what is the main problem with over modulation (m>1)?
1.) Angle Modulation can be subdivided into phase modulation (PM) and frequency modulation (FM). Highlight the differences between FM and PM. What is meant by the term instantaneous frequency? 2.) Describe what is meant by the term "Zero-Crossings" of a FM or PM wave. 3.) Is PM and/or FM a linear modulation technique? Explain. 4.) Describe one important advantage that angle modulation has over amplitude modulation. Describe one distinct disadvantage that angle modulation has over amplitude modulation. 5.) Describe the...
What are the different modulation ranges of the space vector modulation (SVM)? How does the inverter´s fundamental output voltage over the modulation ranges of SVM relate to the ranges of sine-triangle modulation added with third harmonic.
Consider frequency modulation with a sinusoidal message signal (tone modulation) m(t) = a cos(2πfmt). The modulated signal is: vFM(t) = Ac cos[2πfct + βf sin(2πfmt)]. with βf = kfa/fm being the modulation index. What is the bandwidth of the modulated signal.
Consider frequency modulation with a sinusoidal message signal (tone modulation) m(t) = a cos(2πfmt). The modulated signal is: vFM(t) = Ac cos[2πfct + βf sin(2πfmt)]. with βf = kfa/fm being the modulation index. What is the bandwidth of the modulated signal.
Given a modulated signal of Ac[1 + m(t)]Cos2fct, what is the modulation index if Ac=10, Am=6, and the k factor of the modulator =2?
Write the transmitted signal of QPSK ofs(t) for i-1, 2, 3, 4, and 0 t 2) Explain why this modulation scheme is called QPSK 3) If the transmitted signals are sent over an AWGN channel, what is the optimum receiver to minimize the probability of error in decoding the symbols? Write the transmitted signal of QPSK ofs(t) for i-1, 2, 3, 4, and 0 t 2) Explain why this modulation scheme is called QPSK 3) If the transmitted signals are...
Problem 2: The following main function is going to call odd_sum function created in problem 1. Write MIPS assembly codes for this main function only. Assume m and result are in s1 and s2 respectively. int main () { int m = 7, result; result = odd_sum ( m); return 0; } Problem 2: The following main function is going to call odd_sum function created in problem 1. Write MIPS assembly codes for this main function only. Assume m and...
Communication system 7- What is the main function of the analog front end (why it is needed and what does it do)? 8- What are the main channel effects? 9- What is the reason for exitance of noise and where exactly it happens physically in the system? 10- Draw a block diagram that represents the channel effect. 11- Write an the expression of the received signal, y(t), given that the transmitted signal is x(t), the channel effect is h(t) and...
2. Consider the modulated waveform shown What is the modulation index and percent modulation? A DSB (Do sidebands and the carrier frequency? a. 3. uble Sideband) signal contains 1kW of power. How much power is contained in the
comunication Problem 2: If the message signal is 00101101 And the carrier is sinusoid, draw the modulated signal s(0 using the below modulation schemes What is the ASK A. B. What is the FSK C. what is the PSK with phase Problem 2: If the message signal is 00101101 And the carrier is sinusoid, draw the modulated signal s(0 using the below modulation schemes What is the ASK A. B. What is the FSK C. what is the PSK with...