Wireless technology is ubiquitous. The number of new wireless devices that can connect wirelessly is increasing, and their data consumption is growing day by day. The number of wireless devices and data consumption is increasing exponentially every year. To meet such demands, many organizations are researching new wireless technologies to improve existing wireless architectures. To … Read more

Radio Mods: Unlocking frequency limitations of the Yaesu FRG-8800 receiver Paolo Viappiani (SWL I1-11437) shares the following. Please note that, as with any radio equipment modifications, the risk of performing this task is your own. This is a very simple modification, but if you feel it may be beyond your skill level, consider hiring a … Read more

Background The SDI converter is a specialized device used to convert high-definition digital component serial interface (HD-SDI) signals into HDMI signals. It integrates an SDI receiver and an HDMI modulator, allowing for the easy conversion of HD-SDI signals to HDMI signals, while separating and embedding the audio signals carried by SDI into the HDMI signal … Read more

Starting to set up the transmission environment and getting it to run was much harder than simulation, especially dealing with the Linux system environment, as being unfamiliar with command line operations consumed a lot of time. I feel that my understanding of the equipment is not very accurate, but for now, the main goal is … Read more

The Optical Fiber Communication Conference & Exposition (OFC) is jointly organized by the Optical Society of America (OSA), the IEEE Communications Society (IEEE/ComSoc), and the IEEE Laser and Electro-Optics Society (IEEE/LEOS). OFC is the most significant event in the global optoelectronic communication exhibition and has been recognized as the highest standard, largest scale, oldest, most … Read more

Method 1 The RPX file is a binary file that helps you create reports and view graphical results through Tcl commands. The report commands supported by this interface include: report_drc, report_methodology, report_power, report_timing, report_timing_summary, and report_utilization. To create a binary report, you can issue a Tcl command using the –rpx option. When opening the design … Read more

Figure 1: 2001 Phantom v5 Video Camera The Phantom v5 is a high-speed, high-resolution camera launched by Vision Research in 2001, capable of capturing video at 1024×1024 pixels and 1000 frames per second. It has since been discontinued. Today, we will explore its internal workings through disassembly. Upon disassembly, we discovered that the timing and … Read more

Software Defined Radio (SDR) is a wireless communication technology that is based on software-defined radio protocols rather than through hardwired implementations. The bandwidth, air interface protocols, and functions can be upgraded via software downloads and updates without completely replacing the hardware. Today, we walk into a simplified SDR radio design with Uncle BG5WKP, which is … Read more

In 1991, Huawei established its own ASIC design center, specifically responsible for designing “Application-specific integrated circuits (ASICs).” At that time, Huawei had only been founded for four years, with only a few dozen employees, and was financially strapped, nearly on the brink of bankruptcy. The foundational C&C08 digital program-controlled switch was still three years away. … Read more

On ARMv7, we know that sp is R13, lr is R14, and PC is R15; on ARMV8, lr is x30, and sp and pc are no longer separate general-purpose registers. What is the reason for this design? 1. Why can’t sp and pc map to general-purpose registers? The reason for pc is to prevent users … Read more