The food chain is the progression of food energy from one species to the next
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T
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Matched processors for two orthogonal signals for multiple access. The following worksheet specifies a pair of 10-sample CDMA orthogonal data signals: sA1 in B5:B14 and sB1 in C5:C14. Random transmitted bits DAt and DBt are computed in B1 and D1. The transmitted signal sATi (in D5:D14) = sAi if DAt=1 and =-sAi if DAt=0. The transmitted signal sBTi (in E5:E14) = sBi if DBt=1 and =- sBi if DBt=0. The Gaussian noise sequence Ni SD ?N is specified in F1. The detected signal Xi is computed in G5:G14. The matched processor component sAiXi is computed in H5:H14 and VA is computed in H16. The detected bit DAr is computed in B2 from VA. The matched processor component sBiXi is computed in I5:I14 and VB is computed in I16. The detected bit DBr is computed in D2 from VB
The probability of error is estimated by computing the ratio of errors to transmitted data in L5 as the noise ?N varies from 0 in steps of ?? = (Es/2)1/2 using Es computed in F2. The total number of data bits to be transmitted nT is specified in L2. The number of transmissions accomplished in shown in L3 – with 2 bits per transmission - and the number of errors in L4. Three VBA Macros
are present:
? ResetMA resets the counts in L3 and L4.
? XmitMA increments the number of transmissions by two for each signal transmission
and, if errors occur, increments the error count for each error.
? AutoMA computes the P[error] for nT transmissions as ?N varies and displays the results
in K8:K16.
a. What is the formula in B1?
b. What is the formula in D1?
c. What is the formula in D2?
d. What is the formula in F2?
e. What is the formula in D10?
f. What is the formula in E10?
g. What is the formula in F10?
h. What is the formula in G10?
i. What is the formula in H10?
j. What is the formula in H16?
k. What is the formula in B2?
l. What is the formula in I10?
m. What is the formula in I16?
n. What is the formula in D2?
o. What is the formula in L1?
p. What is the formula in L4?
q. Compose ResetMA.
r. Compose XmitMA.
s. Compose AutoMA.
The marketing loan is a price support program
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A good lubricant should be used whenever installing lug nuts
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:When connecting gauges to an already installed and operating unit with split system installation valves, the installation valves should be
A) Left alone. B) Frontseated to allow the gauges to read the system pressures. C) Backseated as tightly as possible to prevent refrigerant from escaping. D) Moved to the mid position to allow the gauges to read the system pressures.