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Class Information
Number: 370/483
Name: Multiplex communications > Communication techniques for information carried in plural channels > Combining or distributing information via frequency channels > Using angle modulation
Description: Subject matter using a modulation in which an angle of a sine wave carrier is a characteristic varied from its normal value by modulation.

Patents under this class:

Patent Number Title Of Patent Date Issued
8670789 Efficient paging in a wireless communication system Mar. 11, 2014
8660205 Energy efficient constellation method and system Feb. 25, 2014
8548007 Method of determining transmission rate of control response frame for acknowledging data receipt in wireless LAN Oct. 1, 2013
8537862 Transmit downlink control information with higher order modulation Sep. 17, 2013
8509351 Multi-mode radio frequency modulation circuitry Aug. 13, 2013
8295386 Nonlinear filter and transmission circuit Oct. 23, 2012
8072873 Adaptive coding and modulation using linked list data structures Dec. 6, 2011
7756001 Apparatus and method of deciding received symbol in M-PSK system Jul. 13, 2010
7675842 Adaptive coding and modulation using linked list data structures Mar. 9, 2010
7643438 Method of determining random access channel preamble detection performance in a communication system Jan. 5, 2010
7583702 Method of transmitting paging indicator and notification indicator and corresponding modulation and demodulation devices Sep. 1, 2009
7443919 Channel estimation for wireless systems with multiple transmit antennas Oct. 28, 2008
7127001 Channel estimation for wireless systems with multiple transit antennas Oct. 24, 2006
6999431 Voice over internet protocol Feb. 14, 2006
6940396 Concurrent phase communication in TWACS Sep. 6, 2005
6876672 Method of transmitting data on multiple carriers from a transmitter to a receiver and receiver designed to implement the said method Apr. 5, 2005
6704366 Time and frequency interleaving system for transmitting digital data between fixed or mobile stations Mar. 9, 2004
6693917 Digital subchannel transceiver for transmitting data Feb. 17, 2004
6587452 High performance signal structure with multiple modulation formats Jul. 1, 2003
6539008 Method for inserting power control bits in the CDMA mobile system Mar. 25, 2003
6477153 Method and apparatus for using the sidelobe of a long range antenna for a short range communication link Nov. 5, 2002
6456650 Splitterless modem using harmonics reduction Sep. 24, 2002
6381252 Method and system for managing communication resources Apr. 30, 2002
6181924 Method and system for rejecting interfering signals Jan. 30, 2001
5809030 Frequency division multiple access (FDMA) dedicated transmission system, transmitter and receiver used in such a transmission system Sep. 15, 1998
5666382 Method and apparatus for communicating in the presence of power and propulsion system interference Sep. 9, 1997
5636247 Information transmission system Jun. 3, 1997
5566207 Digital FM synthesizer for record circuitry Oct. 15, 1996
5559799 Modulator and demodulator apparatus as well as modulation and demodulation method Sep. 24, 1996
5533030 Radiotelephone system with the character of a local or auxiliary communications apparatus Jul. 2, 1996
5519732 Digital baseband to IF conversion in cellular base stations May. 21, 1996
5428600 Method and devices for transmitting data, particularly by satellite Jun. 27, 1995
5428610 FM radio system employing time shared wide SCA for digital data band Jun. 27, 1995
5128933 Process and device for the radio transmission of coded data superimposed on a traditional frequency-modulated broadcast Jul. 7, 1992
4962496 Transmission of data via power lines Oct. 9, 1990
4852086 SSB communication system with FM data capability Jul. 25, 1989
4704715 Information communication system Nov. 3, 1987
4680749 Duplex radio transceiver having improved data/tone and audio modulation architecture Jul. 14, 1987
4630134 System for recording and reproducing multiplex information Dec. 16, 1986
4523311 Simultaneous transmission of speech and data over an analog channel Jun. 11, 1985
4512013 Simultaneous transmission of speech and data over an analog channel Apr. 16, 1985
4489411 Process and a circuit arrangement for signal transmission using an amplitude-modulated radio broadcasting system Dec. 18, 1984
4379947 System for transmitting data simultaneously with audio Apr. 12, 1983
4302629 Digital data transmission system Nov. 24, 1981
4278952 Quantized angle modulator Jul. 14, 1981
3974337 FM television telephone system Aug. 10, 1976

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