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A binary data stream of 4 digits [1011] is spread using an 8-chip code sequence C(t)= [01 10 10 01]. The spread data phase modulates a carrier using binary phase shift keying. The transmitted spread-spectrum signal is exposed to interference from a tone at the carrier frequency but with 30 degrees phase shift. The receiver generates an in-phase copy of the code sequence and a coherent carrier from a local oscillator.
i. Determine the baseband transmitted signal.ii. Express the signal received. Ignore the background noise.iii. Assuming negligible noise, determine the detected signal at the output of the receiver.
A computer has a word length of 8 bits (including) sign. If2's complement is used to represent negative numbers, what range of integers can be stored in the computer If 1's complement is used
how would i convert multisim a circuit that will convert that 0-10vdc signal into a 4-20ma signal for the long haul.
Can we build a bandpass filter using a low pass and a high pass filter combination. If your answer is yes, then how should the cut off frequencies be arranged. Illustrate your answer with a simple example.
A box contains balls that are identical except for color. Initially the box contains three blue and two green balls. A ball is drawn at random from the box and its color is observed. This first ball is then put back in the box, and then four balls..
What are the incremental savings that result from increasing the efficiency of a PV collector by 1% in terms of collector area and costs? Assume that the PV module represents about 50% of the total PV system cost.
A receiver produces a noise power of 200 mW with no signal. The output level increases to 5 W when a signal is applied. Calculate the signal-to-noise ratio as a power ratio and in decibels.
An inductance of 8 mH is combined in parallel with a capacitance of 1.5 µF. What is the characteristic frequency (Hz) (not radian frequency) of the combination
The sensing line to the top of the tank is filled with cold water having a density of 990 kg/m3. When the level is at the bottom of the tank, the transducer reads -58.8 kPa (upper sensing line connection at a higher pressure than the lower sensing..
An isolated Free electron is traveling through an electric field from some initial point, where its coulombic potential energy per unit charge(voltage) is 17 KJ/C and velocity = 93 Mm/s to some final point where its coulombic potential energy per ..
Which requires more harmonics to accurately model it (triangle, square, and sawtooth) and why?
A 2000kW synchronous motor operates at a three - phase line-to-line voltage of 4kV. It has a synchronous reactance of 4 ohms per phase. Calculate a) The nominal full load current of the machine when the excitation voltage E0 ( line - to-line) is 4k..
obtain, via the bilinear transform, the coefficients of a digtal filter that is maximally flat in the passband, 0 to 4 kHz, and has an attenuation of at least 25 dB at frequencies over 10 kHz. Assume a sampling frequency of 32 kHz.
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