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1. 发明申请

US20090135937A1 Trellis constellation shaping 审中-公开
标题翻译：网格星座塑形
公开(公告)号：US20090135937A1
公开(公告)日：2009-05-28
申请号：US12321912
申请日：2009-01-26
申请人： Igor S. Djokovic , Richard D. Wesel
发明人： Igor S. Djokovic , Richard D. Wesel
IPC分类号： H04L23/02
CPC分类号： H04L27/3411 , H03M13/253 , H03M13/256 , H03M13/2936 , H03M13/41 , H03M13/6533
摘要： A method for trellis constellation shaping is disclosed. In one embodiment, this method comprises receiving two or more input bits and filtering at least one of the two or more input bits to create two or more filtered output bits. The step of filtering at least one input bit introduces at least one extra bit. The method then encodes the input bits which are not filtered to create encoded bits and stores the encoded bits and the filtered bits in a buffer. A processing element may be configured to perform Viterbi type processing on the filtered bits to create processed bits. The method combines at least one of the processed bits with at least one of the buffered bits to create a combined bit set from the buffered bits and then performs mapping on the combined bet set to thereby map the combined bit set into a constellation.
摘要翻译：公开了一种网格星座成形方法。在一个实施例中，该方法包括接收两个或更多个输入比特并且对两个或更多个输入比特中的至少一个进行滤波以创建两个或多个滤波输出比特。对至少一个输入位进行滤波的步骤至少引入一个额外的位。然后，该方法对未被滤波的输入位进行编码以创建编码比特，并将编码比特和滤波比特存储在缓冲器中。处理元件可以被配置为对滤波的比特执行维特比类型处理以创建经处理的比特。该方法将经处理的比特中的至少一个与缓冲比特中的至少一个相结合，以从缓冲的比特中产生组合的比特集合，然后在组合的赌注集上执行映射，从而将组合比特集合映射成星座。

2. 发明申请

US20090238302A1 Method and apparatus for signal coding 审中-公开
标题翻译：信号编码方法和装置
公开(公告)号：US20090238302A1
公开(公告)日：2009-09-24
申请号：US12322617
申请日：2009-02-03
申请人： Igor S. Djokovic , Richard D. Wesel
发明人： Igor S. Djokovic , Richard D. Wesel
IPC分类号： H04L27/00
CPC分类号： H04L27/3433 , H03M13/25 , H03M13/256 , H04L1/0041 , H04L1/006
摘要： A method and apparatus is disclosed for use in a communication system for encoding data to achieve more efficient coding rates and high data transmit rate, or a lower bit error rate. An encoder may receive a portion of the data to be encoded and process the portion of the data to create encoded data. The encoded data and the portion of the data not sent to the encoder are presented to a transform module configured to perform matrix multiplication on the inputs with a transform matrix. The resulting transformed data is mapped, using a mapper, either via an algorithmic approach or a manual mapping approach to generating a constellation mapped output. 2-dimensional encoding may occur.
摘要翻译：公开了一种在用于对数据进行编码以实现更有效的编码率和高数据传输速率或较低的误码率的通信系统中使用的方法和装置。编码器可以接收要编码的数据的一部分并且处理数据的该部分以创建编码数据。编码数据和未发送到编码器的数据的部分被呈现给变换模块，该变换模块被配置为使用变换矩阵在输入上执行矩阵乘法。使用映射器通过算法方法或手动映射方法映射生成的变换数据，以生成星座映射输出。可能发生二维编码。

