1. Why are guard bands used in FDM? 2. Distinguish between the two basic multiplexing techniques (FDM and TDM) using appropriate diagrams. 3. Assume that a voice channel occupies a bandwidth of 8 kHz. We need to multiplex 20 voice channels with guard bands of 500 Hz using FDM. Calculate the required bandwidth. 4. Why is statistical TDM more efficient than a synchronous TDM multiplexer? Why is the synchronization bit required in TDM? 1
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- A line has a signal-to-noise ratio of 1000 and a bandwidth of 4000 kHz. What is the maximum data rate supported by this line? If the bandwidth of the channel is 5 kbps, how long does it take to send a frame of 100,000 bits out of this device? What is the maximum data rate of a channel with a bandwidth of 200 kHz if we use four levels of digital signaling?Consider a geostationary satellite-based system. Earth stations are multiplexing digital information streams and they transmit them to the satellite. Due to the very long distance of the satellite is from the surface of Earth, you wish your earth station transmitters and the satellite transmitter to operate their amplifier at its maximum power output level. If you were the designer of the system, would you select to use Frequency Division Multiplexing (FDM) or Time Division Multiplexing (TDM)?Computer Science Calculate the length of cable through which a signal can be sent before its powerdecreases to half the original value. Do this for each of the media types aboveassuming that the attenuation in twisted pair cables is 6 dB/km, in coaxial cableis 1.5 dB/km and in optical fiber is 0.3 dB/km. Please show every step briefly.
- III. The figure below shows synchronous TDM, the data rate for each input connection is 1 Mbps. If 1 bit at a time is multiplexed, Find (a) the input bit duration, (b) the output bit duration, (c) the output bit rate, and (d) the output frame rate. ... 1 1 1 1 1 1 Mbps 0 0 0 0 0 1 Mbps Frames 01010001110100010101 ... MUX 1 0 1 0 1 1 Mbps *** 0 0 1 0 0 1 Mbps2. In FDM, if there are 8 input signals each requiring a bandwidth of 3 MHz, what is the minimum bandwidth required for the combined signal?We need to use Synchronous Time Division Multiplexing to combine 17 different channels, where 10 channels are each of 300 Kbps and 7 channels are each of 600 Kbps. A unit is 1 bit. Now, answer the following questions using multilevel TDM with no synchronization bit. Your answers must have units. i) What is the output frame duration? ii) What is the output frame rate? iii) What is the output bit rate?
- What is the maximum data rate of a channel with a bandwidth of 200 KHz if we use four levels of digital signaling. Select one: O a. 400 bps O b. 200 bps O c. 600 bps O d. 800 bps2. (a) In FDM, time synchronization is not necessary. Yes or No? Give proper reasons behind your answer. Write one example of TDM where extra information load (overhead) could be 300%.. (b) We need to use Time Division Multiplexing and combine 9 digital sources, each of 900 Kbps. Each output slot carries 9 bit from each digital source, but no extra bit is added to each frame for synchronization. Now, answer the following questions: i) What is the output frame duration? ii) What is the output frame rate? iii) What is the output bit rate? iv) What is the output bit duration? v) What is the size of an output frame in bits? vi) What is the input bit duration?Multiplexing is done with TDM, FDM, and CDM on the physical layer.What are the pros and cons of each approach?
- Five Channels each with a 100 KHz bandwidth are to be multiplexed together using Frequncy division multiplexing(FDM) scheme.What is the minimum bandwidth of the link if there is a need for a guard band of 10 Khz between the channel to prevent interference?Can I have a detailed, step-by-step explanation for the following question? Thank you very much! Four channels are multiplexed using TDM(Time-division multiplexing). If each channel sends 100 bytes/second and we multiplex 1 byte per channel. Find the; (i) Size and duration of the frame (ii) frame rate (iii) bit rate for the link5- A synchronous TDM with four 2 Mbps data stream inputs and one data stream output. The multiplexing unit of data is 1 bit. The input bit duration is the output bit duration is the output frame rate is ------- Frame/sec. otansmi Mbps; and us; the output bit rate is natos imeni adi stonl -.oi mibanaine 1. 1. ... 2 Mbps Be eill Frames ilsbit ... 0. 2 Mbps MUX 2 Mbps 1. 1. ... 2 Mbps .. 7- A de pulse train has a peak voltage value of 5 V, a frequency of 4 MHz, and a duty cycle of 30 percent. The minimum bandwidth necessary to pass this signal without excessive distortion is MHz. (Note: to =T*Duty Cycle; T= 1/F) 8- Ten channels, each with a 200 kHz bandwidth, are to be multiplexed together using FDM. The minimum bandwidth of the link is need for a guard band of 10 k Hz between the channels; while the minimum bandwidth of the link is 20 kHz between the channels. KHz when there is a KHz when there is a need for a guard band of 9. If a channel can transmit a range of frequencies from 10 MHz…