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Lei Xu patents

Recent bibliographic sampling of Lei Xu patents listed/published in the public domain by the USPTO (USPTO Patent Application #,Title):



08/14/14 - 20140226975 - Method and apparatus for boosting data intensive processing through optical circuit switching
07/24/14 - 20140205283 - Multidimensional coded-modulation for high-speed optical transport over few-mode fibers
05/01/14 - 20140119728 - Method and apparatus for implementing a multi-dimensional optical circuit switching fabric
08/15/13 - 20130209035 - Optical dispersion compensation module using fiber bragg grating with multiple degrees of freedom for the optical field
05/02/13 - 20130108270 - Variable bit-rate qpsk transmitter and method employing polarization manipulation
04/18/13 - 20130094851 - Optical spectral shaping for nonlinearity enhancement in high speed digital coherent optical transmissions
04/11/13 - 20130091399 - High-speed long codeword qc-ldpc soft decision decoder
04/11/13 - 20130091398 - Optimum signal constellation design for high-speed optical transmission
04/11/13 - 20130089327 - Polarization switching for optical fiber communications
04/11/13 - 20130089326 - Nonbinary ldpc coded modulation without bandwidth expansion for high-speed optical transmission
12/20/12 - 20120321318 - Carrier and subcarrier hopping for optical ofdm security
12/20/12 - 20120321311 - Coherent interleaved polarization-multiplexing optical communications with single iq modulator
12/20/12 - 20120321303 - Multiple-symbol polarization switching for differential-detection modulation formats
12/06/12 - 20120307933 - Energy efficient constellation method and system
10/18/12 - 20120263468 - Generation of optical quadrature duobinary format using optical delay
10/18/12 - 20120263466 - Multidimensional hybrid modulations for ultra-high-speed optical transport
10/18/12 - 20120263251 - Generalized ofdm (gofdm) for ultra-high-speed serial optical transport networks
10/11/12 - 20120260142 - Four-dimensional non-binary ldpc-coded modulation schemes for ultra high-speed optical fiber communication
10/11/12 - 20120257896 - Coded multidimensional pulse amplitude modulation for ultra-high-speed optical transport
10/11/12 - 20120257895 - Four-dimensional optical multiband-ofdm for beyond 1.4tb/s serial optical transmission
10/04/12 - 20120251111 - Optoelectronic wavelength converter for polarization multiplexed optical signals
10/04/12 - 20120251028 - Polarization-alternating optical signal generation using csrz modulation
08/23/12 - 20120216093 - Soft-decision non-binary ldpc coding for ultra-long-haul optical transoceanic transmissions
08/16/12 - 20120207470 - Spatial domain based multi dimensional coded modulation for multi tb per second serial optical transport networks
05/03/12 - 20120106983 - Optimized normalized least mean square phase estimation
04/26/12 - 20120099863 - Hybrid optical/electrical switching system for data center networks
04/05/12 - 20120084617 - Modified progressive edge-growth ldpc codes for ultra-high-speed serial optical transport
03/01/12 - 20120051452 - Modified coded hybrid subcarrier amplitude phase polarization modulation
02/23/12 - 20120047415 - Reverse concatenated encoding and decoding
01/12/12 - 20120008945 - Optical switching network
01/12/12 - 20120008944 - Optical switching network
01/12/12 - 20120008943 - Optical switching network
12/22/11 - 20110314352 - Reduced-complexity ldpc decoding
08/11/11 - 20110194855 - Superimposed training and digital filtering coherent optical receivers
07/28/11 - 20110182428 - Secure communication over passive optical network (pon) with quantum encryption
04/14/11 - 20110085797 - Ultra wide-range frequency offset estimation for digital coherent optical receivers
04/14/11 - 20110085624 - Coded polarization-multiplexed iterative polar modulation
09/30/10 - 20100247104 - Optical communication system and method for generating dark return-to-zero and dwdm optical mm-wave generation for rof downstream link using optical phase modulator and optical interleaver
09/16/10 - 20100232804 - Methods and systems for polarization multiplexed multilevel modulation for optical communication
09/16/10 - 20100232803 - Integrated equalizer and michelson interferometer structure for inter-symbol interference-suppressed colorless dpsk demodulation
09/16/10 - 20100232789 - Modified michelson interferometer structure for inter-symbol interference-suppressed colorless dpsk demodulation
08/26/10 - 20100215371 - Polarization mode dispersion (pmd) compensation in polarization multiplexed coded orthogonal frequency division multiplexing (ofdm) systems
08/19/10 - 20100211849 - Multi-dimensional ldpc coded modulation for high-speed optical transmission systems
04/08/10 - 20100088571 - High speed ldpc decoding
04/08/10 - 20100086314 - Method and apparatus for an optical duty cycle for an optical digital coherent system
02/25/10 - 20100050048 - Mitigation of fiber nonlinearities in multilevel coded-modulation schemes
02/04/10 - 20100027994 - Phase modulation of an optical orthogonal frequency division multiplexing signal
12/03/09 - 20090297144 - Polarization mode dispersion compensation in multilevel coded-modulation schemes using blast algorithm and iterative polarization cancellation
11/19/09 - 20090285577 - Optical frontend for integration of optical and wireless networks
11/12/09 - 20090282314 - Multidimensional turbo product codes and generalized low-density parity-check codes with component reed-solomon codes for optical transmission
11/05/09 - 20090274460 - Differential delay receiver using cross-polarization interferometer for polmux-dpsk system
10/15/09 - 20090259912 - Ldpc codes and stochastic decoding for optical transmission
10/01/09 - 20090245810 - Dynamic signal equalization in optical transmission systems
09/17/09 - 20090235143 - Ldpc-coded multilevel modulation scheme
09/10/09 - 20090228766 - Simulatenous pmd compensation and chromatic dispersion compensation using ldpc coded ofdm
08/13/09 - 20090202243 - Direct detection for receiving polarization multiplexing signals
08/06/09 - 20090199065 - Gldpc encoding with reed-muller component codes for optical communications
07/09/09 - 20090177945 - Polarization mode dispersion compensation using bcjr equalizer and iterative ldpc decoding
06/25/09 - 20090162066 - Intra-channel equalizing optical interleaver
04/09/09 - 20090092393 - Coherent optical orthogonal frequency division multiplexing (ofdm) reception using self optical carrier extraction
03/05/09 - 20090059351 - Demodulator system and method using multilevel differential phase shift keying
02/26/09 - 20090052907 - Wavelength transmission system and method using 3-dimensional ldpc-coded modulation
Sodero Networks, Nec Laboratories America, Nec Laboratories AmericaInc, Nec Laboratories America Inc

Archived*
(*May have duplicates - we are upgrading our archive.)

20120321318 - Carrier and subcarrier hopping for optical ofdm security


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The bibliographic references displayed about Lei Xu's patents are for a recent sample of Lei Xu's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Lei Xu filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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