The instant medium is a shared source. If within sight units transmit whilst, their signs intervene, leading to a collision. In conventional networks, collisions reason the lack of the transmitted details. as a result, instant networks were designed with the idea that interference is intrinsically destructive and needs to be refrained from.

This e-book, a revised model of the author's award-winning Ph.D. dissertation, takes an alternative process: rather than viewing interference as an inherently counterproductive phenomenon that are supposed to to be shunned, we layout sensible structures that rework interference right into a risk free, or even a valuable phenomenon. to accomplish this target, we examine how instant indications have interaction once they intrude, and use this figuring out in our procedure designs. in particular, whilst interference happens, the signs get combined at the instant medium. through figuring out the parameters of this blending, we will be able to invert the blending and decode the interfered packets; hence, making interference risk free. additionally, we will keep watch over this blending approach to create strategic interference that permit decodability at a specific receiver of curiosity, yet hinder decodability at accidental receivers and adversaries. consequently, we will be able to remodel interference right into a precious phenomenon that gives safeguard.

Building in this strategy, we make 4 major contributions: We current the 1st WiFi receiver which could effectively reconstruct the transmitted details within the presence of packet collisions. subsequent, we introduce a WiFi receiver layout that may decode within the presence of high-power cross-technology interference from units like child screens, cordless telephones, microwave ovens, or perhaps unknown applied sciences. We then express how we will harness interference to enhance defense. specifically, we advance the 1st approach that secures an insecure scientific implant with none amendment to the implant itself. eventually, we current an answer that establishes safe connections among any WiFi units, with no need clients input passwords or use pre-shared mystery keys.