Never miss a story

Get subscribed to our newsletter


×

Washington: A team of US Engineers which included and Indian origin researcher demonstrated that it is possible to generate Wi-Fi transmissions using 10,000 less power than conventional methods. This is an attempt to save more energy while playing games and doing other things that eat more energy.

The new “Passive Wi-Fi” system also consumes 1,000 times less power than existing energy-efficient wireless communication platforms, such as Bluetooth Low Energy and Zigbee, said computer scientists and electrical engineers from the University of Washington.


“We wanted to see if we could achieve Wi-Fi transmissions using almost no power at all. That is basically what ‘Passive Wi-Fi’ delivers. We can get Wi-Fi for 10,000 times less power than the best thing that’s out there,” said study co-author Shyam Gollakota, assistant professor of computer science and engineering.

“Passive Wi-Fi” can for the first time transmit Wi-Fi signals at bit rates of up to 11 megabits per second that can be decoded on any of the billions of devices with Wi-Fi connectivity. These speeds are lower than the maximum Wi-Fi speeds but 11 times higher than Bluetooth. Apart from saving battery life, wireless communication that uses almost no power will help enable an “Internet of Things” reality where household devices and wearable sensors can communicate using Wi-Fi without worrying about power.

“All the networking, heavy-lifting, and power-consuming pieces are done by the one plugged-in device. The passive devices are only reflecting to generate the Wi-Fi packets, which is a really energy-efficient way to communicate,” explained co-author Vamsi Talla, an electrical engineering doctoral student. To achieve such low-power Wi-Fi transmissions, the team essentially decoupled the digital and analog operations involved in radio transmissions.

The Passive Wi-Fi architecture assigns the analog, power-intensive functions – like producing a signal at a specific frequency — to a single device in the network that is plugged into the wall. An array of sensors produces Wi-Fi packets of information using very little power by simply reflecting and absorbing that signal using a digital switch.

In real-world conditions on the university campus, the team found the passive Wi-Fi sensors and a smartphone can communicate even at distances of 100 feet between them. Because the sensors are creating actual Wi-Fi packets, they can communicate with any Wi-Fi enabled device right out of the box. “Our sensors can talk to any router, smartphone, tablet or other electronic device with a Wi-Fi chipset,” noted electrical engineering doctoral student Bryce Kellogg.

The technology can enable entirely new types of communication that haven’t been possible because energy demands have outstripped available power supplies. It could also simplify our data-intensive worlds. “Now that we can achieve Wi-Fi for tens of microwatts of power and can do much better than both Bluetooth and ZigBee, you could now imagine using Wi-Fi for everything,” said Joshua Smith, associate professor of computer science and engineering.

The technology has also been named one of the 10 breakthrough technologies of 2016 by the journal MIT Technology Review. A paper describing those results will be presented in March at the 13th USENIX Symposium on Networked Systems Design and Implementation in California. (IANS)


Popular

Photo by Boxed Water Is Better on Unsplash

What about picnics by waterfalls and long, rambling walks to discover unexplored lakes? That's just the thing about mountains.

Tired of waking up to the usual alarm? How about starting your mornings with the sounds of birds chirping instead, with the added bonus of lush, green afternoons, and nights spent under brightly lit skies? What about picnics by waterfalls and long, rambling walks to discover unexplored lakes? That's just the thing about mountains. You won't know the wonders you can come across, or the experiences you can have. All of this makes the mountains the perfect escape from the city.

Here are some suggestions from Airbnb with stays and experiences that can set the backdrop for the perfect mountainous holiday.

Seclude Ramgarh -- Grishma- Nainital
Forget finding shapes in clouds, learn what it's like to live in them instead. At 4900 feet above the ground, your head will indeed be in the clouds at this secluded stay in Ramgarh. The hill station boasts of a cool climate throughout the year, and with plenty of outdoor areas, balconies, and large windows, you can make the most of the idyllic weather. Seclude Ramgarh is also home to a large common fire pit to warm up your evenings and make it a truly immersive experience.

boat on sea near mountain under white clouds and blue sky during daytime At 4900 feet above the ground, your head will indeed be in the clouds at this secluded stay in Ramgarh. | Photo by Anubhav Rana on Unsplash

Keep Reading Show less
Photo by Anupam Mahapatra on Unsplash

Regular physical exercise may significantly enhance your quality of life.

Physical activity or exercise may help you maintain a healthy lifestyle and lower your chances of acquiring many illnesses. Regular physical exercise may significantly enhance your quality of life. So, start your day off right with these workouts that incorporate strength and flexibility.

Stretching

woman in white sports bra and black leggings stretching

Begin by stretching your muscles | Photo by Chalo Garcia on Unsplash

Start extending your arms and feel your whole body stretch from the soles of your feet to the tip of your fingers. Take three to four long, deep breaths to calm yourself. Keep stretching for about 2-3 minutes

Plank

person planking on floor

Planking helps to maintain balance and coordination. | Photo by Sergio Pedemonte on Unsplash

Take a pushup posture, with the weight of the body resting on the forearms, elbows, and toes. It is important to have the arms exactly below your shoulders, with your whole body in a straight line and your back straight. Hold the same posture for 30 seconds and repead thrice in total.

Pushups

man in white tank top and gray shorts doing pushup

Pushups help in building upper body strength. | Photo by Fortune Vieyra on Unsplash

Place your hands approximately 36 inches apart on the floor while keeping your body at arms' length. Lower your chest nearly to the floor when you take a breath in and exhale. Taking a deep breath out, push your upper body back up to the beginning position while tightening your chest muscles. Do 3 sets with atleast 8 pushups in each set.

Mountain Climber

Man in black shirt and shots doing exrecise

The mountain climber really is a full-body exercise. | Flickr

Take a top press-up position, weight on hands and toes, arms straight, legs extended. Bring one knee to your chest, then return it to the starting position. Rep with your opposite leg, then alternate legs throughout. Do 3 sets with 12 repititions in each set.

Jumping Jacks

woman in black dress standing on beach during daytime

Jumping Jacks are a basic, easy-to-do exercise that can be done anywhere and at any time. | Photo by Rodrigo dos Reis on Unsplash

Stand with your legs together, your knees slightly bent, and your hands resting on your thighs. Open the arms and legs out to the sides, keeping the knees bent. Arms extend beyond the shoulders, and legs broader than the shoulders. Return to your starting position by bringing your arms and legs back to your sides. You can do jumping jacks as fast as you can and for as many minutes you wish.


Keep Reading Show less
Photo found on Google Images

Savitribai Khanolkar, the designer of Param Vir Chakra

Eve Yvonne Maday de Maros, the woman who designed the Param Vir Chakra, was born in 1913 in Neuchatel, Switzerland. It was believed that she came to India to understand the country's culture and tradition.

She got to know about India's spiritual and cultural wealth at a very early age through holistic education which she received. Soon, Eve Yvonne fell in love with a Maharashtrian named Vikram Khanolkar, who was a young army officer, and was undergoing training at the Royal Military Academy in the United Kingdom.

Keep reading... Show less