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1. 发明申请

US20210243064A1 DCM-COFDM Signaling Using Square QAM Symbol Constellations with Lattice-point Labels Having Over Four Bits Apiece 有权
公开(公告)号：US20210243064A1
公开(公告)日：2021-08-05
申请号：US17237045
申请日：2021-04-22
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04L27/26
摘要： Labeling diversity of the superposition coding modulation (SCM) of dual-carrier modulation (DCM) of a coded orthogonal frequency-division multiplexed (COFDM) signal is used to reduce its peak-to-average-power ratio (PAPR). The reduction of data throughput owing to DCM is compensated for by squaring the number of lattice points in SCM mappings of the quadrature amplitude modulation (QAM) of the carriers of the COFDM signal. The labeling diversity can be such as to minimize PAPR or such as to reduce PAPR less, but improve signal-to-noise (SNR) for reception of the COFDM signal transmitted via an additive-white-Gaussian-noise (AWGN) channel.

2. 发明申请

US20180034677A1 Double-sideband COFDM signal receivers that demodulate unfolded frequency spectrum 审中-公开
公开(公告)号：US20180034677A1
公开(公告)日：2018-02-01
申请号：US15641014
申请日：2017-07-03
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04L27/26 , H04L25/03 , H04L1/00 , H04L27/00 , H04B7/12 , H04L27/38
CPC分类号： H04L27/2698 , H04B7/0885 , H04B7/12 , H04L1/005 , H04L1/0054 , H04L1/0058 , H04L1/0071 , H04L25/03159 , H04L27/0002 , H04L27/2649 , H04L27/38
摘要： Prior-art receivers for double-sideband coded orthogonal frequency-division modulation (COFDM) signal, such as receivers for digital television (DTV) broadcasting, have folded the frequency spectrum in half by synchrodyne to baseband before discrete Fourier transform (DFT) and de-mapping quadrature amplitude-modulation (QAM) of COFDM signal subcarriers, thus to improve signal-to-noise ratio by 6 dB. Single-sideband or independent-sideband COFDM receivers that perform DFT and demapping of QAM of COFDM signal subcarriers in an unfolded frequency spectrum can improve signal-to-noise ratio by 8.5 dB by maximal-ratio combining bits of demapping results. Such improvement is achieved even when such a receiver is arranged for receiving a DSB-COFDM signal, in which double-sideband signal the frequency spectra of the lower and upper sidebands mirror each other. Reception range is increased by about a third over that of receivers which fold the frequency in half during synchrodyne to baseband. Such increase in reception range is particularly important for DTV receivers using indoor antennas.

3. 发明授权

US08781010B2 Utilization of Reed-Solomon coding in mobile/hand-held digital television receivers 失效
标题翻译： Reed-Solomon编码在移动/手持数字电视接收机中的应用
公开(公告)号：US08781010B2
公开(公告)日：2014-07-15
申请号：US13065245
申请日：2011-03-17
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04L5/12 , H04L27/06
CPC分类号： H04L1/0065 , H03M13/09 , H03M13/1515 , H03M13/155 , H03M13/27 , H03M13/2732 , H03M13/2927 , H03M13/2948 , H03M13/2954 , H03M13/2966 , H03M13/2972 , H03M13/37 , H03M13/3746 , H03M13/618 , H04L1/005 , H04L1/0057
摘要： Receivers for recovering ancillary data from parallel concatenated convolutional coding. (PCCC) imbedded in digital television (DTV) signals can utilize the non-systematic (207, 187) Reed-Solomon (RS) codewords included in the DTV signals to facilitate DTV receivers already in the field to continue being able to receive main-service transmissions. Such a receiver attempts to decode each non-systematic (207, 187) RS codeword in a time slot selected for reception. If such RS decoding is successful, indication of such success is used to verify the correctness of bits of the ancillary data or correct them when turbo decoding the PCCC encoding ancillary data in the time slot selected for reception. The updating of ancillary data bits during cycles of turbo decoding updates the non-systematic (207, 187) RS codewords in the time slot selected for reception, increasing the likelihood of RS decoding of those RS codewords being successful during subsequent cycles of turbo decoding. If all the non-systematic (207, 187) RS codewords in the time slot selected for reception are successfully decoded before reaching a prescribed maximum number of cycles of turbo decoding, turbo decoding can be discontinued early to conserve operating power.
摘要翻译：用于从并行级联卷积编码恢复辅助数据的接收器。嵌入数字电视（DTV）信号的PCCC（PCCC）可以利用包括在DTV信号中的非系统（207,187）里德 - 所罗门（RS）码字，以便于已经在现场的DTV接收机继续能够接收主 - 服务传输。这样的接收机尝试在选择用于接收的时隙中解码每个非系统（207,187）RS码字。如果这样的RS解码成功，则在选择用于接收的时隙中对PCCC编码辅助数据进行turbo解码时，使用这种成功的指示来验证辅助数据的比特的正确性或校正它们。在turbo解码周期期间，辅助数据比特的更新在选择用于接收的时隙中更新非系统（207,187）RS码字，增加了这些RS码字的RS解码在turbo解码的后续周期期间成功的可能性。如果在达到规定的最大数量的turbo解码之前成功解码了用于接收的时隙中的所有非系统（207,187）RS码字，则可以尽早中止turbo解码以节省操作功率。

