Q8/ The required bandwidth (BW) according to FM modulation, when a 100 MHz carrier is modulated with a sinusoidal signal at 5 KHz, the maximum frequency deviation (Af) being 8KHz a) BW = 8 KHz b) BW = 50 KHz c) BW= 102 KHz d) BW = 26 KHz
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- Computer Science Describe the capabilities and bandwidth efficiency of codes in terms of their coding rate, hamming distance and coding gain. And explain the relationships between bandwidth and spreading bit rate.Computer Science Q1(a) Wi-Fi host based on 802.11g@2.4GHz transmits signal with maximum Tx power 30 dBm and antenna gain 6 dBi,then calculate feasible radio range above sensivity level, - 105dBm. (b) from (a) we would like to apply modulation scheme QAM64 to the receiver host at the end of the range.How much BER will the receiver have?2. Suppose a modem uses Quadrature Amplitude Modulation described by the constellation pattern and bit assignment given below. Draw the corresponding encoding of the digital data given below. Assume that the previous signal ended at phase theta = pi . Label each signal modulation with the bit pattern it represents. 0 1 0 1 0 1 0 0 0 1 1 1 1 1 0
- Assume having a low-pass channel that spans from a Frequency of 0Hz to 110Hz, to attain a bit-rate value that is not less than 1Kbps, then among the following, the minimum value of the signal to noise ratio must be: Select one: A. None of the mentioned choices is correct B. 1023 C. 511 D. 15 E. 31 F. 127 G. 255 H. 63Networking price Consider the following bit stream-a. 00000000 b. 11111111 c. 01010101 d. 00110011 Draw the graph of the i. Manchester using each of the given data streams, assuming that the last signal level has been positive. From thegraphs, guess the bandwidth for this scheme using the average number of changes in the signal level.Subject: Data Communication Networks Q2) Suppose that the following 12-bit Hamming code bit stream 101100101101 arrives at receiver. Show how you compute the error syndrome. What is the original sent bit stream? Q3) For the bit stream 010110011010, sketch the waveform for each of the following digital encoding schemes: NRZ, NRZI, Manchester and Manchester Differential Thanks in advance
- Networking question: Consider the following bit stream-a. 00000000 b. 11111111 c. 01010101 d. 00110011 Draw the graph of thei. NRZ-Lii. NRZ-Iiii. Manchesteriv. differential Manchester schemeusing each of the given data streams, assuming that the last signal level has been positive. From the graphs, guess the bandwidth for this scheme using the average number of changes in the signal level.A digitized voice channel is made by digitizing a 4-kHz bandwidthanalog voice signal. We need to sample the signal at twice the highestfrequency. We assume that each sample requires 16 bits. What is therequired bit rate?The bandwidth of 200 kHz is available which spans from 300 to 500 kilohertz. Calculate the bit rate ifthe data modulation is performed by using ASK and FSK with d = 0? (need answer in hurry)
- For the following stream of digital signal which is being transmitted by bit rate 5 Kbps: 101100000000110 a) Draw the waveform for all line codes you studied. b) Determine if the line code is self synchronized or not. c) Determine if the code can be used with ac coupling or not d) Determine the Bandwidth of the line code e) Which code is used in magnetic recording f) Which code is used in LANA Wi-Fi station with one antenna is connected to an Access Point with a PHY rate of 65 Mbps. The channel is using 52 subcarriers, the coding rate is 1/2 and the symbol duration is configured for 4 microseconds. How many amplitude modulation levels are used by this radio?133. Baseband is a. a signal all of whose energy is contained within a finite frequency range b. the simultaneous transmission of data to a number of stations c. transmission of signals without modulation d. All of the above
