H04L27/2021 - CPC Classification Index

ClassID:

225956 ⎘

H04L27/2021 - CPC Classification

Classification description:

Modulated-carrier systems; Phase-modulated carrier systems, i.e. using phase-shift keying; Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change per symbol period is not constrained

Sub-classes:

H04L27/2025 » {in which the phase changes in a piecewise linear manner within each symbol period} 1
H04L27/2028 » {in which the phase changes are non-linear} 3

Recent Application in this class:

20210136568

2021-05-06

Featureless low-probability interception/detection waveform via continuously variable symbol rate transmission

20200280476

2020-09-03

Methods and communication apparatuses for bit-to-symbol mapping