Language Selection

English French German Italian Portuguese Spanish

New Software Changes Wireless Technology Functions on Demand

Filed under
Sci/Tech

Imagine an electronic gadget, like your cell phone, evolving into the next generation of communication devices through the use of radio technology. From the prospect of downloading software to adapt a cell phone into a video camera or MP3 player, to the idea that satellites could interact and share data directly by configuring themselves, the possibilities for SDR are without bound.

Researchers at NASA's Goddard Space Flight Center in Greenbelt, Md., are so enthusiastic about SDR that they have recently built an SDR test-bed - providing the necessary foundation for investigating SDR technologies and techniques. This test-bed allows for the rapid, low-cost development of communication and navigation algorithms that will be used in upcoming technology experiments, and eventually, in missions.

Software Defined Radio is a relatively new wireless technology based on the familiar radio technology that has been used for many years. Traditional Earth-based radio technology involves the transmission of a signal, typically "analog" speech or music, as electromagnetic waves using a single purpose radio transmitter. The electromagnetic waves travel through the air until they encounter a radio receiver that has been tuned to receive the right frequency. This receiver processes the signal and sends the result to a speaker. You then hear whatever was broadcast from the radio station. In SDR, the transmitter modulation is produced by a digital signal processor (a form of computer) to produce digital signals, the signals are then converted to "analog" and sent to the transmitter's antenna. The receiver uses a computer to recover the signal intelligence.

Full Story.

More in Tux Machines

Ubuntu bq Aquaris M10 Review Part 2: Software

In part one of our rather lengthy review, we took a look at the bq Aquaris M10 Ubuntu tablet's hardware. Suffice it to say, it perfectly played the role of a mid-range tablet. While the device had a few ups, like its lightweight design, bright display, and substantial battery, it would have been easily passed for a mediocre slab if not for the software running on it. In this round, we take a deeper look into what makes this tablet truly one of a kind, and almost literally too. This time, we take a dive into the alien world of Ubuntu Touch. Read more

Best Linux Distro: Linux for old laptops, privacy and USB sticks

Best Linux distro The best Linux distro is a matter of personal taste and use case. On the following pages, we take you through four potential Linux use cases and select the best for each. We'll look at the best overall OS for general computing, the best for an old laptop, a lightweight distro for USB drives and a privacy-focused option. Read more

Pravin Satpute: How do you Fedora?

Pravin Satpute started using Linux in 2004 when he was working with Dr. Nagarjuna Gadiraju of the Free Software Foundation of India. He was working on a project to develop libre fonts for Indian languages. At that time, he was using Knoppix with the KDE desktop. In 2006, he became interested in Fedora and starting using Red Hat Enterprise Linux (RHEL) in 2007 when he was given a laptop with RHEL 5. Quickly after receiving the laptop, he switched to Fedora 8. His childhood heroes were Steve Jobs, Ratan Tata and Sachin Tendulkar. His favorite movies are Inception and The Mummy. Read more

QNAP and Canonical Optimize Ubuntu For IoT Purposes

The Internet Of Things movement has attracted a lot of attention in recent years. Not just enthusiasts, but also major firms in the technology sector are working on developing new IoT initiatives. A Partnership between QNAP and Canonical will help optimize Ubuntu on NAS systems for Internet of Things applications. Read more