(Link Budget) A spacecraft located at 100000 km from the earth is sending data at 1 Mbit/s using BPSK modulation with a sync pulse. The carrier frequency is 2 MHz. The earth station uses a parabolic antenna, 50 m in diameter, and the spacecraft has an antenna with a gain of 10 dB. The noise temperature of the receiver front end is 300 K. Find the transmitted power in order to provide the BER of 10-5.

A 162-MHz carrier is deviated by 32 kHz by a 2-kHz modulating signal. What is the modulation index? Round the final answer to the nearest whole number.

In an FM broadcast transmitter, the carrier signal is being deviated between 103.505MHz and 103.495MHz, 1200 times/sec by a 5V sinusoid.   a. determine the carrier frequency and intelligence signal frequency b. calculate percent modulation c. determine the amplitude of the modulating signal necessary to deviate the carrier between 103.507 and 103.493 MHZ, calculate the intelligence signal amplitude

Please answer completely what are being asked and please write neatly. Thanks! A 75 MHz carrier having an amplitude of 50 V is modulated by a 3 kHz audio signal that has an amplitude of 20 V. d. Determine the modulation factor. e. What frequencies would show up in a spectrum analysis of the modulated wave? f. Write trigonometric equations for the carrier and the modulating waves.

B. DSBSC modulated signal is transmitted over a noisy channel, with the power spectral density of noise being as shown in Figure 1. The Costas receiver shown in figure 2 is used to recover the signal. (Assume: (9) phase shift is constant value arrange between zero to 90 degree) 1. Derive the demodulated signal 2. Determine the maximum power of the demodulated signal 3. Determine the signal to noise ratio for the demodulated signal Iehannel Product modulator Loe-pess fite Demodlated sigal cos (2f Voltag controlled Ocillator Prase dscrinirata DSB SC sigal A, cos (2ef, m phase-shifter Sy WHz sin 2nfa + 4) 10 Puduct moduletar Loepes filter AKH2) Qctanne -400 400 Figure 1 Figure 2

A 10 MHz carrier signal is frequency modulated by a sinusoidal signal of unity amplitude and with a FM frequency deviation constant k = 10 Hz/V. Find the approximate bandwidth of the frequency modulated signal if the modulating frequency (single tone) is 10 kHz.

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A signal is transmitted at 1 W from an antenna. Due to channel attenuation, the received signal power is 1 mW. Calculate the change in signal power in terms of decibels. (The answer should be one sentence saying "X" dB amount of decrease is observed.)

1. Which system has the best projected BER? 2. An earth station satellite transmitter has an HPA with a rated saturated output power of 10,000 W. The back-off ratio is 6 dB, the branching loss is 2 dB, the feeder loss is 4 dB, and the antenna gain is 40 dB. Determine the actual radiated power and the EIRP.