▲ For more exciting content, please click the blue text above to follow us! Nowadays, the variety and quantity of sensors are increasing, and many of these sensors utilize analog signals, which rely on ADC. However, the analog signals collected by our microcontroller’s ADC generally undergo “filtering” processing before they can be used. Below, we … Read more
Foreign Media: Wi-Fi Will Fade into Obscurity, Unlimited Data is the Trend Source: Bloomberg, Sina Technology Bloomberg published an article yesterday stating that whether it is smartphones, smart thermostats, or televisions, almost every internet-connected device has a “Wi-Fi” icon. However, it is believed that soon, Wi-Fi will be forgotten by people. Currently, major mobile operators … Read more
1. 5G NR (Standard not completed, recommended to pay attention) 2. LTE/LTE-Advanced/LTE-Advanced Pro 3. WCDMA/HSPA/HSPA+ 4. TD-SCDMA 5. GSM/GPRS/EDGE/EDGE Evolution/VAMOS Note: P-GSM, standard GSM-900 frequency band; E-GSM, extended GSM-900 frequency band (including standard GSM-900 frequency band); R-GSM, railway GSM-900 frequency band (including standard and extended GSM-900 frequency bands); T-GSM, cluster wireless system-GSM; ER-GSM900, which is … Read more
[Introduction] Ah, you have been successfully drawn in, not quite what you expected, huh?~~~ Just kidding, back to the point. Today, a netizen asked me a question about a sensor measuring a physical quantity and needing to determine its trend of change. I provided some suggestions, and here I will elaborate on those suggestions and … Read more
Semiconductor Industry Observation（icbank） Semiconductor Industry Observation: The first vertical media in the semiconductor industry【www.icbank.cc】 Author: Junko Yoshida With advancements in LTE technologies such as LTE Advanced and LTE Advanced Pro, the industry has been stirred up—triggering a series of new demands that make next-generation baseband designs more complex than any previous generation of smartphone modem … Read more
The potential difference generated by the Hall effect is very small, often only a few microvolts. Therefore, Hall sensors often have a built-in high-gain operational amplifier and may be combined with other system circuits based on overall requirements. The overall architecture is shown below. Typically, the final output signals from Hall sensors can be either … Read more
Author Introduction: Tony, a teacher at Chongqing University of Posts and Telecommunications, has participated in the development of TSM, GSM, TD-SCDMA, and LTE basebands. He was previously the group leader of the system engineering team for the LTE baseband chip development project. Currently, he focuses on LTE-Advanced PRO and 5G technology research, with a particular … Read more
Abstract:The random access process, as an important procedure for achieving UE initial access and uplink synchronization, has been simplified and modified in NB-IoT based on the LTE system. By comparing with the random access process in the LTE system, an in-depth analysis of the currently supported contention-based random access process in NB-IoT is conducted, and … Read more
The development of NB-IoT standardization in the past year of 2016 has created an urgent demand for commercial deployment. Many mainstream telecom operators, such as Deutsche Telekom and Vodafone UK, are carrying out large-scale deployments and promotions. Currently, there are three deployment options: 1. Deploying in the same frequency band as LTE 2. Deploying at … Read more
Abstract: NB-IoT is an emerging cellular technology that better supports applications requiring large connections, low power consumption, low throughput, low device costs, and high latency tolerance. Compared to LTE systems, the random access channel NPRACH in the NB-IoT system has been redesigned. A detailed analysis of the structural design of NPRACH in the NB-IoT system … Read more