chief of the Time and Frequency Division at NIST. Cesium fountain clocks such as NIST-F4 are a type of atomic clock—a complex, high-precision device that extracts timing pulses from atoms.

Abstract: As a superior multicarrier technique utilizing chirp signals for high-mobility communications, affine frequency division multiplexing (AFDM) is envisioned to be a promising candidate for ...

In the single-parameter case, the CRB is usually presented in two different equivalent forms as: 20,21,22 When multiple parameters are being estimated (e.g., amplitude, phase, frequency), the ...

Although initially approved as Amendment 1 (05/2013) to ITU-T G.9903 (2012), this text was published as Rec. ITU-T G.9903 (05/2013) Superseded ...

Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan ...