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Introduction.
Often when developing a new wireless digital communication protocol it is useful to develop a simulator to evaluate the various methods available for communication of the data.
Frequency hopping spread spectrum (FHSS) is uses in wireless communications.
Task.
The nature of this assignment is to research into the concept and use of frequency hopping spread spectrum and become familiar with the physical aspects of this method, e.g. the frequency description, the data rates, the spreading technique. Once you are familiar with the physical aspects then you are to discuss how these can be simulated using a computer program. Note you need not refer to any specific language but you need to outline in detail the methodology used to simulate this technique.
Consider a circuit consisting of a sinusoidal source vs(t) = cos(t)u(t) volts connected in series to a resistor R and an inductor L and assume that they have been connected for a very long time. (a) Let R=0 and L=1 H. Compute the instantaneous and ..
A. Determine the fundamental frequency w0, the period t0, and the coefficients in the representation X(t) = x0 + Re{(sigma)k=1N Xkejkwot} for the above input. C. Now consider a new signal y(t) = x(t) + 10 cos (50 pi t - pi/6). How is the spectrum ..
Input Xi and Yi of each Full Adder circuit in an arithmetic circuit has the digital logic specified by the following Boolean functions: Xi =Ai Yi = B*iS + BiCin* Where S is a selection variable, and Cin is the input carry, and Ai and Bi are the inp..
Consider the logic function f(a,b,c) = abc + ab'c + a'bc + a'b'c + a'bc'. (a) Draw the logic circuit for the function f given above. (b) Let the cost of a logic circuit be the total number of gates plus the total number of inputs to all gates
Suppose that we want to determine how many of the bits in a six-bit unsigned number are equal to 1. Design the simplest circuit that can accomplish this task.
Discuss how the ethical problem solving techniques presented in this course could be applied to bribery and the acceptance of gifts. This discussion should be two paragraphs in length.
Design a regulated DC power supply. You will have for input a 110 V input source at a frequency of 60 Hz. The Zener diode to use is the 1N4733A (which is available in the lab). The output voltage is to be 5.1 V with a load resistance above 2.2K.
In anaudio CD, the audio voltage signal is sampled about 44,000 timesper second, and the value of each sample is recorded on the CD surface as a binarynumber. In other words, each recorded binary number represents a single voltage point on theaudio..
A 2.4KV, single-phase circuit suppllies a load of 250KW at a lagging power factor, and the load current is 160A. If it is necessary to improve the power factor, determine the following: (a)The uncorrected poer factor and reactive load.
A 600/120V, 60Hz transformer has a primary resistance of 0.4 Ohm, reactance of 0.9 ohm and secondary has a resistance of 0.8 Ohm and reactance of 1.2 Ohm. Find the secondary terminal voltage when it is connected to a load of 1500W at 0.8 lagging p..
An input signal of 10V at 0 degrees is applied to a series RLC circuit with resistore R=100 ohm, inductor L=40 mH, and capacitor C = 0.5uF. determine what is The value of the total circuit complex impedence.
A PWM is to be programmed to output a signal with a pulse high width of 150 usec and a pulse low width of 250 usec. What are the values required for prescale (if any) PWMPER and PWMDTY An 8-bit configuration is used and the E-clock is 24 MHz.
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