Define electrical noise and explain why it is so troublesome to a communications receiver.
Define electrical noise and explain why it is so troublesome to a communications receiver.
3. (a) What is noise, noise voltage and noise power due to a resistor and why understanding and controlling of noise is critical in telecom signal transmission? Estimate the noise voltage and noise power generated by a 1 MO resistor at RT 40 °C if BW is 18 MHz. Is this noise significant? [Hint: en V 4kT (Bw)R, Pn kT (BW), k 1.38x102 [10] (b) Define channel capacity C and explain how it is affected by the S/N ratio. The...
Q1)In your own words, define and briefly explain Data Communications. Also, name the five main components of Data Communications. Q2)In your own words, write a short note about the TCP/IP PROTOCOL SUITE and what is the difference between TCP/IP and OSI Model? Q3)Noise is one of the causes of transmission impairment. Different types of noise can affect the transmission of the signals. Briefly List and define TWO of those types in your own words. Q4)Using your own words, explain the...
Problem 3 A receiver has a bandwidth of 1 MHz and a noise figure of 10 dB. The receiver sensitivity is -90 dBm. The Boltzmann constant is k=1.38x10-23 Joule/deg K, and the room temperature is 300 deg Kelvin. a) What is the ratio of the SNR at the input to the receiver (computed over the bandwidth of interest) to the SNR at the output of the receiver? b) What is the noise power at output of the receiver? c) Find...
define economies of scale. Explain why economies of scale are so important.
Question 1 (50pts): We have AM modulation and FM modulation for radio transceiver/receiver systems. Can we use pulse width modulation for a radio transceiver/receiver system? Explain why or why not Question 1 (50pts): We have AM modulation and FM modulation for radio transceiver/receiver systems. Can we use pulse width modulation for a radio transceiver/receiver system? Explain why or why not
Question: Explain why the square and circle shapes cells for cellular communications are not appropriate as compared to hexagonal shape cells
(TCD) including a schematic diagram. Which carrier gases are the most suitable for TCD. Explain why? Define the factors affecting band spreading using the Van Deemter3 equation Why is derivatization performed in gas chromatography. Describe 3 one derivatization reaction What is end-capping. Why is it used in liquid chromatography What is the signal noise ratio? What values are appropriate for (A) qualitative analysis (B) quantitative analysis? Q2(a) 3 (iv) (TCD) including a schematic diagram. Which carrier gases are the most...
6. Define "health communication." How does the health communications definition work with our concept of "population health"? Are they connected? Why or why not? (10 points)
resistor? 4. Explain why the differential signaling used in the CAN bus is more resistant to problems with the electrical noise in a car than the single-ended signaling used by the other buses.
What is "efficiency" in general? Consider a turbine and an electrical generator. Define turbine efficiency, generator efficiency and combined efficiency. Both turbine and generator suffer losses. Explain where these losses originate. What is "efficiency" in general? Consider a turbine and an electrical generator. Define turbine efficiency, generator efficiency and combined efficiency. Both turbine and generator suffer losses. Explain where these losses originate.