(0) Delay-lock discriminator Power divider (-9+7) 0,(r) Spreading waveform generator 3(2) a (1) EF band pass...

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(0) Delay-lock discriminator Power divider (₁-9₁+7) 0,(r) Spreading waveform generator 3₂(2) a₂ (1) EF band pass 2,01) filter BN IF bandpass filter BN Power divider c(₁-P₂-4.T.) Local oscillator Lowpass filter Lowpass Spreading waveform clock (2,8) FIGURE 4-9. Noncoherent delay-lock code tracking loop. Loop filter f(2) Voltage- controlled oscillator K P(Z) Name EE625 EXAM 2 Spring 2016 Exam 2 is an in-class exam. Your text, notes and calculator may be used for the exam. Matlab, Excel, or other software may be used to check your work.. Remember to show all your work. 1. (20 points) Autocorrelation and Cross Correlation. a. Given that the autocorrelation of a energy signal is A 14 Jun 2016 A T Find the energy spectral density. b. Compare the autocorrelation of an infinite sequence of random binary digits with that of an ml- sequence of period N. Sketch these two functions. c. Define the discrete periodic autocorrelation of a random binary sequence. d. What role does the cross correlation function play in the noncoherent delay-lock code tracking loop in figure 4-9, page 165. (0) Delay-lock discriminator Power divider (₁-9₁+7) 0,(r) Spreading waveform generator 3₂(2) a₂ (1) EF band pass 2,01) filter BN IF bandpass filter BN Power divider c(₁-P₂-4.T.) Local oscillator Lowpass filter Lowpass Spreading waveform clock (2,8) FIGURE 4-9. Noncoherent delay-lock code tracking loop. Loop filter f(2) Voltage- controlled oscillator K P(Z) Name EE625 EXAM 2 Spring 2016 Exam 2 is an in-class exam. Your text, notes and calculator may be used for the exam. Matlab, Excel, or other software may be used to check your work.. Remember to show all your work. 1. (20 points) Autocorrelation and Cross Correlation. a. Given that the autocorrelation of a energy signal is A 14 Jun 2016 A T Find the energy spectral density. b. Compare the autocorrelation of an infinite sequence of random binary digits with that of an ml- sequence of period N. Sketch these two functions. c. Define the discrete periodic autocorrelation of a random binary sequence. d. What role does the cross correlation function play in the noncoherent delay-lock code tracking loop in figure 4-9, page 165.

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1a Lets denote the spectral density as Sf where f represents the frequency The autocorrelation function t can be written as since we are assuming a timeinvariant autocorrelation The formula for the sp... View the full answer