公开(公告)号：EP2715967A2

公开(公告)日：2014-04-09

申请号：EP12799931.6

申请日：2012-05-22

Applicant: Comtech EF Data Corp.

Inventor： AKHAVAN-TOYSERKANI, Kasra ,  RIPPLE, Andrew ,  BEELER, Michael ,  MAMARIL, Cris

IPC: H04L9/00 ,  H04L27/00

CPC classification number: H04K1/02

Abstract: A method for encrypting an information carrier comprising generating a sequence of data using a sequence generator, modulating, using a first modulator an output from the sequence generator such that an interference signal results, encoding the interference generator's synchronization information using an encoder, modulating, using a second modulator, the encoded synchronization information such that a synchronization carrier signal results, spreading the synchronization carrier signal using a spreader such that a spread sub-carrier synchronization signal results, and combining the modulated information carrier signal, interference signal, and spread sub-carrier synchronization signal using a signal combiner such that a composite signal results, the interference signal having one or more signal characteristics that results in obfuscation of the information carrier signal when the information carrier signal and interference signal are combined.

公开(公告)号：EP2727306A1

公开(公告)日：2014-05-07

申请号：EP12803741.3

申请日：2012-06-28

Applicant: Comtech EF Data Corp.

Inventor： BEELER, Michael ,  MORRIS, Frederick ,  MAMARIL, Cris ,  HARIG, Jeffrey ,  CANNON, Richard, Hollingsworth ,  BANISTER, Brian, A.

IPC: H04L29/00 ,  H04B1/707

CPC classification number: H04B1/707 ,  H04B1/7097 ,  H04L27/3488

Abstract: A method of embedding and transmitting a meta-data message in an original burst carrier signal for message reassembly comprising spreading a meta-carrier signal using a Direct Sequence Spread Spectrum (DSSS) spreading code having a Pseudo-Random Noise (PRN) spreading code sequence, the meta-carrier signal comprising one or more bits of meta-data information about the original burst carrier signal, lowering a power spectral density of the meta- carrier signal using the PRN spreading code such that interference with the original signal is reduced, combining the original burst carrier and the meta-carrier signals using a modulator such that a composite burst carrier signal results wherein the meta-carrier signal occupies at least a portion of a bandwidth of the original carrier, and transmitting the composite burst carrier using a transmitter over a telecommunications channel in which only one burst carrier signal is expected to be present within a predetermined frequency bandwidth at a point in time.

公开(公告)号：EP2684301A2

公开(公告)日：2014-01-15

申请号：EP12754961.6

申请日：2012-03-10

Applicant: Comtech EF Data Corp.

Inventor： BEELER, Michael ,  HARIG, Jeffrey ,  DAVIS, Wallace ,  MORRIS, Frederick ,  MAMARIL, Cris

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

CPC classification number: H04B7/18513 ,  H04B7/18515 ,  H04B7/18528 ,  H04B7/18543

Abstract: A method for remotely and dynamically controlling adjacent satellite interference comprising monitoring one or more off-axis signals emitted by one or more remote transmitters; determining whether one or more of the off-axis signals is creating adjacent satellite interference (ASI), off axis emissions and inband interference that is higher than a predetermined level of acceptable interference, and transmitting a control signal to at least one of the one or more remote transmitters in response to the determination that the one or more off-axis signals is creating interference that is higher than the predetermined level of acceptable interference, the control signal initiating an adjustment to one or more transmission parameters of the one or more remote transmitters such that interference resulting from the one or more off-axis signals emitted by the one or more remote transmitters is reduced or eliminated.

公开(公告)号：EP2673932A2

公开(公告)日：2013-12-18

申请号：EP12744347.1

申请日：2012-02-06

Applicant: Comtech EF Data Corp.

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

IPC: H04L27/34 ,  H04B1/69

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.