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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?
Laplace transform of a pulse, Consider computing the Laplace transform of a pulse: use the integral formula to find P(s)
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?
A radio receiver for the HF band covers the frequency range 2 MHz to 30 MHz. The first IF frequency is 3.0 MHz and the local oscillator is above the received signal frequency.
Efficiency of MOSFET circuit provide in datasheets of any product is measured at transient state of my output node or staedy state?
The magnetic tape recorder uses linear analog to digital encoding. Telephone systems use non linear analog to digital conversion. Explain the difference.
Eigenfunctions and LTI systems, The eigenfunction property is only valid for LTI systems. Consider the cases of nonlinear and of time varying systems.
Briefly explain your ideal job as electrical engineer? Why did you select this career? What goals do you have in this career? How do you plan to get these goals?
Shielding Effectiveness with copper and steel at equality, Determine the frequency at which two 1 mm thick shields, one made of copper and the other of steel
The location of the zeroes in the spectrum suddenly changes to 5 kHz, 10 kHz, 15 kHz.... What parameter of the rectangular pulses has changed and what is its new value?
The paper includes Lithium ion battery technology with its advantages and disadvantages. The paper discusses about the Lithium air battery in which detailed reactions of Lithium with air including nonaqueous as well as aqueous are given.
Determine power series values for common scientific and engineering functions and Obtain the Maclaurin series for the following functions. State the values of the x which the series converge.
A terrestrial radio link transmits a CDMA signal from a base station using a spreading code with a chip rate of 1.0 Mchips per seconds. The message data rate of the signal is 10 kbps.
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