公开(公告)号：WO2013003633A1

公开(公告)日：2013-01-03

申请号：PCT/US2012/044715

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.

Abstract translation: 一种在原始突发载波信号中嵌入和发送元数据消息用于消息重新组合的方法，包括使用具有伪随机噪声（PRN）扩展码序列的直接序列扩频（DSSS）扩展码扩展元载波信号 元载波信号包括关于原始脉冲串载波信号的元数据信息的一个或多个位，使用PRN扩展码降低元载波信号的功率谱密度，从而减少对原始信号的干扰，组合 使用调制器的原始突发载波和元载波信号，使得复合突发载波信号导致元载波信号占据原始载波的带宽的至少一部分，并且使用发射机发射复合突发载波 在ap处，期望在预定频带内预期存在一个突发载波信号的电信信道 及时点燃

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：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.