1. (1.5 points) A CDMA receiver gets the following chips: (+1 -1 +3 -1 +1 +3...
(a) A noiseless 4 kHz channel is sampled every 1 msec and each sample is either a 0 or 1. What is the maximum data rate? How does the maximum data rate change if the channel is noisy, with a signal-to-noise ratio of 30 dB? (b) A CDMA receiver gets the following chips: (-1 +1 -3 +1 -1 -3 +1 +1). The chip sequences of each station is shown as follows. A = ( -1 -1 -1 +1 +1 -1...
The following figure shows how to construct a module of chips that can store 1 MB based on a group of four 256-Kbyte chips. Let’s say this module of chips is packaged as a single 1-MB chip, where the word size is 1 byte. Give a high-level chip diagram of how to construct a 8-MB computer memory using 8 1-MB chips. How many memory addresses lines do you need (In the example, it is 20 lines -MAR)? Question 8 options:...
show all work. 1) Assume that string of bits 1010... is the data that needs to be send from computer X to computer y in a LAN. The transmitted signal (signal leaving computer X) for this data is represented in the figure below. Assume a periodic signal. Identify the fundamental frequency of this signal, and the frequency values for the first seven harmonics that are actually present in the signal Amplitu Answers a) Fundamental Frequency b) Harmonics 2 3 4...
microprocessors,,pls help.. 1. (3 Points) Draw a timing diagram similar to the 'practical' case of figure 5, below, for the case where signal Ao makes its transition first. Note: For each timing diagram that you draw, be sure that subsequent events appear to the right of causative events, and show causality arrows. 3.1 Glitch pulses Consider the one-bit adder circuit of figure 4. This circuit is called a one-bit (binary) adder because output signal So is the sum of input...
show steps 7 pts) Consider an FSK system where bits 1 and 0 are transmitted using signals si(t) and s2(t) 2Eb 2Eb where θ1 and 02 are the phases of the two signals. (a) (3 pt) Find the correlation between the signal s1(t) ard salt), i.e., find oin(t)s2(t)dt. b) (2 pt) Assuming non-coherent carriers, i.e., θ|メ02, state the condition for which the correlation derived in part (a) goes to zero. (c) (2 pt) Repeat part (b) for the case where...
3. (40 points) A binary communication system transmits signals s (0) (i = 1, 2). The receiver samples the received signal r(t) = s(t)+ n(t) at T and obtain the decision statistic r =r(T) = S(T) + n(T) = a, un, where the signal component is either a = + A or a, = -A with A >0 and n is the noise component. Assume that s (6) and s(l) are equally likely to be transmitted and the decision threshold...
1/9 1 Piping system (14 points) Water is pumped from a reservoir to a large receiver vessel which is maintained at p4 6 bar (absolute) through the operation of the pump and a high pressure nitrogen supply that bleeds into the tank through a regulator. The water enters through an opening at the top of the vessel. A drain is provided at the low point in the system. Elevations are as shown. All valves are gate valves (k = 0.15)...
1/9 1 Piping system (14 points) Water is pumped from a reservoir to a large receiver vessel which is maintained at p4 6 bar (absolute) through the operation of the pump and a high pressure nitrogen supply that bleeds into the tank through a regulator. The water enters through an opening at the top of the vessel. A drain is provided at the low point in the system. Elevations are as shown. All valves are gate valves (k = 0.15)...
All True or False Questions 1. In the introduction to networking module, we learned that the main reason we need networking is to allow software applications to Send/Receive data from other software applications (i.e. so that apps can talk to each other) T or F 2. Data networks move binary data (zeroes and ones) encoded as signals through transmission media between devices (or more precisely apps running on devices) T or F 3. Hosts (also known as end-points) can be...
3. (20 points) The local spatial average of a power delay profile is shown in the following figure. We assume that the coherence bandwidth is approximated by B and the coherence time is estimated using the popular rule of thumb for modern digital communications. Pr(r) -10 dBm -20 dBm -30 dBm 0 5 10 excess delay r rs) If a baseband message with a bit rate R, 400 kbps is modulated by an RF carrier frequency of 5.8 GHz and...