Communication Technology

Advances in communication technology are leading the way for big changes in how we live. Here we explore new innovations and what they mean for our daily lives.

License-free Radio for Wireless Networks

Icom has announced a new concept in radio communications, a Wi-Fi radio.  The new Icom IP100H radio easily connects to any existing wireless local area network (WLAN). Offering scalable, license-free communication using standard wireless network products. Businesses with wireless networks already in place can quickly establish high-quality mobile communications within their IP network. The IP100H radio can move freely within the IP network, automatically connecting to the closest access point, then moving between access points automatically. You can easily expand coverage of your radio system by...

New Digital Radios - A Revolution Is Underway

Remember analog TV? The picture was fuzzy and functions like video on-demand were not possible. Today's digital TVs have pictures so clear they seem better than reality sometimes. And you can stream video from numerous sources, surf the web, or make video phone calls.
 
The same transformation occurred with phones. Voice distortion, background noise, and static are common in analog phones. Think 'cell phones' when you think about the quality of digital voice communications. Yes there may be some dead spots, but generally the audio is very clear. And let's not forget about all the apps now...

Posted by in General Radio Info, Communication Technology on October 22, 2013 .
How Does Radio Encryption Work?

Encryption is the process of encoding information (in this case audio signals) in such a way that eavesdroppers or hackers cannot understand it, but authorized parties can access it. In two-way radios encryption modifies a voice signal using a coding algorithm. This algorithm is controlled by an encryption key. The encryption key is used by the transmit and receive radios to enable the voice signal to be coded and decoded for both radios. Therefore, all radios communicating must have matching encryption keys to receive transmissions.

Fig. 1 - Simple Voice Inversion...

Engineers at University of Washington have created a new wireless communication technology where devices communicate without relying on any form of power.  This new technology, researchers call "ambient back-scatter", uses existing TV and cellular signals already in the space around us.  These new devices communicate by reflecting existing signals to exchange information with each other. The researchers built small, battery-free devices with antennas that detect, harness, and reflect a TV's signal. These reflected signals are then picked up by other similar devices.  The technology could enable a network of devices to communicate with no...

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