The figure below illustrates an asynchronous transmission in the formof short blocks. Each data bit is of 9.06 ms duration, start bit duration is0.04ms more than a data bit duration, and each stop bit duration isdouble the duration of a start bit . Determine the bit rate and baud rateof the transmission.Data BitsStopBitsStartBit1 101 0 10 010 1Line is quiet!Direction of DataData: 0100 1010

Given, data: 01001010, start bit: 1, stop bit: 11. Formula for bit rate: bit_rate = 1 /…

Answered: The figure below illustrates an…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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4. Suppose two users in a Direct Sequence-CDMA system have signatures (that is, sequences of chips) given by (1 -1 1-1) and (1 1 -1 -1), respectively. (a) Evaluate the correlation between the two signatures. (b) Sketch the baseband signals for the two users when user 1 sends the bits 011, and user 2 sends the bits 101. Add the signals for the first bit only, and show that the output of the correlator for user 1 is -4, and the output of the correlator for user 2 is 4. Note that if the output of the correlator is negative, then the detected bit is a 0, and if the output is positive, the detected bit is a 1.
Taking the speed of the radio signal as 3x10° meters per second, calculate the time taken for a signal to reach a GPS receiver from a GPS satellite at a position 23500 km distant from the receiver. Assume that the speed of the signal is unchanged over the whole path length. Express your answer in milliseconds.
How many characters per second can be transmitted over a 9600-baud line in each of the following modes? (Assume a character code of eight bits.) a)Synchronous serial transmission. Also draw timing diagram. b)Asynchronous serial transmission with two stop bits. Draw timing diagram c)Asynchronous serial transmission with one stop bit. Draw timing diagram.
Unless specified otherwise, use the free space propagation speed of light 3x108 m/s to calculate the propagation delay. For numerical calculations, the results must show the appropriate unit. Show a complete solution for each problem3. Consider a digital multimedia transmission system. Separate audio and video coders are used to encode these signals. Audio and video bits are packed in packets together and transmitted over a transmission link. Each packet is 2,000 bytes long, which includes a 48-byte header. The system generates one packet every 40 ms. Calculate the following values:a. The minimum data transmission rate required to support the above system.b. The minimum signal-to-noise ratio (SNR) in dB required to transmit the above audio and video information. Assume a 400-kHz transmission channel bandwidth is used.c. The end-to-end packet delay over a 50-km link, using answer in Part a).
Given are the following codewords for an error control coding scheme data 000 011 100 codeword 00011000 00000111 10101000 . a.What is the minimum Hamming distance? b. What is the coding rate for this scheme? c. what raw data rate would be required if we need a throughput of 6 Mpbs? d. in a different situation, the number of data bits to transfer is 5, and the minimum hamming distance is dmin=5. find the maximum coding rate for this situation
J 6
Q8/ The required bandwidth (BW) according to FM modulation, when a 100 MHz carrier is modulated with a sinusoidal signal at 5 KHz, the maximum frequency deviation (Af) being 8KHz a) BW = 8 KHz Ob) BW = 50 KHz c) BW= 102 KHz Od) BW = 26 KHz
6a
Take the 127-bit binary BCH code with a 6-bit target distance and the 128-bit binary field extension F 128. How large is the code, and is there a minimum distance you can guarantee?
When calculating error detection code FCS, you may use a technique called cyclic redundancy checking (CRC). What is the preset divisor P's length in bits for a 16-bit bit block with a total of 20 bits (total length of bit block and FCS combined)?
Q15/ Channel 1 of Six channels PAM system handles 1KHZ signal. Channel 2 handles 2 KHz signals, channel 3 handles 3 KHz, channel 4 handles 6 KHz and channel 5 handles 6 KHz and channel 6 handles 25 KHz. The six channels are sampled at equal intervals of time using very narrow pulses at the lowest frequency that is theoretical adequate. The sampled signals are time multiplexed and passed through a LPF before transmission. a. What is the minimum clock frequency of the PAM system? b. Find Tx and Bx? c. What is the minimum cut off frequency of LPF used before transmission that will preserve the amplitude information on the output pulses? d. What would be the minimum bandwidth if these channels were frequency multiplexed, using AM technique and SSB technique?
55. Suppose a digitized voice channel is made by digitizing 8 kHz bandwidth analog voice signal. It is required to sample the signal at twice the highest frequency (two samples per hertz). What is the bit rate required, if it is assumed that each sample requires 8 bits? a. 32 kbps b. 64 kbps c. 128 kbps d. 256 kbps

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