Appendix for Chapter 2
Representations of
Bandpass Signals
Representations of Bandpass Signals
It is desirable to reduce all bandpass signals to equivalent lowpass signals. The
resulting signals are therefore independent of the carrier frequency and chann
Yazd University
ECE-042
Wireless Communications
Chapter 4: Bandpass Transmission Techniques for
Wireless Communications
Jamshid Abouei, ECE-042 Wireless Communications, Yazd University, Iran, Fall 2011
1
Outline
Yazd
University
Introduction to Digital Com
KEEE494: 2nd Semester 2009
Lab II
Lab 2: Generation of Correlated Random Samples
1
Random Vector
A random vector X with n components is given as
X = [X1 X1 Xn ]
where Xk is the random variable.
Denition: Vector correlation
The correlation of a random ve
Yazd University
ECE-042
Wireless Communications
Chapter 4: Bandpass Transmission Techniques for
Wireless Communications
Jamshid Abouei, ECE-042 Wireless Communications, Yazd University, Iran, Fall 2011
1
Outline
Yazd
University
Introduction to Digital Com
Yazd University
Wireless LAN
802.11
physical layer
Behrouz Banitalebi
8901494
Lecture brief
Technology background
Radio transmission (line codes, modulation)
Error correction
Spread spectrum
Applications in WLAN
Physical level sub layers
The 802.11 standa
Topic 5. Introduction to Digital
Communications
1. Analog and Digital Transmitters and Receivers
2. Sampling Theorem, Reconstruction and Aliasing (Se. 7.1,
Sec 3.15)
3. Quantization and Quantizing Effect
4. Pulse Coded Modulation (PCM) (Sec. 7.6)
5. Time
UNIVERSITY OF SOUTHAMPTON
ELEC6014W1
SEMESTER 2 EXAMINATIONS 2011-2012
RADIO COMMUNICATION NETWORKS AND SYSTEMS
DURATION: 120 MINS (2 Hours)
This paper contains 5 (FIVE) questions.
Answer THREE questions out of FIVE.
An outline marking scheme is indicated
UNIVERSITY OF SOUTHAMPTON
ELEC6014W1
SEMESTER 2 EXAMINATIONS 2012-2013
RADIO COMMUNICATION NETWORKS AND SYSTEMS
DURATION: 120 MINS (2 Hours)
This paper contains 5 (FIVE) questions.
Answer THREE questions out of FIVE.
An outline marking scheme is indicated
UNIVERSITY OF SOUTHAMPTON
ELEC6014W1
SEMESTER II EXAMINATIONS 2010/11
RADIO COMMUNICATION NETWORKS AND SYSTEMS
Duration: 120 mins
Answer THREE questions out of FIVE.
University approved calculators may be used.
An approximate marking scheme is indicated.
UNIVERSITY OF SOUTHAMPTON
ELEC6014W1
SEMESTER II EXAMINATIONS 2009/10
RADIO COMMUNICATION NETWORKS AND SYSTEMS
Duration: 120 mins
Answer THREE questions out of FIVE.
University approved calculators may be used.
An approximate marking scheme is indicated.
UNIVERSITY OF SOUTHAMPTON
ELEC6014W1
SEMESTER II EXAMINATIONS 2007/08 RADIO COMMUNICATION NETWORKS AND SYSTEMS
Duration: 120 mins
Answer THREE questions out of FIVE. University approved calculators may be used. An approximate marking scheme is indicated.
UNIVERSITY OF SOUTHAMPTON
ELEC6014W1
SEMESTER II EXAMINATIONS 2008/09
RADIO COMMUNICATION NETWORKS AND SYSTEMS
Duration: 120 mins
Answer THREE questions out of FIVE.
University approved calculators may be used.
An approximate marking scheme is indicated.
Minimum Mean Square Error Equalisation
The discrete-time channel model is given by
nc
r(k) =
i=0
ci s(k i) + n(k)
(1)
where nc is the channel length, ci are complex-valued channel taps, the N -QAM symbol s(k) cfw_si,l = ui + jul , 1 i, l N with j = 1, ui
ECE-501
Due: November 21, 2011
Wireless Communications
Jamshid Abouei
Homework Set # 3
Problem 3.1. Consider a QPSK signal that is represented by the equivalent low pass signal
g(t) =
ak p(t kTs ),
k=
where ak takes on four possible and equally likely val
ECE-501
Due: October 15, 2011
Wireless Communications
Jamshid Abouei
Homework Set # 1
Problem 1.1. Suppose that a Mobile Station (MS) is moving along a straight line between
base stations BS1 and BS2 , as shown in the gure. The distance between base stati
ECE-501
Due: October 31, 2011
Wireless Communications
Jamshid Abouei
Homework Set # 2
Problem 2.1. Land mobile fading channel simulator- Frequency domain method: In this
problem, you will create a computer program to generate realizations of a Rayleigh fa
Yazd University
ECE 042
Wireless Communications
Homework01-Solutions
1
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University
2
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University
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University
4
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University
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University
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University
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University
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University
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University
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Yazd University
ECE 501
Wireless Communications
Homework04
DPSK in Frequency Selective Fading Channels
1
DPSK in Frequency Selective Fading Channels
Yazd
University
Appendix.
2
DPSK in Frequency Selective Fading Channels
Yazd
University
3
DPSK in Frequenc
Yazd University
ECE 042
Wireless Communications
Homework03-Solutions
1
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University
2
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University
3
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University
4
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University
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University
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University
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University
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University
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Ya
Yazd University
ECE 501
Wireless Communications
Homework04-Appendix
Differential Phase Shift Keying
1
Differential Phase Shift Keying (DPSK)
Yazd
University
2
Transmitter and Receiver for DPSK
Yazd
University
3
Error Probability of DPSK
Yazd
University
4
Yazd
University
Wimax
Mohammad Javad Zardosht
October 2011
1
Outine
Introduction
Wireless Network
Wimax standards
PHY layer
Wimax vs. WiFi
Advantage
2
WhatisWiMAX?
Worldwide Interoperability for Microwave Access
Based on IEEE 802.16
WiMAX was seen as more
Yazd University
ECE 501
Wireless Communications
Chapter 2: Characterization of Wireless Channels
Part I
Jamshid Abouei, ECE 501 Wireless Communications, Yazd University, Iran, Fall 2011
1
Outline
Yazd
University
Large-Scale (Long-Term) Impairments: Path L