channels, each with a l00 kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10kHz between the channels to prevent interference?
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Five channels, each with a l00 kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10kHz between the channels to prevent interference?
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- Eight channels, each with a 4 KHz bandwidth are to be multiplexed together. What is the minimum bandwidth of the link if there is need for a guard band of 500 Hz between the channels to prevent interference ?Five channels, each with a l0a-kHz bandwidth, are to be multiplexed together. What is the minimum bandwidth of the link if there is a need for a guard band of 10kHz between the channels to prevent interference?Five Channels each with a 100 KHz bandwidth are to be multiplexed together using Frequncy division multiplexing(FDM) scheme.What is the minimum bandwidth of the link if there is a need for a guard band of 10 Khz between the channel to prevent interference?
- In ADSL, the OFDM symbol rate across all subcarriers is 4000 symbols per second. Assume that in the downstream direction, 25 subcarriers use 1024-QAM, 50 use 256-QAM, 100 use 64-QAM and 100 use 16-QAM. What is the overall bit rateA channel has a bit rate of 4 kbps and one-way propagation delay of 20 ms. The channel uses stop and wait protocol. The transmission time of the acknowledgement frame is negligible. To get a channel efficiency of at least 50%, the minimum frame size should beGiven a channel with an intended capacity of 20 Mbps, the bandwidth of the channel is 3 MHz. what signal-to-noise ratio is required to achieve this capacity?
- What is the propagation delay on a circuit using a LEO satellite orbiting 500 miles above the earth if the speed of the signal is 186,000 miles per second? If the satellite is 22,000 miles above the earth?QUESTION 25 A microwave data link has been designed to operate at 110,000 symbols per second while encoding 14 bits per symbol. The receiving equipment requires at least a 50 dB signal to noise ratio in order to operate without significant error. At least 55 kHz of bandwidth on the transmission channel are required for the attempted system. The data rate of the designed link will be 1.54 Mbps. If the actual signal to noise ratio is 100 dB, the system could support encoding as many as 17 bits per symbol. There is not enough information given to determine the minimum transmission power needed to make sure an acceptable power level arrives at the receiver. Exactly 16,348 different symbols would be needed to support 17 bits per symbol. If the background noise at the receiver is -50 dBm, the receive power will need to be at least 1 dBm.A BCD code is being transmitted to a remote receiver. The bits are A3, A2, A1, and A0, with A3 as the MSB. The receiver circuitry includes a BCD error detector circuit that examines the received code to see if it is a legal BCD code (i.e., =1001). Design this circuit to produce a HIGH for any error condition
- if you are given alow-pass channel that ends at 40MHz and you knew that the SNR for this channel is 255, then the maximum number of signal levels to be used over this particular channel equal?Suppose that the spectrum of a channel is 2 MHz, and an intended capacity is of 8 Mbps, then the SNR is .............. in order to obtain this capacity 8 04 O 15 O 17 O 16A voice channel occupies a bandwidth of 28 kHz 10 voice channels are to be multiplexed together using the FDM (Frequency Division Multiplexing) technique, considering a guard band of 12 kHz. Illustrate the configuration of the multiplexing and demultiplexing using the frequency domain with proper labeling.