2. Suppose, BanglaLink has 4 voice channels, each of 60Mbps. They use synchronous TDM to multiplex these channels. If 3 characters at a time are multiplexed (3 characters in each output slot), Draw the first two output frames with arbitrary inputs. II. I. What is the size of an output frame in bits? What is the output frame rate? IV. III. What is the duration of an output frame?
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- a) i) Determine the number of bits per level required when using FSK with 4 different frequencies and QAM with a constellation of 256 points. ii) We want to digitise a signal that contains frequencies between 100 Hz and 1500 Hz, assuming 16 bits per sample. The digitised signal will be transmitted using a QPSK process. Determine the bit rate and the level rate. iii) We need to send 210,000 bits per second over a noiseless channel using 128- QAM. Determine the required bandwidth.Question 2: Eight sources, each with a bit rate of 1000 kbps are to be combined using synchronous TDM. Each output slot carries 1 bit from each source. Answer the following questions a. What is the size of an output frame in bits? b. What is the duration of an input slot? c. What is the duration of an output slot?| d. What is the output frame rate? e. What is the data rate of the multiplexed path?Most Digital transmission are "self-clocking " in that they derive the bit synchronization from the signal itself. To do this, the system use the transitions between positive and negative voltage levels. These transition help define the boundaries of the bit intervals. a) Plot the NRZ-L signal for the data stream 4 bits of 1s followed by 4 bits of Os. Explain why this code has a synchronization problem? b) Repeat part ) for Manchester encoding scheme and explain how the synchronization problem has been addressed.
- Perform the following functions:a. What will be the parity of the data signal to send as even parity:10111010101(0110)BCD = (---?---)2 = (---?---)Excess-3 = (---?---)Grayb. How to represent following numbers in signed representation:1. (-25)102. (-63)10Consider there is a recording session to capture animal sounds in a particular region using a 3-bit ADC. i. Determine the value of maximum voltage zone number the ADC can have. ii. If the signal amplitude range is 0 V to 4 V, determine the resolution of the ADC. iii. If the measured voltage is 3.5 V find the voltage zone which belongs this voltage and determine its binary code word. קיConsider the data sequence 10000011000010 Encode the sequence using HDB3. A digital link uses a channel that can convey frequency from dc to B Hz. Suppose the line coding NRZ Polar is used to send a maximum data rate of 100 Mbits/s using raised cosine pulse with roll-factor a = 0.6. (i) What is the symbol rate of the code? (ii) What is the minimum value of B?
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- Answer all questions below: 1. Draw the general block diagram of Frequency Division Multiplexing (FDM) 2. Multiplexing is a technique that allows the (simultaneous) transmission of multiple signals across a single data link. Figure Q2 below shows a multiplexer with four 500 kbps data stream inputs and 1 data stream output where the unit of data is 1 bit. Determine: i. ii. iii. 500 kbps The type of multiplexing technique used. The input bit duration. The output bit rate. 500 kbps 500 kbps. 500 kbps. ... ... ... 1 0 1 0 1 0 1 0 0000 1 1 1 1 0 1 0 0 MUX Figure Q2 Frames 0101 0001 110100010101Assume the channel bandwidth is 3100 Hz and the maximum data rate is 35 kb/s. To improve the maximum data rate by 60%, how many times should the signal-to-noise-rate (SNR) increase? Based on the improved maximum data rate and SNR, if the SNR further increases by 10 times, can the maximum data rate further increase by 20%?Write VHDL code for a modulo-13 counter (counting sequence is 010, 110, …. 1210). The counter has the following features: a synchronous Active High Reset a value R can be loaded into the counter, using the signal Ld (Load) The signal Ld is active High Draw the schematic of your counter, showing the inputs and outputs. Show the number of bits for R, Q (output of the counter), Ld.