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EPON access technology principle and networking application

The EPON network adopts the FTTB method to form the network, and the basic unit of the network is the OLT and the ONU. OLT provides abundant PON ports for central office equipment to connect ONU equipment; ONU is user equipment that provides corresponding data and voice interfaces to realize user... Read More

iOS 15.4 rollover: battery life crashes after update

For those who upgraded to iOS 15.4, is your iPhone powering down a little faster? https://www.smart-xlink.com/products.html More and more people are reporting poor battery life after OTA upgrades. In severe cases, a model with a large battery like the iPhone 13 Pro Max can only last for half a da... Read More

What are the advantages of HDV Optoelectronics Technology’ products ？

The advantages of HDV are mainly concentrated in two aspects: enterprise strength and products. First of all, enterprise strength From the perspective of Haidiwei’s own corporate strength, the company was established in 2012 and is headquartered in Shenzhen, Guangdong Province, China. HDV i... Read More

Where can IP cameras be used? How to Deploy IP Cameras with PoE Switches

Application Scenarios for Deploying IP Surveillance Cameras on PoE Switches Using PoE switches to deploy IP cameras can save time and network costs; at the same time, the installation position of IP cameras is not limited by power sockets, making installation more flexible and convenient. Based o... Read More

Signal constellation shaping  

Zhi Zhang et al. from the School of Communication and Information Engineering, University of Electronic Science and Technology of China designed a constellation Reshaping chaotic encryption (CSCEn) scheme with statistical distribution controllable, as shown in FIG 2.  Firstly, orthogonal amplitud... Read More

Development of Optical Fiber Access Technology and Optical Fiber Communication Technology

[Introduction] The wavelength division multiplexing technology can make full use of the huge bandwidth resources brought by the low-loss area of single-mode fiber. According to the frequency (or wavelength) of the light wave of each channel, divide the low-loss window of the fiber into several ch... Read More