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Browse by Category: Main > Communications
Class Information
Number: 370/481
Name: Multiplex communications > Communication techniques for information carried in plural channels > Combining or distributing information via frequency channels > Multiple frequency translations
Description: Subject matter wherein a group of signals occupying a definite frequency band is transferred from one position in the frequency spectrum to another in such a way that the arithmetic frequency difference of signals within the band is unaltered.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8542626 Multi-spot transmission and reception system on board a satellite and satellite comprising such a system Sep. 24, 2013
8520700 Device for establishing communications interoperability at an incident site including means for recording crisis incidents Aug. 27, 2013
8509158 Reconfigurable notched spectrum for wireless data transmission Aug. 13, 2013
8411774 Method and apparatus to support scalability in a multicarrier network Apr. 2, 2013
8396042 Multiple access system and method for 60 GHz wireless communications system Mar. 12, 2013
8335225 OFDM communication system and method having a reduced peak-to-average power ratio Dec. 18, 2012
8335818 Method for detection of the activity of a device in a network of distributed stations, as well as a network station for carrying out the method Dec. 18, 2012
8315153 Wireless communications equipments with function of detecting random access signal, wireless communications systems with function of detecting random access signal and method of random access Nov. 20, 2012
8126503 Dynamic MIMO resource allocation during a single communication Feb. 28, 2012
RE43128 Method for transmitting data packets on carrier frequency with linear variation and transmitter implementing this method Jan. 24, 2012
8023574 Method and apparatus to support scalability in a multicarrier network Sep. 20, 2011
7995602 OFDM communication system and method having a reduced peak-to-average power ratio Aug. 9, 2011
7991013 Digital receiver for radio-frequency signals Aug. 2, 2011
7945407 Signal analyzers and frequency domain data production methods May. 17, 2011
7944995 Variable bandwidth receiver May. 17, 2011
7936788 Method and device for signal transporting May. 3, 2011
7894483 Multi-carrier communication via sub-carrier groups Feb. 22, 2011
7860130 Communicating signals through two twisted pairs Dec. 28, 2010
7852813 System and method for acquiring cell in a frequency overlay communication system Dec. 14, 2010
7848303 Satellite multi-choice switch system Dec. 7, 2010
7839947 Circuit and method for reducing the crest factor Nov. 23, 2010
7804763 Power line communication device and method Sep. 28, 2010
7769051 Optical transmission network with asynchronous mapping and demapping and digital wrapper frame for the same Aug. 3, 2010
7593473 Tree structured multicarrier multiple access systems Sep. 22, 2009
7558327 Pattern position measuring device, method, and program, and record medium on which the program is recorded Jul. 7, 2009
7558282 OFDM communication system and method having a reduced peak-to-average power ratio Jul. 7, 2009
7526018 Multi-standard transceiver for supporting wireless communications in 2.3-2.4 GHz band Apr. 28, 2009
7453895 Outlet with analog signal adapter, a method for use thereof and a network using said outlet Nov. 18, 2008
7440459 Methods of detecting protocol support in wireless communication systems Oct. 21, 2008
7436842 Outlet with analog signal adapter, a method for use thereof and a network using said outlet Oct. 14, 2008
7414993 Intelligent channel selection apparatus and method against various interferers in wireless communication systems and receiver using the same Aug. 19, 2008
7356048 Method and apparatus for network modems on a shared communications channel Apr. 8, 2008
7352991 Satellite signal distribution systems Apr. 1, 2008
7340622 Method and apparatus for selectively increasing the operating speed of an electronic circuit Mar. 4, 2008
7206317 OFDM communication system and method having a reduced peak-to-average power ratio Apr. 17, 2007
7171570 Method and apparatus for selectively increasing the operating speed of an electronic circuit Jan. 30, 2007
7113522 Enhanced conversion of wideband signals to narrowband signals Sep. 26, 2006
7031335 Digital node for hybrid fiber/coax network Apr. 18, 2006
6967966 Digital return path for hybrid fiber/coax network Nov. 22, 2005
6928084 OFDM communication system and method having a reduced peak-to-average power ratio Aug. 9, 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
6747945 OFDM transmitting and receiving apparatus and OFDM transmitting and receiving method Jun. 8, 2004
6714529 Variable transmission rate digital modem with multi-rate filter bank Mar. 30, 2004
6643723 Method and apparatus for releasing bus control by a device connected to the bus Nov. 4, 2003
6628673 Scalable communication system using overlaid signals and multi-carrier frequency communication Sep. 30, 2003
6625174 Method for transmitting data packets on carrier frequency with linear variation and transmitter implementing this method Sep. 23, 2003
6590871 Multi-carrier modulation apparatus and transmitter using the same Jul. 8, 2003
6487252 Wireless communication system and method for synchronization Nov. 26, 2002
6477182 Data transmission method and apparatus Nov. 5, 2002
6449258 Intermediate repeater for a communication network for the reception and forwarding of frequency multiplexed signals Sep. 10, 2002

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