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For more course tutorials visitnuophelp.com is now newtonhelp.comnwww.newtonhelp.comnnECET 310 Week 1 Homework 1_1nECET 310 Week 1 Homework 1_2nECET 310 Week 2 Assignment Homework 2_1nECET 310 Week 2 Assignment Homework 2_3nECET 310 Week 3 Assignment Homework 3_1nECET 310 Week 3 Assignment Homework 3_2n

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## ECET 310 Seek Your Dream /newtonhelp.com

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### ECET 310 Entire Course

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ECET 310 Week 1 Homework 1_1

ECET 310 Week 1 Homework 1_2

ECET 310 Week 2 Assignment Homework 2_1

ECET 310 Week 2 Assignment Homework 2_3

ECET 310 Week 3 Assignment Homework 3_1

ECET 310 Week 3 Assignment Homework 3_2

ECET 310 Week 5 Assignment Homework 5_1

ECET 310 Week 7 Homework 7_1

### ECET 310 Week 1 Homework 1_1

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. Computer Science - General Computer Science

(a)  60 dB  +  25 dB=

(b)  20 dBW +  5 dBW=

(c)  22 dB  -  4 dB=

2.  Convert:

(a)  65 W  into  dB =

(b)  10 dB  into  watts

(c)  – 5 dB  into watts= .

(d)  –30 dBm  into  dBrn =

### ECET 310 Week 1 Homework 1_2

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1 . Four frequencies are applied at the input of a non-linear amplifier. Write down all of the frequency components at the output of the non-linear device.  Write down only the first three harmonics.

2. Find out the frequency components at the output of a resonant-tuned circuit tuned at 1200 KHz with a bandwidth of 15 KHz and connected at the output of a non-linear amplifier (mixer).

### ECET 310 Week 2 Assignment Homework 2_1

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.  Assume that a receiver has a first amplifier stage with a 5KW input resistance, a gain of 300, an input audio signal of 20 mV, and an operating temperature of 27oC. When the amplifier is operating with a bandwidth first of 10 MHz, find

(a)  therms input noise levels

(b)  the audio output levels

the rms output noise levels

2.  We have an amplifier with a 1 MHz bandwidth and a 20 mV input signal. The input mV, output mV, and output mV.

### ECET 310 Week 2 Assignment Homework 2_2

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1.   fCUTOFF = 130 KHz

Sec            T = 25

Draw the frequency spectrum of the output of the low pass filter.

2. Draw the frequency spectrum of the output if the filter is:                        14 marks

A high pass filter                               fC            =             20 KHz

### ECET 310 Week 2 Assignment Homework 2_3

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1.  The bandwidth of a series resonant circuit is 400 Hz.

(a)  If the resonant frequency is 4000 Hz, find Q.

(b)  If Ω, what is the value of XL at resonance?

Find the inductance L and capacitance C of the circuit.=

### ECET 310 Week 3 Assignment Homework 3_1

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1.  An AM signal has an unmodulated carrier voltage VC  =  10VP, a load resistance of  RL = 10, and a modulation index of  m  =  1. Determine:

Modulation

(a)  PC  = Vc2/2/2(10)=

PSB  =PT-PC/2=

(b)  Total power in the AM signal

### ECET 310 Week 3 Assignment Homework 3_2

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1. Draw the frequency spectrum at the output of the first balanced modulator.

2. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and amplifier

3. Draw the frequency spectrum at the output of the second balanced modulator.

4. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and linear power amplifier

### ECET 310 Week 4 Assignment Homework 4_1

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1.         Define FM.

2.         What parameter of the intelligence signal causes frequency deviation of the carrier?

3.         What parameter of the intelligence signal causes or determines the rate of carrier frequency deviation?

4.         Define modulation index for FM.

5.         What is the reason that FM requires wider bandwidth as compared to AM?

### ECET 310 Week 5 Assignment Homework 5_1

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1.  Determine the Nyquist sample rate for a maximum analog input frequency of:

(a)  4 KHz

10 KHz

2. Determine the dynamic range for a 10-bit sign-magnitude PCM code.

3. Determine the minimum number of bits required in a PCM code for a dynamic range of 80 dB. What is the coding efficiency?

### ECET 310 Week 6 Assignment Homework 6_1

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1.            For a 64-PSK modulator with an input data rate(fb) equal to 36 Mbps and a carrier frequency of 100 MHz, determine the minimum double-sided Nyquist bandwidth(fN) and the baud. Sketch the output spectrum.

2.            Determine the bandwidth efficiency for the following modulators:

(a)                QPSK     =

(b)               64-QPSK =

(c)                128-QAM=

### ECET 310 Week 7 Homework 7_1

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1. For a QPSK system and the given parameters, determine

2. Which system requires the highest Eb/No ratio for a probability of error of 10-7, four-level QAM or 8-PSK system?

3. Determine the minimum bandwidth required to achieve a P(e) of 10-4  for a 16-PSK system operating at 25 Mbps with a carrier-to-noise ratio of 10 dB

4. A PCM-TDM system multiplexes 32 voice channels each with a bandwidth of 0 Khz to 4 KHz. Each sample is encoded with an 8-bit PCM code. UPNRZ encoding is used. Determine: