公开(公告)号：EP2959602A1

公开(公告)日：2015-12-30

申请号：EP14811532.2

申请日：2014-06-13

Applicant: Comtech EF Data Corp.

Inventor： SOCHACKI, John

IPC: H04B1/62 ,  H04B7/005 ,  H03F1/32

CPC classification number: H04B1/62 ,  H03F1/3241 ,  H03F1/3247 ,  H03F1/3258 ,  H04B1/0475 ,  H04B2001/0425

Abstract: A method of generating N
th order product predistortion coefficients for use by a linearizer in a non-linear communications system comprising receiving an input signal by a processor, applying, by the processor, a frequency domain-based adaptation algorithm by measuring N
th order products of an output signal of the system and iteratively adjusting a predistortion coefficient of a predistorter until the N
th order product is substantially equal to a predetermined minimum value.

公开(公告)号：EP2941828A1

公开(公告)日：2015-11-11

申请号：EP13882343.0

申请日：2013-11-14

Applicant: Comtech EF Data Corp.

Inventor： PENG, Lianfeng

IPC: H04B1/7156

CPC classification number: H04B1/7073 ,  H04B1/709

Abstract: A method of detecting FN code synchronization for a DSSS signal comprising receiving a DSSS data signal of data frames comprised of I and Q symbols, at least a portion of each data frame comprising a unique word, demodulating the data signal into I and Q chip samples, filtering the I and Q chip samples and outputting the filtered I and Q chip samples to a chip stream controller which outputs the plurality of chip streams to a correlation matrix that correlates the plurality of chip streams with the chipped unique word and outputs a correlated data stream, A plurality of FFTs is run on the correlated output data stream and a processor searches for a maximum frequency bin power of each FF'T. A PN synchronization detector searches for a maximum frequency bin power among the plurality of FFT runs and determines whether PN synchronization is present.

公开(公告)号：EP2772087A4

公开(公告)日：2015-07-15

申请号：EP12864754

申请日：2012-12-19

Applicant: COMTECH EF DATA CORP

Inventor： MAMARIL CRIS M ,  BEELER MICHAEL ,  DAVIS WALLACE

IPC: H04B7/185 ,  H04B17/40

CPC classification number: H04W52/36 ,  H04B7/0678 ,  H04B7/18513 ,  H04L1/0003 ,  H04L1/0041 ,  H04W52/243 ,  H04W76/04

Abstract: A method of reducing adjacent satellite interference, the method comprising monitoring, by a processor, a power spectral density (PSD) of a signal transmitted by a remote transmitter, determining, by the processor, that the PSD of the signal transmitted by the remote transmitter is above a predetermined level, and reducing the PSD of the signal transmitted by the remote transmitter by adjusting at least one of a spread spectrum spreading factor, a power level, a modulation factor, and a forward error correction (FEC) rate using a modulator while maintaining a constant spectral allocation and center frequency of the signal.

公开(公告)号：EP2772022A4

公开(公告)日：2015-04-01

申请号：EP13743110

申请日：2013-01-31

Applicant: COMTECH EF DATA CORP

Inventor： BEELER MICHAEL ,  BADDICK JOHN ,  DAVIS WALLACE

IPC: H04L12/24 ,  G06F17/00 ,  H04L12/26 ,  H04W24/00

CPC classification number: H04W16/22 ,  H04L41/145 ,  H04W24/02

公开(公告)号：EP2777237A1

公开(公告)日：2014-09-17

申请号：EP12875919.8

申请日：2012-05-04

Applicant: Comtech EF Data Corp.

Inventor： BEELER, Michael ,  MAMARIL, Cris ,  HARIG, Jeffrey

IPC: H04L27/26 ,  H04B1/707

CPC classification number: H04B1/707

Abstract: A method for identifying the presence of an electronic transmission comprising detecting, by a detecting device, the presence of a burst of electromagnetic energy that results from the presence of an original carrier signal and transmitting, by a transmitting device, a spread spectrum meta-carrier signal within a portion of a bandwidth of the original carrier signal, wherein the meta-carrier signal contains information about the original carrier signal and is transmitted such that the meta-carrier signal occupies at least a portion of a bandwidth of the original earner signal during the presence of the burst of electromagnetic energy.

公开(公告)号：EP2772087A1

公开(公告)日：2014-09-03

申请号：EP12864754.2

申请日：2012-12-19

Applicant: Comtech EF Data Corp.

Inventor： MAMARIL, Cris, M. ,  BEELER, Michael ,  DAVIS, Wallace

IPC: H04W24/00 ,  H04B7/185

CPC classification number: H04W52/36 ,  H04B7/0678 ,  H04B7/18513 ,  H04L1/0003 ,  H04L1/0041 ,  H04W52/243 ,  H04W76/20

Abstract: A method of reducing adjacent satellite interference, the method comprising monitoring, by a processor, a power spectral density (PSD) of a signal transmitted by a remote transmitter, determining, by the processor, that the PSD of the signal transmitted by the remote transmitter is above a predetermined level, and reducing the PSD of the signal transmitted by the remote transmitter by adjusting at least one of a spread spectrum spreading factor, a power level, a modulation factor, and a forward error correction (FEC) rate using a modulator while maintaining a constant spectral allocation and center frequency of the signal.

公开(公告)号：EP2772022A1

公开(公告)日：2014-09-03

申请号：EP13743110.2

申请日：2013-01-31

Applicant: Comtech EF Data Corp.

Inventor： BEELER, Michael ,  BADDICK, John ,  DAVIS, Wallace

IPC: H04L12/26 ,  H04W24/00 ,  G06F17/00

CPC classification number: H04W16/22 ,  H04L41/145 ,  H04W24/02

Abstract: Methods of dynamically modeling performance of a communications network that may include modeling a communications network using a processor by performing a link budget analysis (LBA) for a configuration of the communications network, receiving a plurality of layers of real-time information about the communications network, iteratively performing additional LBAs using one or more of the layers of real-time information from among the plurality of layers of real-time information, multi-dimensionally co-modeling a matrix comprising results of the iteratively performed additional LBAs, and determining one or more final communications network configuration parameters based on the multi- dimensionally co-modeled matrix.

公开(公告)号：EP2764625A2

公开(公告)日：2014-08-13

申请号：EP12838628.1

申请日：2012-10-05

Applicant: Comtech EF Data Corp.

Inventor： COLLISON, Sean, M. ,  BANISTER, Brian, A. ,  OWSLEY, Patrick

IPC: H03M13/45

CPC classification number: H04L1/005 ,  H03M13/13 ,  H03M13/19 ,  H03M13/3776 ,  H03M13/451 ,  H03M13/616 ,  H03M13/6561 ,  H03M13/6577 ,  H03M13/6583

Abstract: A method of searching for candidate codewords for a telecommunications system, the method comprising receiving a sequence of constellation points, producing a received FEC vector comprised of bits from the received constellation points, comparing the received FEC vector with a plurality of candidate codewords within a Dorsch decoding process using an ordered pattern, and terminating the search when a candidate codeword from among the plurality of candidate codewords is found residing within a predetermined range of a specified distance of the received FEC vector.

公开(公告)号：BR112013022654A2

公开(公告)日：2017-10-17

申请号：BR112013022654

申请日：2012-03-10

Applicant: COMTECH EF DATA CORP

Inventor： CRIS MAMARIL ,  FREDERICK MORRIS ,  JEFFREY HARIG ,  MICHAEL BEELER ,  WALLACE DAVIS

IPC: H04B7/185 ,  H04B15/00 ,  H04W52/18

公开(公告)号：EP2673932A4

公开(公告)日：2016-04-06

申请号：EP12744347

申请日：2012-02-06

Applicant: COMTECH EF DATA CORP

Inventor： BEELER MICHAEL ,  MORRIS FREDERICK ,  HARIG JEFFREY ,  MAMARIL CRIS

IPC: H04L27/34 ,  H04B1/707

CPC classification number: H04L27/3488 ,  H04B1/707

Abstract: A communication method for embedding a meta-carrier under an original carrier signal with reduced or minimal original carrier signal degradation, the method comprising transmitting an original carrier signal and transmitting a meta-carrier signal separate from the original carrier signal, wherein the meta-carrier signal contains information about an original carrier signal, is extractable under an interfered condition, and is transmitted such that the meta-carrier signal occupies at least a portion of a bandwidth of the original carrier signal.