4. 发明申请

US20140161209A1 COFDM broadcasting with single-time retransmission of COFDM symbols 审中-公开
标题翻译： COFDM广播，具有COFDM符号的单次重传
公开(公告)号：US20140161209A1
公开(公告)日：2014-06-12
申请号：US14183264
申请日：2014-02-18
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04L1/02 , H04L27/01 , H04B7/02
CPC分类号： H04L1/02 , H04L1/0041 , H04L1/0045 , H04L1/0065 , H04L5/0016 , H04L25/067 , H04L27/01 , H04L27/2627 , H04L27/2649 , H04L27/36 , H04L27/38
摘要： Transmitter apparatus to broadcast coded orthogonal frequency-division multiplexed (COFDM) radio-frequency carriers conveying digital television (DTV) signals encoded using Bose-Chaudhuri-Hocquenghem (BCH) coding concatenated with subsequent low-density parity-check coding (LPDC) transmits the same coded DTV signals twice some time apart. The coded DTV signals are mapped to quadrature amplitude modulation (QAM) of the COFDM carriers. Preferably, the circular Fourier transforms of COFDM symbols in the earlier transmissions are rotated one half revolution respective to the circular Fourier transforms of corresponding COFDM symbols in the later transmissions. Receiver apparatus combines the earlier and later transmissions of twice-transmitted COFDM signals as part of iterative procedures for de-mapping QAM and decoding the concatenated BCH-LDPC coding of the DTV signals.
摘要翻译：传送使用与随后的低密度奇偶校验编码（LPDC）并置的Bose-Chaudhuri-Hocquenghem（BCH）编码编码的数字电视（DTV）信号的编码的正交频分复用（COFDM）射频载波的发射机装置，相同的编码DTV信号相隔两次。编码的DTV信号被映射到COFDM载波的正交幅度调制（QAM）。优选地，先前传输中的COFDM符号的循环傅里叶变换相应于稍后传输中相应的COFDM符号的循环傅里叶变换旋转了一半。接收机装置组合了两倍传输的COFDM信号的较早和较晚的传输，作为用于解映射QAM和解码DTV信号的级联的BCH-LDPC编码的迭代过程的一部分。

