ELECTRICAL WIRING:RESIDENTAL-6 PLANS
18th Edition
ISBN: 9781305098329
Author: MULLIN
Publisher: CENGAGE L
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Textbook Question
Chapter 2.1, Problem 6R
What phrase is used when a substitution is permitted for a specific item? __________
__________________________________________
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Using the 802.11a specifications given below, in Matlab (or similar tool) create the time domain signal
for one OFDM symbol using QPSK modulation. See attached plot for the QPSK constellation.
Your results should include the power measure in the time and frequency domain and comment on
those results.
BW
802.11a OFDM PHY Parameters
20 MHZ
OBW
Subcarrer Spacing
Information Rate
Modulation
Coding Rate
Total Subcarriers
Data Subcarriers
Pilot Subcarriers
DC Subcarrier
16.6 MHZ
312.5 Khz (20MHz/64 Pt FFT)
6/9/12/18/24/36/48/54 Mbits/s
BPSK, QPSK, 16QAM, 64QAM
1/2, 2/3, 3/4
52 (Freq Index -26 to +26)
48
4 (-21, -7, +7, +21)
*Always BPSK
Null (0 subcarrier)
52 subarriers
-7
(48 Data, 4 Pilot (BPSK), 1 Null)
-26 -21
0
7
21 +26
14
One Subcarrier
1 OFDM symbol
1 OFDM Burst
-OBW 16.6 MHz
BW 20 MHZ
1 constellation point
= 52 subcarriers
= one or more OFDM symbols
802.11a OFDM Physical Parameters
Show signal at this point
x bits
do
Serial
Data
d₁
S₁
Serial-to-
Input
Signal
Parallel
Converter
IFFT…
Find Vb and Va using Mesh analysis
1. The communication channel bandwidth is 25 MHz centered at 1GHz and has a noise power spectral
density of 10^-9 W/Hz. The channel loss between the transmitter and receiver is 25dB. The application
requires a bit rate of 200Mbps and BER of less than 10^-4. Excluding Mary FSK, Determine the minimum
transmit power required.
Chapter 2 Solutions
ELECTRICAL WIRING:RESIDENTAL-6 PLANS
Ch. 2.1 - What is the purpose of specifications?Ch. 2.1 - Refer to the specifications in the back of this...Ch. 2.1 - What is done to prevent a plan from becoming...Ch. 2.1 - Name three requirements contained in the...Ch. 2.1 - Prob. 5RCh. 2.1 - What phrase is used when a substitution is...Ch. 2.1 - What is the purpose of an electrical symbol?...Ch. 2.1 - Prob. 8RCh. 2.1 - Prob. 9RCh. 2.1 - What three parties must be satisfied with the...
Ch. 2.1 - What does a plan show about electrical outlets?...Ch. 2.1 - Prob. 13RCh. 2.1 - Prob. 14RCh. 2.1 - Prob. 15RCh. 2.1 - Prob. 16RCh. 2.1 - Prob. 17RCh. 2.1 - Prob. 18RCh. 2.1 - Prob. 19RCh. 2.1 - What methods may be used to mount luminaries to an...Ch. 2.1 - What advantage does a 4 in. octagon box have over...Ch. 2.1 - What is the size of the opening of a switch...Ch. 2.1 - Prob. 23RCh. 2.1 - Prob. 24RCh. 2.1 - Prob. 25RCh. 2.1 - Prob. 26RCh. 2.1 - Prob. 27RCh. 2.1 - Prob. 28RCh. 2.1 - Prob. 29RCh. 2.1 - Prob. 30RCh. 2.1 - Prob. 31RCh. 2.1 - Prob. 32RCh. 2.1 - Prob. 33RCh. 2.1 - Prob. 35RCh. 2.1 - Prob. 37RCh. 2.1 - Prob. 38RCh. 2.1 - Prob. 39RCh. 2.1 - Prob. 40RCh. 2.1 - Prob. 42RCh. 2.1 - Does the NEC allow metal raceways to be used with...Ch. 2.2 - Prob. 1RCh. 2.2 - What is the size of the footing for the steel...Ch. 2.2 - Prob. 3RCh. 2.2 - Prob. 4RCh. 2.2 - Prob. 5RCh. 2.2 - Prob. 6RCh. 2.2 - How far is the front garage wall from the curb?...Ch. 2.2 - How far is the side garage wall from the property...Ch. 2.2 - Prob. 9RCh. 2.2 - What is the purpose of the I-beams that rest on...Ch. 2.2 - Where is access to the attic provided?...Ch. 2.2 - Prob. 13RCh. 2.2 - Prob. 14RCh. 2.2 - Prob. 15RCh. 2.2 - Prob. 16RCh. 2.2 - What is the stud size for the partitions between...Ch. 2.2 - Who is to furnish the range hood?...Ch. 2.2 - Who is to install the range hood?...
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