Electronic parts information details information database from easybom.com? Orthogonal frequency division multiple access OFDMA: Friends who are familiar with Wi-Fi should know that the empty port of Wi-Fi adopts orthogonal frequency division multiplexing (OFDM) modulation, that is, the whole bandwidth is composed of orthogonal subcarriers. In Wi-Fi 6, the 802.11 working group introduced OFDMA access from LTE. The addition of such an “A” word can be said to have brought a qualitative change to the network capacity. As shown in the figure on the left below, Wi-Fi 5-based OFDM can only allocate all the bandwidth in the channel to one user at any one time, even if that user’s data needs do not need to take up all the bandwidth. When other users connect to the network, they need to wait for the next sending opportunity window (TXOP). This is very inefficient in the use of channel resources, especially when there is a significant increase in equipment. Read more information at ecs-250-18-5px-f-tr.
From the perspective of automakers, semiconductors will not be enough until 2024,” read next to the big news in the April 30 edition of the Nikkei News. In this article, Intel CEO Pat Gelsinger said at its financial results conference on April 28 that “due to capacity and production equipment constraints, semiconductor shortages will last until at least 2024. How long will this shortage of semiconductors last? I began to think that, as Intel’s chief executive said, “at least until 2024”, the semiconductor shortage will not disappear, and the semiconductor shortage will last for a long time. In this article, I would like to discuss the basic principles. If we come to a conclusion first, we speculate that there will be a long-term shortage of traditional analog and power semiconductors in the future due to the following reasons.
SoC (SystemonChip): refers to a system on a chip, that is, integrating multiple electronic systems into a single chip, which can process digital signals, analog signals, and even mixed signals, and is often used in embedded systems. SoC is a system-level chip, which has the characteristics of high integration of MCU and supercomputing power of MPU, that is, it has built-in RAM and ROM and is as powerful as MPU. The SoC can store and run system-level code, that is, it can run an operating system (mainly LinuxOS). It can be compared in this way: MCU is only a chip-level chip, while SoC is a system-level chip. It integrates the advantages of MCU and MPU, that is, it has built-in RAM and ROM and is as powerful as MPU.
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