Marc Lanoiselee
Marc Lanoiselee: Transmission system with suppressed carrier signal amplitude modulation preserving the polarity of the transmitted signal, and corresponding transmitter and receiver. L Etat Francais, Telediffusion de France, Merchant Gould Smith Edell Welter & Schmidt, December 31, 1991: US05077542 (15 worldwide citation)

A system of transmission with amplitude modulation for the transmission of signals of all types, analog and/or digital, requiring high performance characteristics with respect to the noise induced by the transmission channel, comprising, at transmission, means for the suppressed carrier amplitude mo ...

Elias Nemer
Elias Nemer, Ahmed Said: Method and apparatus for compensating I/Q imbalance in receivers. Intel Corporation, Blakely Sokoloff Taylor & Zafman, October 9, 2007: US07280619 (14 worldwide citation)

A method and apparatus for compensating I/Q imbalance in receivers is described. The method includes determining a difference between energies of two quadratures, correcting an amplitude imbalance using the difference between the energies of two quadratures, determining a cross-correlation between t ...

yuan xing Lee
George Mathew, Yuan Xing Lee, Hongwei Song, Liu Jingfeng, Jongseung Park: Systems and methods for adaptive equalization in recording channels. LSI Corporation, Hamilton DeSanctis & Cha, May 8, 2012: US08175201 (12 worldwide citation)

Various embodiments of the present invention provide systems and methods for performing adaptive equalization. For example, various embodiments of the present invention provide methods for adaptive equalization that include providing a data processing system with an equalizer circuit (210) and a tar ...

Ping Wen Ong: Navigation system with three-dimensional display. Lucent Technologies, Duane Morris & Heckscher, September 4, 2001: US06285317 (237 worldwide citation)

A navigation system for a mobile vehicle includes a vehicle position data generator for generating signals indicating location of the mobile vehicle, and scene information provider which generates information representative of the layouts of local environs at various locations and a display. A real ...

Arogyaswami J Paulraj, Robert W Heath Jr, Peroor K Sebastian, David J Gesbert: Spatial multiplexing in a cellular network. Gigabit Wireless, Beyer Weaver Thomas & Nguyen, May 23, 2000: US06067290 (217 worldwide citation)

The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A wireless cellular network for transmitting subscriber datastream(s) to corresponding o ...

David H Shen, Chien Meen Hwang, Bruce B Lusignan, Bruce A Wooley: Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion. Stanford University, Lumen Intellectual Property Services, June 17, 1997: US05640698 (202 worldwide citation)

An RF communications receiver permits greater integration on standard silicon chips and consumes less power than previous receivers. Sub-sampling and discrete-time signal processing techniques are used to frequency down-convert, filter, amplify, and select a desired analog RF channel. A sample-and-h ...

Mark R Gehring, Richard R Suter, Lawrence H Ragan: Direct conversion FM receiver with offset. AT&E Corporation, Klarquist Sparkman Campbell Leigh & Whinston, July 24, 1990: US04944025 (182 worldwide citation)

A direct conversion FM receiver that includes AC coupling and automatic gain control employs an offset frequency at the first local oscillator. The offset frequency prevents the frequency spectrum occupied by the signal modulation from being affected by AC coupling. The offset frequency is chosen so ...

Selim Shlomo Rakib, Yoram Zarai: Method and apparatus of using a bank of filters for excision of narrow band interference signal from CDMA signal. Terayon Communication Systems, Ronald C Fish, Ronald Craig Fish a Law Corporation, July 30, 2002: US06426983 (179 worldwide citation)

A narrow band interference excision circuit for use in broadband digital data communication systems such as CDMA systems. The excision circuit is comprised of a matrix of polyphase filters that divide the input signal into a plurality of narrow subbands. Each narrow subband signal is examined to det ...

Andrew J Viterbi, Nagabhushana T Sindhushayana: Soft decision output decoder for decoding convolutionally encoded codewords. QUALCOMM Incorporated, Russell B Miller, Thomas R Rouse, Kyong H Macek, August 3, 1999: US05933462 (173 worldwide citation)

A soft decision output decoder and decoding method. The decoder decodes a sequence of signals output by an encoder and transmitted over a channel. The soft decision output decoder includes a first "generalized" Viterbi decoder for decoding the sequence of signals received over the channel during a f ...

Gerard Joseph Foschini: Wireless communications system having a layered space-time architecture employing multi-element antennas. Lucent Technologies, August 1, 2000: US06097771 (167 worldwide citation)

The Shannon limit governs the ultimate bit rate at which a digital wireless communications system may communicate data. A digital wireless receiver may be enhanced such that it approaches the Shannon limit by decomposing a n-dimensional system into n-one dimensional systems of equal capacity.