What is the theoretical capacity of a channel in each of the following cases: a. Bandwidth: 20 KHz SNRdB= 40 b. Bandwidth: 200 KHz SNRdB= 4 c. Bandwidth: 1 MHz SNRdB= 20
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(a) Consider a digital communication system with a frequency band ranging from 3 MHz to 4 MHz. It is required to operate without unacceptable bit errors for which let the required SNR min = 24dB. Compute the channel transmission capacity for this minimum value of SNR. (b) Let us consider a Nyquist channel capacity formula C = 2B log2 (M) (in bits/second) where M is the number of signal levels per second, and B is the bandwidth assumed in part...
A GSM-900 band use uplink (UL) frequencies from 890-915 MHz and downlink (DL) frequencies from 935-960 MHz. Each GSM channel offer 200 KHz bandwidth per channel. How many duplex GSM channels are possible?
A TDMA system has a 2.5 MHz bandwidth with single channels of 25 kHz bandwidth each, with each frequency channel containing 4 TDMA conversation channels. If each user is assigned 1 transmit and 1 receive slot within each frequency channel, how many users can this system support?
A 1.5 MHz carrier frequency is amplitude-modulated by a 200 kHz sinewave audio signal. The bandwidth would be A. 40 kHz. B. 405 kHz. C. 4,000 kHz. D. 400 kHz.
What is the channel capacity if you have 16 signal levels and the bandwidth is 8 KHz? Show work!!!
COMPUTER NETWORKS What is the channel capacity if you have 16 signal levels and the bandwidth is 8 KHz? What is the wavelength if the speed/velocity of the wave is 100 m/s and frequency is 200Hz ? What is the frequency of the period is 4 s ?
3. (a) What is noise, noise voltage and noise power due to a resistor and why understanding and controlling of noise is critical in telecom signal transmission? Estimate the noise voltage and noise power generated by a 1 MO resistor at RT 40 °C if BW is 18 MHz. Is this noise significant? [Hint: en V 4kT (Bw)R, Pn kT (BW), k 1.38x102 [10] (b) Define channel capacity C and explain how it is affected by the S/N ratio. The...
A wireless LAN channels used by Wi-Fi 802.11n in the US for the 2.4GHz ISM band in which each channel has a bandwidth of 40 MHz. Suppose a channel's signal-to-noise ratio SNR = 350. Answer each of the questions: 1) Calculate the channel's signal-to-noise ratio in decibels, SNR db. 2) Calculate the (maximum) channel capacity according to the Shannon Capacity Formula, assuming the channel's signal to noise ratio SNR = 350.
Consider a point-to-point channel. Assume the bandwidth of the channel is 5 MHz and the signal-to-noise ratio of this channel is 24 dB. a) What is the capacity of this channel? b) How many signal levels are required to achieve the above maximum transmission rate?
Assignment 2. Multiple choice assignment. Check the right answer. 5 points each answer 1. The USA FM radio broadcasting utilizes the frequency band A. 0.665 MHz-1.6 MHz B. 80 MHz - 100 MHz C. 88 MHz 108 MHz 2. The pre-emphasis is generally used A. to improve the demodulator performance in the presence of noise in the received signal B. to improve the modulator performance C. to improve the stereophonic effect 3. The intermediate frequency of FM superheterodyne receiver is...