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The definition of Pg is defined to be the rate of change of the PN chip rate to the data rate. What is the Pe or BER for:
a. An IS-95 CDMA DSSS with QPSK modulation system and assuming K = 20 users sharing the same 1.25MHz channel, if the maximum Eb/No of 7.8 dB is provided for each user and the PN code lengths are 32,678 chips ( 2E+15).
b. Using actual IS-95 2G system the provided bit rate is 9600 what it the BER vs. the lS-95 CDMA above
A load consists of a resistance R in parallel with a capacitor of reactance X. The load is fed from a single phase supply through a line of impedance 8.4 + j11.2 ohms. The rms voltage at the load terminal is 1200 at 0 degress V rms,
A circuit is needed to display a 4-bit value on the LEDs of the logic designer. This value can come from two different sources. Design a circuit using four 2-to-1 multiplexers to select which of the two values to display on the LEDs.
Write a loop to count the number of 1's in the array. If there is an even number of 1's in the array then the OddParity variable will be set. Create a bit-array of 10 elements with appropriate values, and create variables for Sum and OddParity.
Using the IIR digital filter design, determine the difference equation to generate a single 852 Hz tone with a sampling frequency of 8000Hz
Design a circuit that has 4 inputs, WXYZ, and two outputs, f and g, where W is the most and Z is the least significant bit. The output f is asserted whenever the two-bit number WX is greater than the two-bit number YZ.
Design the minimum-cost circuit and compare its cost with combined costs of two circuits that implement f and g separately. Assume that the input variables are available in both uncomplemented and complemented forms.
A. determine the mean, variance, and standard deviation B. find the three quartiles and the interquartile range C. Prepare a box plot for the data and determine if there are any outliers present.
A current of 4 A rms flows when a neon sign is supplied by a 110-V rms power system. The current lags the voltage by 60°. Find the power dissipated by the circuit and the power factor.
If a RAM memory has a 5-to-32 row address decoder and a 6-to-64 column address decoder, and eight pins I/O, what is the size of the memory
A certain signal is modeled by a continuous Gaussian random process X(t) with mean E {X(i)} = 2 and autocorrelation function R(t, r) = 4 + e-0.5|r|. Compute the covariance function C(t, r). Compute the variance of X(t). Write the PDF for a single ..
design the details of the D/A using a Weighted Resistor( NOT R-2R) technique, as well as the logic details of the sequencer/decision maker/state machine which sequences the A/D through its conversion steps to convert an analog input into a 4-bit b..
The bandwidth of a series resonant circuit is 400 Hz. (a) If the resonant frequency is 4000 Hz, find Q. (b) If R = 10 ohm, what is the value of XL at resonance
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