[Q2] Assume the received power is 7.2μW, and n = 17pW/Hz at the receiver's input. What is the channel capacity for data transmission without errors when the bandwidth of the channel is: (a) 560kHz, (b) infinity.

Calculate the modulation index when the carrier power is 15KW, and after modulation, the total power is 17KW.

Problem 2: The message signal m(t)=10cos(400t) phase-modulates (PM) the carrier c(t) = 100cos2лft. The modulation index is ẞ=10. (a) Write the expression for the modulated signal u(t). (b) Determine the average transmitted power. (c) Determine the peak-phase deviation and the peak-frequency deviation. (d) Find the bandwidth of the modulated signal, given f. =1000Hz.

Find the carrier and modulating frequencies, the modulating index, and the maximum deviation of the FM wave represented by the voltage equation v = 12 sin (6 × 10³t + 5 sin 1250t). Select your answer. carrier frequency: 600 MHz; modulating frequency: 1.25 kHz; modulation index: 5; maximum deviation: 994.7 Hz carrier frequency: 95.5 MHz; modulating frequency: 198.94 Hz; modulation index: 5; maximum deviation: 994.7 Hz carrier frequency: 600 MHz; modulating frequency: 198.94 Hz; modulation index: 5; maximum deviation: 994.7 Hz carrier frequency: 95.5 MHz; modulating frequency: 1.25 kHz; modulation index: 5; maximum deviation: 994.7 Hz

answer the ff. for 2 hours

41. Noise is typically narrow spikes of voltage with high frequencies.Group of answer choices True False  42. SCA signal can be transmitted at 67-kHz subcarrier.Group of answer choices True False 43. In FM, as the modulating signal amplitude increases, carrier frequency also increases proportionately.Group of answer choices True False 44. The greater the amplitude of the modulating signal, the higher the frequency deviation rate.Group of answer choices True False 45. With no modulation, the carrier frequency will shift above or below its normal frequency.Group of answer choices True False 46. The higher the frequency of the modulating signal, the greater the frequency deviation of the carrier signal.Group of answer choices True False

Which of the following issues degrade the transmission quality of a perfectly synchronised AM signals most? a. Non-linearity of lowpass filter O b. Envelop of the AM signal O C. Transmission bandwidth O d. Message bandwidth

pls do the question with hand writing, don't just copy the answer from other post or website

Twelve (12) signals each band-limited to 5 kHz are to be transmitted over a single channel by frequency division multiplexing. If AM-SSNB modulation guard band of 1 kHz I used, determine the bandwidth of the multiplexed signal.

Problem1: the figure shows multiple modulation schemes for the signal that is given by the dashed line sinusoidal function, the X-axis is the time axis is seconds and the Y-axis is the amplitude. Answer the following: 1. What is the modulation scheme in A? 2. What is the modulation scheme in B? 3. What is the sampling frequency? 4. What is the value of the duty cycle in A?