5. 发明授权

US08649429B2 Systems for reducing adverse effects of deep fades in DTV signals designed for mobile reception 失效
标题翻译：减少设计用于移动接收的DTV信号深度衰落的不利影响的系统
公开(公告)号：US08649429B2
公开(公告)日：2014-02-11
申请号：US13609054
申请日：2012-09-10
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04N7/12
CPC分类号： H04L65/4076 , H03M13/2957 , H04L65/607 , H04N21/2383
摘要： Digital television broadcasting signals employ parallel concatenated convolutional coding, commonly called “turbo coding”, to improve reception by receivers in motor vehicles. Turbo coded Reed-Solomon codewords are transversally disposed in the payload fields of encapsulating MPEG-2-compliant packets to improve the capability of the Reed-Solomon coding to overcome deep fades. Turbo codewords are transmitted more than once in so-called “staggercasting”. Reception of DTV signals is improved by combining soft decisions concerning repeated transmissions of turbo codewords before turbo decoding. Only the data components of turbo codewords are transmitted twice in “punctured” staggercasting of turbo codewords, with parity components being transmitted only once, so code rate is reduced by a smaller factor than two.
摘要翻译：数字电视广播信号采用平行级联卷积编码，通常称为“turbo编码”，以改善机动车辆中接收机的接收。 Turbo编码的Reed-Solomon码字被横向地布置在封装MPEG-2兼容分组的有效载荷字段中，以提高Reed-Solomon编码克服深度衰落的能力。 Turbo码字在所谓的“交错”中被多次发送。通过组合关于涡轮解码之前的turbo码字的重复发送的软判决来改善DTV信号的接收。只有Turbo码字的数据分量在turbo码字的“穿孔”交错广播中被发送两次，其中奇偶校验分量仅被发送一次，因此码率被减少比两个更小的因子。

6. 发明授权

US08418022B2 Utilization of non-systematic (207, 187) Reed-Solomon coding in mobile/hand-held digital television receivers 失效
标题翻译：在移动/手持数字电视接收机中利用非系统（207,187）里德 - 所罗门编码
公开(公告)号：US08418022B2
公开(公告)日：2013-04-09
申请号：US12931688
申请日：2011-02-08
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H03M13/00
CPC分类号： H03M13/2966 , H03M13/1515 , H03M13/2972 , H03M13/6538
摘要： Non-systematic (207, 187) Reed-Solomon codewords contain valuable information concerning the correctness of the outer convolutional coding of the serial concatenated convolutional coding (SCCC) used for transmitting digital television (DTV) data to mobile/handheld (M/H) receivers. M/H receivers are described that, before and during turbo decoding of the SCCC, decode (207, 187) Reed-Solomon (RS) coding of transport-stream packets encapsulating M/H DTV data. The results of the decoding the RS coding locate bytes in the outer convolutional coding of the SCCC very unlikely to be in error. The confidence levels of bits in those bytes are adjusted accordingly, so turbo decoding of the SCCC converges faster. In M/H receivers of preferred design, the results of decoding RS coded transport-stream packets are used to signal when such convergence is reached, to stop the iterative SCCC decoding procedures before a prescribed maximum number of iterations, thus to conserve operating power.
摘要翻译：非系统（207,187）里德 - 所罗门码字包含有关用于将数字电视（DTV）数据传输到移动/手持（M / H）的串行级联卷积编码（SCCC）的外部卷积编码的正确性的有价值的信息，接收器。描述了在SCCC的turbo解码之前和期间对M / H接收机进行解码（207,187）封装M / H DTV数据的传输流分组的Reed-Solomon（RS）编码。在SCCC的外部卷积编码中解码RS编码定位字节的结果非常不可能出错。相应调整这些字节中位的置信水平，因此SCCC的turbo解码速度更快。在优选设计的M / H接收机中，解码RS编码传输流分组的结果用于在达到这种收敛时发出信号，以在规定的最大迭代次数之前停止迭代SCCC解码过程，从而节省操作功率。

