[Michael Ossmann] spoke on Friday to a packed house in the wireless hacking village at DEF CON 25. There’s still a day and a half of talks remaining but it will be hard for anything to unseat his ...

Spread spectrum technology has blossomed from a military technology into one of the fundamental building blocks in current and next-generation wireless systems. From cellular to cordless to wireless ...

Modern stealth starts with silence. In this episode, we unpack low probability of intercept - from simple emission control ...

A radio technique that continuously alters its transmission pattern either by constantly changing carrier frequencies or by constantly changing the data pattern. DSSS multiplies the data bits by a ...

In a vision shared by innovators, entrepreneurs, and planners in both defense and civilian contexts, the skies of the future will be busy with unmanned aerial vehicles (UAVs). Unseen but central to ...

Amiccom released 2.4GHz direct-sequence spread-spectrum wireless chip in June 2020, named A7157, which supports FSK and DSSS modulation operation modes. In FSK mode, A7157 is a high-speed (4Mbps) RF ...

Also known as "Walsh-Hadamard code," it is an algorithm that generates statistically unique sets of numbers for use in encryption and cellular communications. Known as "pseudo-random noise codes," ...

Fig 1. Among the protocol stack layers for IEEE 802.15.4, only layers 1 and 2 belong to the standard, while the upper layers are defined by the specific protocol (e.g., ZigBee, 6LoWPAN, and ...