Basics of Baseband and Radio Frequency
Clear, technical overview of a mobile voice signal: analog-to-digital baseband processing, source/channel coding, modulation, upconversion and RF transmission and reception.
Mobile Communications
Mobile Communications represents a dynamic field within electronics and PCB design, encompassing the technologies that enable wireless connectivity in devices ranging from smartphones to IoT sensors. This category delves into the foundational principles and advanced innovations driving seamless data transmission, voice calls, and network integration. Whether you are an engineer optimizing circuit boards for high-frequency signals or a developer integrating modules into embedded systems, the content here addresses the core challenges and opportunities in this rapidly evolving domain. Our articles offer comprehensive guides on essential topics such as antenna design, RF module selection, and PCB layout strategies tailored for mobile applications. Tutorials provide step-by-step instructions for implementing protocols like Bluetooth, Wi-Fi, and cellular standards, while insights explore emerging trends including 5G deployment and edge computing. Best practices focus on ensuring signal integrity, power efficiency, and electromagnetic compatibility, helping you avoid common pitfalls in real-world projects. The practical value of Mobile Communications extends to diverse industries, from consumer electronics to automotive and healthcare. By understanding these concepts, professionals can enhance device performance, reduce interference, and comply with regulatory standards. Articles in this category equip readers with actionable knowledge to tackle design complexities, foster innovation, and adapt to technological shifts. As you navigate through the posts, you will gain a deeper appreciation for how mobile technologies underpin modern connectivity, empowering you to apply these principles in your own work.
Role of OFDM Waveforms in 5G
Methodology for evaluating 5G waveform performance in single/mixed numerology downlink and asynchronous uplink, including user spectral efficiency and guard-band overhead.
5G Fronthaul, Middlehaul, and Backhaul Overview
Technical overview of 5G RAN logical architecture, CU/DU/AAU functional split, and the roles of fronthaul and associated transport links to the core network.
Why Mobile Phone Signals Weaken
Technical overview of mobile signal strength: causes from baseband and propagation obstacles, impact of antenna orientation and coverage design, plus RSRP measurement.
Air-to-Ground Communication: Channel Selection
Overview of air-to-ground communication: system model, channel selection (HF/VHF/microwave), propagation mechanisms, and Doppler shift estimation and compensation for aircraft.
3D and heterogeneous integration for 6G
Review of InP for 6G: InP HBT performance above 100 GHz and heterogeneous integration options (nanoridge growth, wafer reconstitution, 2.5D/3D).
5G Established, 6G Still Under Question
Analysis arguing 6G will be incremental rather than revolutionary, constrained by the Shannon limit, trade-offs, demand-side barriers, and terahertz/satellite limits.
Direct-Sequence vs Frequency-Hopping Spread Spectrum
Technical overview of spread spectrum communications, comparing DSSS and FHSS methods, their error-rate, capacity and reliability trade-offs, and common wireless applications.
What Is the Air Interface? 5G Network Options
Technical summary of the 5G NR air interface: radio access vs core separation, NSA/SA deployment paths, FR1/FR2 spectrum bands and flexible subcarrier spacing.
What Does "5G" Mean in Wi-Fi Names? 2.4GHz vs 5GHz
Explains why "5G" in a Wi?Fi SSID denotes the 5GHz band, compares 2.4GHz vs 5GHz range and throughput, and outlines antenna count and MIMO trade?offs.
How 5G Mobility Handovers Affect Applications
Overview of 5G research: measurements of mobility and handover effects, Prognos handover prediction, SA/NSA and bandwidth studies, SEED SIM diagnostics, and L25GC NFV core.
OTN vs FlexE for 5G Network Slicing
Technical overview of end-to-end 5G network slicing and transport options, comparing OTN and FlexE for hard vs. soft slicing and SLA-aware transport design.
