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?
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- 3. Some GPS receivers use 1 bit ADCS (Analog-to-digital Converters) to sample and quantize the signal i.e. the output of the ADC is simply 2 quantization levels: -1 or +1. This is typically done to save on power. (a) What is the quantization SNR? How does it compare to typical thermal noise SNR of a GPS signal before correlating with the CDMA code? (b) Justify, how come it is possible to sample the signal using a single bit and still get good performance.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.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)10
- Q2/ The information in an analog signal voltage waveform is to be transmitted over a PCM system with an accuracy of ±0.1% (full scale). The analog voltage waveform has a bandwidth of 100 Hz and an amplitude range of -10 to +10 volts. Find the minimum sampling rate required. i) ii) Find minimum bit rate required in the PCM signal. Find the number of bits in each PCM word. iii) iv) Find the minimum absolute channel bandwidth required for the transmission of the PCM signal.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 110100010101If you have a system with a quantizer of 8V & 4 bits resolution, show the following: 1. howmany levels are there in this quantizer. 2. The quantizer maximum errors. 3. The voltage values of each level 4. The code of the first and third levels 5. If the input signal of the system has the following frequency values (10 KHz ,100 KHz and 1000 Hz), what is the suitable sampling frequency?
- Question: 18 The time difference between the input signal crossing a 0.5VDD and the output signal crossing its 0.5 VDD when the output signal is changing from low to high is --- A. Propagation Delay low-to-high (Rise Propagation) B. Fall Transition Time C. Rise Transition Time D. Propagation delay high-to-low (Fall Propagation)See the figure below for Manchester scheme on CH-1 of Scope. Write the corresponding input bit stream. DE(8) A digital recording system samples cach of two stereo input signals with a 16bit ADC at 44.1k sample per second. (a) Determine the output peak SNR for a fl- scale sinusoid. (b) The bit stream of digitized data is augment by the addition of error-correcting, clock extraction, display and control bit fields. These additional bits represent 100 percent overhead. Determine the output bit rate of this system. (c) If we would like to store an hour's worth of music using this system, determine the memory size required. (d) for a comparison, a high-grade collegiate dictionary may contain 1500 pages, 2 columns per page, 100 lines per column, 8 words per line, 6 letters per word and 7 bits per letter (all on average). Determine the memory size required to store it. Solution: (a) SY R-101 Ldn
- (3) Five telemetry signals, each of bandwidth 1kHz, are to be transmitted simultaneously by binary PCM. The maximum tolerable error in sample amplitudes is 0.2% of the peak signal amplitude. The signals must be sampled at least 20% over the Nyquist rate. Framing and synchronizing require an additional 0.5% extra bits. Determine the minimum possible data rate that must be transmitted, and the minimum bandwidth required to transmit this signal.An analog signal is to be coded by an ADC. The signal contains significant frequencies up to 900Hz. If the system is operated at a bit rate of 180kbps and each input sample is quantized into 1024 levels, answer the following: a) What must be the minimum sampling frequency to avoid aliasing? samples/sec b) What is the Nyquist rate? c) What must be the number of bits per sample? kHz Hz bits d) If the sampling frequency is 10% above the Nyquist rate, what is the Nyquist frequency?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.