A channel has a bit rate of 4 kbps and a propagation delay of 20 msec. For of frame sizes does stop-and-wait given an efficiency of at least what range 50 percent?
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- A channel has a bit rate of 4 kbps and a propagation delay of 20 msec For what range of frame sizes does stop-and-wait given an efficiency of at least 50 percent?Consider a communication channel with bandwidth B = 8000 Hz. Suppose the channel has a signal-to-noise ratio S/N = 541. What is the maximum data rate of this channel? ? What is the minimum number of signal levels needed to achieve a data rate of 64000 bps?Calculate the minimum timeout value for a stop-and-wait algorithm running over a 50-meter point-to-point copper link. Assume a minimum delay of 5 µs at the receiver. If you know the distance between two points, you can calculate the speed-of-light latency, although you have to be careful because light travels across different media at different speeds: It travels at 3.0 × 108 m/s in a vacuum, 2.3 × 108 m/s in a copper cable, and 2.0 × 108 m/s in an optical fiber.
- A 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 beA channel has a bit rate of 8 kbps and one-way propagation delay of 30 ms. The channel uses Stop and wait protocol. The transmission time of the acknowledgment frame is negligible. To get a channel efficiency of at least 60%, the minimum frame size should be byte.Using Shannon’s noisy theorem, what bandwidth is necessary to support a 1 Gbps, assuming a signal-to-noise ratio of 40 decibels? Suppose you want to achieve a bit rate of 15 Gbps using a maximum bandwidth of 900 MHz. What is the minimum allowable signal-to-noise ratio in decibels?
- Given a home wireless IEEE 802.11AC Wi-Fi channel with a bandwidth of 80 MHz, a) Apply the real time streaming transmission of a video that samples at 40 frames/second and each frame has a resolution of 800x600 pixels. Each pixel has its colour presented in 16 bits. Calculate the required transmission rate. b) If the Wi-Fi Channel is very noisy with an acceptable Signal-to-Noise Ratio of 10dB, does the video streaming in part (a) still possible without any distortion? (provide workings)Assume having a low-pass noiseless channel that spans from a Frequency of 0Hz to 130Hz, to send at a bit-rate value that is not less than 1Kbps, then you would at least need ................. signal levels.Computer Science A Go-Back-N (GBN) ARQ scheme has been designed with window-size W = 10 such that it is fully efficient when there are no errors on the channel. Assume that frame size is 20000 bits and the overhead bits are negligible. What is the bit probability error (as seen at Layer 2) that makes the Go-Back-N ARQ 50% efficient?
- Data communication Suppose that the spectrum of a channel is between 8 MHz and 10 MHz, and the intended capacity is 8 Mbps. a. What should be the signal-to-noise ratio (SNR) to obtain this capacity? Constant values= c=3x^10°m/s, k=1,38x^10231/K IFour channels are multiplexed using synchronous TDM. The rate of each channel is given by 500 kbps and we use 2-bit units, provide a step-by-step calculation for the following: 1. Input bit duration 2. Input unit rate 3. Output frame rate 4. Output frame sizeA line has a signal-to-noise ratio of 1000 and a bandwidth of 4000 kHz. What is the maximum data rate supported by this line? If the bandwidth of the channel is 5 kbps, how long does it take to send a frame of 100,000 bits out of this device? What is the maximum data rate of a channel with a bandwidth of 200 kHz if we use four levels of digital signaling?