in digital communication system using 8psk the data rate is 6 Mbits/s, a) what is the...
A certain digital communication system uses 4-ary ASK to send data at a rate of 4 Mbits/s with symbol amplitudes -3,-1, +1, +3. If the four symbol amplitude values are equally likely, each with a chance of I 1n 4. a) Determine the peak power. b) Determine the average power. 4. Answer: (a) w,(b) Pave 2.5 w
Q1 Marks: 40 A digital communication system has 96 analog telephone signals, each band limited to 4 kHz. The telephone signals are converted to digital binary data using Pulse Code Modulator (PCM) system, which use a uniform quantiser followed by an 8-bit encoder. The system uses two bits for synchronization. The digital binary data are then time-division multiplexed and transmitted over a single communication channel. Analyse the communication system by considering the following principles: (i) Determine the number of quantization...
3.8. (a) What is the theoretical minimum system bandwidth needed for a 10-Mbits/s signal using 16-level PAM without ISI? (b) How large can the filter roll-off factor be if the allowable system bandwidth is 1.375 MHz?
For a digital communication system, (i) if the energy per bit is 12 dB and the noise level is 8 dB, what is the spectral efficiency? (ii) If the channel bandwidth increases, what will happen to the spectral efficiency and Eb/N0. (iii) In a binary communication system with an asymmetric transmitter, bits 0 and 1 are generated with 0.4 and 0.6 probabilities respectively. The receiver receives th e bit stream of data through a noisy channel with the noise mean...
CONFIDENTIAL b) Ampltue-it keying (ASK) is a form of umgolitude modalacion that repmosents digital data modulator as follow: maoin the anplitiade af a earer wewe Oiven the deals of se hu rate: 20900 bitse Determine ) The minim bandwidth of the ASK n) The baud rate of the system. ???) Sketch the output tor the digital syslem if 1011 0011 0110 binary wqurnce is to be 5 Marks) ico, P02, C4] transmited wirelessly
For a digital communication system, (i) if the energy per bit is 12 dB and the noise level is 8 dB, what is the spectral efficiency? (ii) If the channel bandwidth increases, what will happen to the spectral efficiency and Eb/N0. (iii) In a binary communication system with an asymmetric transmitter, bits 0 and 1 are generated with 0.4 and 0.6 probabilities respectively. The receiver receives the bit stream of data through a noisy channel with the noise mean of...
Digital Communication System
t (Question# 3]. For the 1st order 10 wpass filter with frequency response H(f) 1-Rr/RC, with 1+2nfRC RC 0.1ms. S (a) Obtain the three dB cutoff frequency. (b) Obtain the noise equivalent bandwidth.
b) A digital cellular telephone system is required to work at a bandwidth efficiency of 5 bits/second/Hz in order to accommodate sufficient users to make it profitable. What is the minimum signal to noise ratio per bit (E,/No) that must be (4) planned for in order to ensure that users on the edge of the coverage area receive error-free communication? If we wish to maintain the bandwidth efficiency and double the data rate in the system, what would be the...
A common measure of transmission for digital data is the baud rate, defined as the number of bits transmitted per second. Generally, packet transmission consists of a start bit, a byte of information, and a stop bit. How long would it take to transmit a 5"x7" picture with a resolution of 300 pixels/inch with 256 levels per pixel and a compression ratio of 2.625 using a: 1. 2. 3. 4. 9.6K baud modem-released in 1984? 56K baud modem - released...
Digital Communication (ELEC 20004)-Spring-19-cW1 (ASSMNT)-All AK 1. a. A waveform m() -62 sin (3500t+)+36 sin(4500t5 is to be uniformly sampled for digital transmission. i. Determine the sampling frequency that satisfies the Nyquist criteria, and hence (7 Marks) determine the period of the signal ii. If we want to reproduce 55 minutes of this wave form, determine the how many (8 Marks) b. The output of a digital computer is at a rate of 64 kbps. If the roll off factors...