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 digital signal has a baud rate of 20K levels/sec. What is the baud interval? A device sends data at 200K baud using 8 bits per level. How many bits per second does the device send?
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...