In Chapter 2, two spectrum spreading methods were described: chirp and direct sequence. Other methods are frequency hopping and time hopping, as well as combinations of the four. This chapter deals ...

In this section, we will review LPI signals as a prelude to our discussions about jamming them. These signals spread their energy (pseudorandomly) across a wider frequency range than required to just ...

In 1940, Austrian-born Hedy Lamarr, considered one of the sexiest actresses of her time, was also a co-inventor of frequency hopping. She, along with George Antheil, an American composer ...

A wireless modulation method that rapidly changes the center frequency of a transmission. See spread spectrum and 802.11. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires ...