A Telecommunication channel in form of a copper cable has 4 kHz bandwidth. Calculate the amount of data rate that can be transmitted through this channel if binary signaling is used with raised-cosine pulses and 0.5 roll-off factor.
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- For simplicity, let's assume that a voice channel has an 8-kilohertz bandwidth. It is necessary to multiplex ten voice channels with guard bands of 1000 Hz using frequency division multiplexing (FDM). Calculate the amount of available bandwidth.A telephone modem is used to connect a personal computer to a host computer. The speed of the modem is 56 kbps, the one-way propagation delay is 100 ms, the packet size is 256 bytes, and the probability of an error in a packet is 10^-4. Find the efficiency of stop-and-wait ARQ. What window size N is needed to keep the channel busy when there are no transmission errors. For this window size finds the efficiency of the go-back-N and selective repeat protocols. Note: Correct and detailed answer will be Upvoted else downvotedIn the communication in the figureFor Link 1; Bandwidth 150 Mbps Line Length 5 km For Link 2; Bandwidth 50 Mbps Line Length 2000 km For Link 3; Bandwidth 1000 Mbps Line Length 1 km For 4000 bit packet length and the case where fiber optic and light speed of all connections are 3x10^8 m / sec; Question 2. Assuming there are no queue and processing delays, calculate the end-to-end delay in milliseconds.
- A fiber optic cable has a loss of 16 dB per kilometer. What would be its attenuation if the cable is 2,000 feet long?700 voice messages work in the range of (3 to 6) kHz and 10 video signals are to be combined for 8-bit PCM system. Find the commutators speed to support required TDM multiplex of these two types’ signals keep that bandwidth of video signal is 2.1 MHz. * 1 rb1= 31.6 Mbps, rb2=367.6 Mbps. 2 rb1= 32.6 Mbps, rb2=368.6 Mbps. 3 rb1= 35.6 Mbps, rb2=365.6 Mbps. 4 rb1= 36.6 Mbps, rb2=364.6 Mbps. 5 rb1= 34.6 Mbps, rb2=366.6 Mbps. 6 rb1= 33.6 Mbps, rb2=369.6 Mbps. 7 rb1= 37.6 Mbps, rb2=363.6 Mbps.Data Communication & Computer Network Suppose that Jon's and Jenny's computers are connected by an 8 Kbps link (note, 1 Kbps = 103 bps) that uses circuit switching and that Jon sent some number of bits to Jenny over the link. Suppose that circuit switching on the link connecting Jon’s and Jenny’s computers is implemented using Time Division Multiplexing (TDM), that a frame is 1 sec in duration, and that a frame consists of 16 slots. Jon is assigned one slot in every frame. Considering that it took 12 minutes for Jon to send all bits to Jenny, find how many bits were sent by Jon to Jenny.
- Consider a communication channel with bandwidth B = 8000 Hz. Suppose the channel has a signal-to-noise ratio S/N = 541. What is the maximum data rate of this channel? ? What is the minimum number of signal levels needed to achieve a data rate of 64000 bps?Suppose, you have to send a message through a wired transmission medium. Message is 9 a & a) Show the conversion of the digital data to digital signals using Differential Manchester, 2B1Q, MLT-3 schemes. Mention conditions & transition table.For data is transmitted over twisted-pair cable, you have these characteristics: A signal's power on the channel is 60 dB, signal attenuation is 2 dB per 100 meters, and average noise power on the cable is 0.15 dB per meter. Answer the following questions: What's the S/N ratio at the end of a 60-meter channel? What's the S/N ratio at the end of a 1.5-kilometer channel? What's the maximum channel length if the receiving device requires at least 25 dB of S/N ratio for reliable operation?
- 3. The data rate (in each direction) necessary for a digitized telephone call is 8 Kbps. This means that a two-way full-duplex call between two parties takes 16Kbps. How many calls can be made concurrently with the data rate necessary to transport just one HDTV channel?Consider a channel with a 1 MHz capacity and an SNR of 63.a. What is the upper limit to the data rate that the channel can carry?b. The result of part (a) is the upper limit. However, as a practical matter, bettererror performance will be achieved at a lower data rate. Assume we choose a datarate of 2/3 as the maximum theoretical limit. How many signal levels are neededto achieve this data rate?A digitized voice channel is made by digitizing a 4-kHz bandwidthanalog voice signal. We need to sample the signal at twice the highestfrequency. We assume that each sample requires 16 bits. What is therequired bit rate?