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1- Wireless Communication
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Shared Link:
https://docs.google.com/spreadsheets/d/1k1RlHeAGut4It1v2j8hfF0h4Aa3Or3ea07Abh3-vRXw/edit?usp=sharing
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1. Basic Concepts
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1.1. Frequency and wavelength
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1.2. Amplitude and phase modulation
https://learnwithpatience-wc.blogspot.com/2025/07/112-amplitude-and-phase-modulation.html
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1.3. Analog vs. digital modulation
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1.4. Antennas and propagation
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2. Signal Propagation and Channel CharacteristicsSONY
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2.1. Free-space path loss and path loss models
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2.2. Multipath propagation, shadowing, and fading
Signal Processing: Modulation, demodulation, coding theory (error correction codes), channel estimation, equalization, MIMO (Multiple-Input Multiple-Output) techniques, OFDM/OFDMA.
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2.3. Fading models (Rayleigh, Rician)
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2.4. Link budget analysis
Wireless Channel Characteristics: Fading (Rayleigh, Rician), path loss models, interference management.
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2.5. Signal-to-noise ratio (SNR)
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2.6. Bit error rate (BER)
Network Architectures: Understanding the differences and similarities between WLAN, cellular, and sensor networks.
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2.7. Interference management
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2.8. Channel Reciprocity
Link Level vs. System Level: Be ready to discuss the intricacies of both. Link-level simulation focuses on the performance of a single wireless link, while system-level simulation considers multiple links, interference, and network-wide performance.
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3. Modulation and Demodulation Techniques
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3.1. Analog modulation (AM, FM, PM)
https://learnwithpatience-wc.blogspot.com/2025/07/modulation-techniques.html
Specific Technologies:
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3.2. Digital modulation (ASK, FSK, PSK, QAM)
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3.3. OFDM (Orthogonal Frequency Division Multiplexing)
https://learnwithpatience-wc.blogspot.com/2025/07/135-orthogonal-frequency-division.html
Wireless LAN (IEEE 802.11): This is a critical area. Review the evolution of Wi-Fi standards (802.11a/b/g/n/ac/ax/be/bn). Pay close attention to the MAC (Medium Access Control) and PHY (Physical Layer) protocols. Understand concepts like CSMA/CA, OFDMA, MU-MIMO, spatial reuse, and power saving mechanisms.
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3.4. Demodulation and detection techniques
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Cellular Systems (3GPP): While not as emphasized as WLAN, knowledge of 4G (LTE) and 5G (NR) fundamentals will be beneficial, especially regarding concepts that cross over (e.g., massive MIMO, beamforming).
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4. Error Detection and Correction
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4.1. Parity and checksums
Sensor Network Technologies & Distributed Networking: Brush up on concepts relevant to IoT, low-power communication, and distributed consensus mechanisms.
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4.2. Cyclic redundancy check (CRC)
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4.3. Coding theory (Error correction codes)
Wireless PAN (Personal Area Network) Systems: Think Bluetooth, Zigbee, and their applications.
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4.4. Forward error correction (FEC)
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5. Receiver Signal Processing
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5.1. Channel Synchronization1-Wireless Communication
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5.1.1. Bit, symbol, and frame synchronization2-Communication Systems
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5.1.2. Timing Recovery
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5.1.3. Frequency Synchronization
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5.2. Channel Estimation
https://learnwithpatience-wc.blogspot.com/2025/07/channel-estimation.html
3-Data Communication
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5.2.1. Pilot-based and blind estimation4-Networking Concepts
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5.2.2. MIMO Signal Estimation
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5.3. Channel Equalization
https://learnwithpatience-wc.blogspot.com/2025/07/channel-equalization.html
5-3GPP RAN
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5.3.1. Linear and adaptive equalization techniques6-Digital Signal Processing
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5.4. Automatic Gain Control (AGC)
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5.5. MIMO Signal Detection
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6. Multiple Access Techniques
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6.1. FDMA, TDMA, CDMA
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6.2. OFDMA
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6.3. NOMA
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6.4. CSMA/CA
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7. Network Architectures
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7.1. WLAN, cellular, and sensor networks: differences and similarities
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7.2. PAN (Bluetooth, Zigbee)
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7.3. Wireless LAN (Wi-Fi)
https://learnwithpatience-wc.blogspot.com/2025/07/wi-fi-technology.html
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7.4. Cellular networks (2G, 3G, 4G, 5G)
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8. Wireless Standards
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8.1. Wireless LAN (IEEE 802.11)
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8.1.1. Evolution of Wi-Fi standards (802.11a/b/g/n/ac/ax/be/bn)
https://learnwithpatience-wc.blogspot.com/2025/07/wi-fi-technology.html
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8.1.2. Wi-Fi PHY and MAC protocols
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8.1.3. Key features: OFDMA, MU-MIMO, spatial reuse, and power saving mechanisms
https://learnwithpatience-wc.blogspot.com/2025/07/mimo-multiple-input-multiple-output.html
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8.2. Wireless PAN (IEEE 802.15)
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8.2.1. Bluetooth, Zigbee, and their applications
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8.3. Cellular Systems (3GPP)
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8.3.1. Fundamentals of 4G (LTE) and 5G (NR)
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8.3.2. Shared concepts: massive MIMO and beamforming
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9. Antennas and Antenna Arrays
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9.1. Antenna types and radiation patterns
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9.2. MIMO (Multiple-Input, Multiple-Output) and MU-MIMO
https://learnwithpatience-wc.blogspot.com/2025/07/mimo-multiple-input-multiple-output.html
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10. Wireless Security
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10.1. Encryption and authentication
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10.2. Wi-Fi security protocols (WEP, WPA, WPA2, WPA3)
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10.3. Security vulnerabilities and attacks
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11. Emerging Technologies
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11.1. 5G and beyond (millimeter-wave, massive MIMO)
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11.2. Sensor Network Technologies & Distributed Networking
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11.2.1. Concepts relevant to IoT, low-power communication
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11.2.2. Distributed consensus mechanisms
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11.3. Cognitive radio and dynamic spectrum access
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11.4. Software-defined networking (SDN)
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12. Practical Implementation
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12.1. Software-defined radios (SDRs)
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12.2. Wireless communication hardware and software tools
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12.3. Prototyping and testing wireless systems
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12.4. MODEM development
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