7. 发明授权

US08416888B2 Coding and decoding of 8-VSB digital television signals for mobile/handheld receivers 失效
标题翻译：用于移动/手持式接收机的8-VSB数字电视信号的编码和解码
公开(公告)号：US08416888B2
公开(公告)日：2013-04-09
申请号：US12928187
申请日：2010-12-06
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04L27/06
CPC分类号： H04N21/4382 , H04L25/03057 , H04L25/03203 , H04L25/03318 , H04L27/02 , H04N21/2383
摘要： Modified systems for broadcasting M/H data employ two-dimensional coding of RS Frames that combines transverse RS coding with subsequent byte-error-locating block coding that generates codewords of a prescribed standard length. This prescribed standard length is chosen such that an integral number of codewords of the byte-error-locating block code fits exactly, or substantially so, into the portion of each RS Frame that is encoded in CCC for inclusion within an M/H Group. The byte-error-locating block coding is CRC coding by way of one specific example or is Reed-Solomon (LRS) forward-error-correction (FEC) coding by way of another specific example. M/H receivers are described in which codewords of this byte-error-locating block coding are decoded and used to influence the soft decisions concerning data bits. Then, these soft decisions are processed and used for locating byte errors for the transverse Reed-Solomon (TRS) codes on an individual basis.
摘要翻译：用于广播M / H数据的修改系统采用RS帧的二维编码，其将横向RS编码与随后的产生规定标准长度的码字的字节错误定位块编码相结合。选择该规定的标准长度，使得字节错误定位块码的整数个码字精确地或基本上适合于在CCC中编码以包括在M / H组内的每个RS帧的部分。字节错误定位块编码是通过一个具体示例的CRC编码，或者通过另一具体示例的里德 - 所罗门（LRS）前向纠错（FEC）编码。描述了这种字节错误定位块编码的码字被解码并用于影响关于数据比特的软判决的M / H接收机。然后，这些软判决被处理并用于单独定位横向里德 - 所罗门（TRS）码的字节错误。

8. 发明授权

US08284832B2 System for digital television broadcasting using modified 2/3 trellis coding 有权
标题翻译：使用修改的2/3网格编码的数字电视广播系统
公开(公告)号：US08284832B2
公开(公告)日：2012-10-09
申请号：US12492762
申请日：2009-06-26
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04N11/04 , H04N11/02 , H04N7/12
CPC分类号： H04N5/4401 , H03M13/256 , H03M13/258 , H03M13/2972 , H03M13/6538 , H04N21/4382
摘要： The outer convolutional coding of the signals used to transmit mobile-handheld (M/H) service data within digital-television (DTV) signals is subjected to anti-Gray coding, either before or after its interleaving, but before its inner convolutional coding. In a receiver for such M/H-service data, portions of the trellis decoded DTV signal containing soft decisions concerning symbol-interleaved convolutionally coded M/H-service data are recoded for a Gray-code mapping of symbols to modulation levels. This is done either before or after symbol de-interleaving, but before decoding the outer convolutional coding. Soft decisions concerning extrinsic information to be fed back to the ⅔ trellis decoder to close a turbo decoding loop are derived from soft decisions as to the M/H-service data, which derivation includes re-coding for a binary-code mapping of symbols to modulation levels. Each re-coding procedure can be performed using ROM, but preferably is performed using simple digital logic.
摘要翻译：在数字电视（DTV）信号中用于发送移动手持（M / H）业务数据的信号的外部卷积编码在其交织之前或之后，但在其内部卷积编码之前进行抗格雷编码。在用于这样的M / H服务数据的接收机中，包含有关符号交织的卷积编码的M / H服务数据的软判决的网格解码的DTV信号的部分被重新编码用于符号的格雷码映射到调制级。这是在符号解交织之前或之后完成的，但在解码外部卷积编码之前完成。关于要反馈到⅔格解码器以关闭turbo解码循环的外部信息的软判决来自关于M / H服务数据的软判决，其导出包括对符号的二进制码映射进行重新编码调制级别。可以使用ROM来执行每个重新编码过程，但是优选地使用简单的数字逻辑来执行。

