of 5 bits/sec per Hertz.
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