[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 ...

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 ...

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 ...

Modern stealth starts with silence. In this episode, we unpack low probability of intercept - from simple emission control and directional antennas to frequency hopping, chirped signals, and direct ...

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 ...