9. 发明申请

US20120204080A1 Utilization of non-systematic (207, 187) Reed-Solomon coding in mobile/hand-held digital television receivers 失效
标题翻译：在移动/手持数字电视接收机中利用非系统（207,187）里德 - 所罗门编码
公开(公告)号：US20120204080A1
公开(公告)日：2012-08-09
申请号：US12931688
申请日：2011-02-08
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H03M13/15 , G06F11/10
CPC分类号： H03M13/2966 , H03M13/1515 , H03M13/2972 , H03M13/6538
摘要： Non-systematic (207, 187) Reed-Solomon codewords contain valuable information concerning the correctness of the outer convolutional coding of the serial concatenated convolutional coding, (SCCC) used for transmitting M/H-service data. An M/H receiver can decode the non-systematic (207, 187) Reed-Solomon coded MHE packets before and during turbo decoding of the SCCC. The decoding results are used to influence the soft decisions concerning bits of the SCCC that arise during SCCC decoding procedures. The decoding results can sometimes correct errors in the outer convolutional coding of the SCCC. The decoding results can be employed to stop the iterative SCCC decoding procedures sometimes before reaching a prescribed maximum number of iterations.
摘要翻译：非系统（207,187）里德 - 所罗门码字包含有关用于发送M / H服务数据的串行级联卷积编码（SCCC）的外部卷积编码的正确性的有价值的信息。在SCCC的turbo解码之前和期间，M / H接收机可以对非系统（207,187）Reed-Solomon编码的MHE分组进行解码。解码结果用于影响关于在SCCC解码过程中出现的SCCC的比特的软判决。解码结果有时可以校正SCCC的外部卷积编码中的错误。解码结果可以用于在达到规定的最大迭代次数之前停止迭代SCCC解码过程。

10. 发明授权

US08111769B2 Transmissions with reduced code rate in 8VSB digital television 有权
标题翻译： 8VSB数字电视的传输速率降低
公开(公告)号：US08111769B2
公开(公告)日：2012-02-07
申请号：US12691858
申请日：2010-01-22
申请人： Allen LeRoy Limberg
发明人： Allen LeRoy Limberg
IPC分类号： H04L23/02 , H04L5/12
CPC分类号： H03M13/256 , H03M13/253 , H03M13/2732 , H03M13/6538 , H04L1/0054 , H04L1/006 , H04L1/0071
摘要： Procedures performed prior to convolutional interleaving of 8VSB digital television signals restrict the alphabet of symbols in novel methods of generating trellis-coded digital television signals that include more robust symbol coding using a restricted alphabet of symbols selected from a full 8VSB symbol alphabet consisting of −7, −5, −3, −1, +1, +3, +5 and +7 normalized modulation levels superposed on a background modulation level. Certain of these novel procedures generate pseudo-2VSB or P-2VSB robust symbol coding with a restricted alphabet of symbols consisting of −7, −5, +5 and +7 normalized modulation levels superposed on a background modulation level. Others of these novel procedures generate prescribed-coset-pattern-modulation or PCPM robust symbol coding intermixing two restricted alphabets of symbols according to a prescribed pattern. One of the two restricted alphabets of symbols used in PCPM consists of −3, −1, +5 and +7 normalized modulation levels superposed on a background modulation level. The other of the two restricted alphabets of symbols used in PCPM consists of −7, −5, +1 and +3 normalized modulation levels superposed on a background modulation level.
摘要翻译：在8VSB数字电视信号的卷积交织之前执行的程序在新颖的产生网格编码的数字电视信号的方法中限制符号字母，其包括使用从包含-7的全8VSB符号字母组成的限制字符串的符号编码，-5，-3，-1，+ 1，+ 3，+ 5和+ 7标准化调制电平。这些新颖程序中的某些产生伪叠2VSB或P-2VSB鲁棒符号编码，其具有由背景调制级别叠加的-7，-5，+ 5和+7标准化调制级别组成的限制符号字母表。这些新颖程序中的其他方法根据规定的模式产生规定的陪集模式调制或PCPM鲁棒符号编码，以混合两个受限的符号字母。在PCPM中使用的符号的两个限制字母表之一包括叠加在背景调制级上的-3，-1，+ 5和+7标准化调制级。 PCPM中使用的两个限制字母表中的另一个包括叠加在背景调制级上的-7，-5，+1和+3标准化调制电平。

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