ClassID:

226064

H04L27/3477 - CPC Classification

Classification description:

Modulated-carrier systems; Carrier systems characterised by combinations of two or more of the types covered by groups , , or; Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems; Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel by using the outer points of the constellation or of the constituent two-dimensional constellations

Recent Application in this class:
#1
20250310172
2025-10-02

COMMUNICATING NONUNIFORM SOURCES USING SYSTEMATIC CODES

#2
20200244370
2020-07-30

Auxiliary channel in PAM/QAM systems using redundant constellation points

#3
20190268210
2019-08-29

Data transmission method and device using non-uniform APSK constellations

#4
20190199572
2019-06-27

COFDM DCM communications systems with preferred labeling diversity formats

#5
20180234285
2018-08-16

Antenna array based OAM wireless communication

#6
20180234236
2018-08-16

Multidimensional coded modulation for wireless communications with physical layer security

#7
20180234139
2018-08-16

Multidimensional coded modulation for wireless communications

#8
20180198563
2018-07-12

Space time labelling technique for wireless communication systems

#9
20180191549
2018-07-05

Apparatus and method for reusing existing constellation for superposed transmission

#10
20180183506
2018-06-28

Multiple access method in a massive MIMO system

#11
20160028435
2016-01-28

Efficient bandwidth utilization methods for CATV DOCSIS channels and other applications

#12
20140348514
2014-11-27

Method of converting an optical communications signal and an optical receiver

#13
20130265864
2013-10-10

Efficient bandwidth utilization methods for CATV DOCSIS channels and other applications

#14
20130163521
2013-06-27

Method and user equipment for transmitting uplink control information

#15
20100318796
2010-12-16

Method and system for securing wireless communications

#16
20100272210
2010-10-28

Method of transmitting data for digital broadcasting in wireless communication system

#17
20090028105
2009-01-29

Wireless access system and transmission method

#18
20080311918
2008-12-18

USF coding

#19
20060133338
2006-06-22

Method and system for securing wireless communications