3. 发明授权

US5216519A Echo protection tone detection and regeneration for digital transmission of facsimile calls 失效
标题翻译：用于传真电话数字传输的回波保护音检测和再生
公开(公告)号：US5216519A
公开(公告)日：1993-06-01
申请号：US947355
申请日：1992-09-18
申请人： Ronald L. Daggett , Richard D. Wesel
发明人： Ronald L. Daggett , Richard D. Wesel
IPC分类号： H04N1/00
CPC分类号： H04N1/001
摘要： A transmission arrangement is disclosed which facilitates compression of modem modulated facsimile signals for transmission on digital facilities. The presence of a facsimile call is detected and facsimile control messages are obtained by demodulating and interpreting the facsimile call control protocol. A controller is responsive to the obtained control messages for controlling a voiceband encoder to encode the control portion of the facsimile call and for controlling a so-called facsimile page demodulator to demodulate any facsimile page portions of the facsimile call to obtain a baseband digital bit stream. The presence of prescribed tone signals, i.e., echo protection tone (EPT) signals, is detected in the facsimile call. EPT control messages representative of the EPT signals are generated. The encoded control portion of the facsimile call and the baseband digital bit stream representative of the demodulated, i.e., compressed, facsimile page portion of the facsimile call are transmitted along with control information (as side information) and the EPT control messages to a receiver. At the receiver, a replica of the original modem modulated facsimile signal is reconstructed in response to the control information and by decoding the control portion of the facsimile call and by remodulating the digital bit stream representative of the facsimile page portion of the facsimile call. If EPT control messages are received, the corresponding echo protection tone signal is regenerated for inclusion in the remodulated facsimile signal.
摘要翻译：公开了一种便于压缩调制传真信号以便在数字设备上传输的传输装置。检测到传真呼叫的存在，并且通过解调和解释传真呼叫控制协议来获得传真控制消息。控制器响应于所获得的控制消息，用于控制语音频带编码器对传真呼叫的控制部分进行编码，并且用于控制所谓的传真机页面解调器以解调传真呼叫的任何传真页面部分，以获得基带数字比特流。在传真呼叫中检测到规定音调信号的存在，即回波保护音（EPT）信号。生成代表EPT信号的EPT控制消息。传真呼叫的编码控制部分和表示传真呼叫的解调的，即压缩的传真页面部分的基带数字比特流与控制信息（作为辅助信息）和EPT控制消息一起被发送到接收机。在接收机处，响应于控制信息重建原始调制解调器调制传真信号的副本，并且通过对传真呼叫的控制部分进行解码以及通过重新调制表示传真呼叫的传真页面部分的数字比特流来重构。如果接收到EPT控制消息，则重新生成对应的回波保护音信号以便包含在重新调制的传真信号中。

4. 发明授权

US07802172B2 Variable-rate low-density parity check codes with constant blocklength 有权
标题翻译：具有恒定块长度的可变速率低密度奇偶校验码
公开(公告)号：US07802172B2
公开(公告)日：2010-09-21
申请号：US11471439
申请日：2006-06-20
申请人： Andres I. Vila Casado , Wen-Yen Weng , Richard D. Wesel , Nicola Moschini , Massimiliano Siti , Stefano Valle , Engling Yeo
发明人： Andres I. Vila Casado , Wen-Yen Weng , Richard D. Wesel , Nicola Moschini , Massimiliano Siti , Stefano Valle , Engling Yeo
IPC分类号： G06F11/00 , H03M13/00
CPC分类号： H03M13/1185
摘要： Low density parity check (LDPC) codes (LDPCCs) have an identical code blocklength and different code rates. At least one of the rows of a higher-rate LDPC matrix is obtained by combining a plurality of rows of a lower-rate LDPC matrix with the identical code blocklength as the higher-rate LDPC matrix.
摘要翻译：低密度奇偶校验（LDPC）码（LDPCC）具有相同的码块长度和不同的码率。通过将具有相同代码块长度的较低速率LDPC矩阵的多行组合为较高速率LDPC矩阵来获得较高速率LDPC矩阵的行中的至少一行。

5. 发明授权

US5280525A Adaptive frequency dependent compensation for telecommunications channels 失效
标题翻译：针对电信渠道的自适应频率相关补偿
公开(公告)号：US5280525A
公开(公告)日：1994-01-18
申请号：US767305
申请日：1991-09-27
申请人： Richard D. Wesel
发明人： Richard D. Wesel
IPC分类号： H03H21/00 , H03H17/00 , H04B3/06 , H04M3/40 , H04M1/00 , H04M9/00
CPC分类号： H04M3/40 , H04B3/06
摘要： The quality of speech being transmitted in a telecommunication channel is enhanced by adaptively compensating for frequency dependent attenuation in the telecommunication channel. The frequency dependent attenuation in the telecommunication channel is dynamically determined and, then, compensated for by adaptively selecting and inserting an appropriate frequency dependent gain function in the telecommunication channel.
摘要翻译：通过自适应地补偿电信信道中的频率相关衰减来增强在电信信道中传输的语音质量。电信信道中的频率相关衰减被动态确定，然后通过在电信信道中自适应地选择和插入适当的频率相关增益函数进行补偿。

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