ECEN 469 – Mobile Communication
Lecture 1
Dr. Mohammed Karmoose
Know your instructor
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Name:
Mohammed Karmoose
Assistant professor, Alexandria University
Ph.D.: UCLA’19, M.Sc.: Alex. Uni.’13
Email:
MKarmoos@nu.edu.eg
Website
https://mkarmoose.github.io/index.html
Office hours
Monday 10 am – 12 pm
Office: UB2 – S09-B
Course positioning
ECE (ECE
specialization)
ECE (CE
specialization)
ECEN 462 – Dig.
Comm.
ECEN 462 – Dig.
Comm.
ECEN 469 –
Mobile Comm.
ECEN 463 –
Wireless Comm.
ECEN 463 –
Wireless Comm.
ECEN 469 –
Mobile Comm.
3
Course content
Transmitter
Data
source
Source
coding
Channel
coding
Modulator
Precoding
IFFT
Channel
Receiver
Data
source
Source
decoding
Channel
decoding
Demodulator
Equalization
FFT
4
Course content
1. Digital communications review
a. Digital communication systems and baseband models
b. Frequency domain representations
2. Brief description of the wireless channel
3. PHY layer technologies behind recent mobile communication systems
a. Orthogonal Frequency Division Multiplexing (OFDM)
b. Multiple-Input-Multiple-Output (MIMO)
c. Source coding (Huffman codes, etc.)
d. Channel coding (Linear block codes, convolutional codes)
4. System level technologies behind recent mobile communication systems
a. Cellular concept
b. Initial access
5. Example of a mobile communication system: 5G
ECEN 469 – Competencies
A5. Practice research techniques and methods of investigation as an inherent
part of learning.
A8. Communicate effectively – graphically, verbally and in writing – with a
range of audiences using contemporary tools.
A10. Acquire and apply new knowledge; and practice self, lifelong and other
learning strategies
C4. Understand the key principles of signal processing, control theory, and the
main components of analog and digital communication systems. As well as,
DSP and embedded systems
C5. Illustrate the key performance indicators in communication systems and
networks and analyze the performance of analog and digital communication
systems, as well as wireless and optical communication systems and
communication networks
ECEN 469 – Learning Outcomes
- Describe main techniques for source coding and channel coding
- Compare different technologies used for mobile communication
- Gain knowledge about the wireless channel representation
- Develop a mathematical model for some advanced physical layer techniques
such as OFDM and MIMO
- Design suitable initial access mechanisms suitable for communication
systems with different parameters
- Analyze the coverage of cellular systems with different configurations
- Describe the main components of 5G communication system
Course material
1. Lecture slides
2. Notes
3. Assignments
4. MATLAB experiments and codes
5. References
• Tse D, Pramod V. Fundamentals of wireless communication. Cambridge
University Press, 2005
• Dahlman, Erik, Stefan Parkvall, and Johan Skold. 5G NR: The next generation
wireless access technology. Academic Press, 2020
• Haykin, Simon. Communication systems. John Wiley & Sons, 2008.
Logistics
1. ~12 lectures
2. Marks distribution
50 Final, 50 Year work (Final project 15, homeworks and
assignments 10, midterm 15, quizzes 5, attendance 5)
1. Please fill in course survey when the time comes
2. Please keep noise at minimum level during lecture time
3. Be on time (no entrance after 10 mins of lecture time)
Background
Background
Complex discrete-time baseband model
bits
Mapper
bits
Demapper
00011011
Im
Input bits
Symbol
0
1
1
-1
-1
Mapping table
Constellation diagram
BPSK
1
Re
Background
Complex discrete-time baseband model
bits
Mapper
bits
Demapper
00011011
10
Input bits
Symbol
00
-1-j
01
1-j
10
-1+j
11
1+j
1
1
-1
00
-1
Mapping table
Constellation diagram
QPSK
11
01
Background
Complex discrete-time baseband model
bits
Mapper
00011011
+
bits
Demapper
Im
: Additive White Gaussian Noise
(AWGN)
-1
1
: Average energy per data symbol
:
SNR is defined as
Constellation diagram
BPSK
Re