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公开(公告)号：US20110041044A1
公开(公告)日：2011-02-17
申请号：US12937366
申请日：2009-07-06
CPC分类号： H03M13/1154 , H03M13/116 , H03M13/13 , H03M13/235 , H03M13/616 , H03M13/617 , H03M13/6306 , H03M13/635 , H03M13/6356 , H03M13/6516 , H03M13/6527 , H04B3/542 , H04L1/0041 , H04L1/0058
摘要： An encoder and decoder using LDPC-CC (Low Density Parity Check-Convolutional Codes) is disclosed. The encoder exhibits encoding rates realized with a small circuit-scale and a high data reception quality. In the encoder (200), an encoding rate setting unit (250) sets an encoding rate (s−1)/s (s=z), and an information creating unit (210) sets information including from information Xs,i to information Xz−1,i to zero. A first information computing unit (220-1) receives information X1,i at time point i to compute the X1(D) term of formula (1). A second information computing unit (220-2) receives information X2,i at time point i to compute the X2(D) term of formula (1). A third information computing unit (220-3) receives information X3,i at time point i to compute the X3(D) term of formula (1). A parity computing unit (230) receives parity Pi−1 at time point i−1 to compute the P(D) of formula (1). The exclusive OR of the results of the computation is obtained as parity Pi at time i. Ax.
摘要翻译： 公开了一种使用LDPC-CC（低密度奇偶校验卷积码）的编码器和解码器。 编码器表现出具有小电路规模和高数据接收质量实现的编码速率。 在编码器（200）中，编码率设定部（250）设定编码率（s-1）/ s（s = z），信息生成部210将信息Xs，i， Xz-1，我为零。 第一信息计算单元（220-1）在时间点i接收信息X1，i，以计算公式（1）的X1（D）项。 第二信息计算单元（220-2）在时间点i接收信息X2，i，以计算公式（1）的X2（D）项。 第三信息计算单元（220-3）在时间点i接收信息X3，i，以计算公式（1）的X3（D）项。 奇偶校验计算单元（230）在时间点i-1处接收奇偶校验Pi-1以计算公式（1）的P（D）。 计算结果的异或获得为时间i的奇偶校验Pi。 斧头。
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公开(公告)号：US20100205511A1
公开(公告)日：2010-08-12
申请号：US12679740
申请日：2008-09-26
CPC分类号： H03M13/1154 , H03M13/1102 , H03M13/118 , H03M13/23 , H03M13/235 , H03M13/6362 , H04L1/0041
摘要： A low-density parity check convolution code (LDPC-CC) is made, and a signal sequence is sent after subjected to an error-correcting encodement using the low-density parity check convolution code. In this case, a low-density parity check code of a time-variant period (3g) is created by linear operations of first to 3g-th (letter g designates a positive integer) parity check polynomials and input data.
摘要翻译： 进行低密度奇偶校验卷积码（LDPC-CC），并且在使用低密度奇偶校验卷积码进行纠错编码之后发送信号序列。 在这种情况下，通过第一至第3g（字母g表示正整数）奇偶校验多项式和输入数据的线性运算，创建时变周期（3g）的低密度奇偶校验码。
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公开(公告)号：US20100104044A1
公开(公告)日：2010-04-29
申请号：US12532165
申请日：2008-03-21
CPC分类号： H04L27/2628 , H04L27/2614
摘要： Provided is a radio transmission device (100) which can flexibly cope with a request for assuring an error ratio feature during a high transmission rate, a request for increasing a cell coverage, or the like. The radio transmission device (100) includes a first subcarrier modulation unit (104) which forms a first subcarrier modulation signal obtained by converting a plurality of modulation signals into a frequency region; a second subcarrier modulation unit (105) which forms a second subcarrier modulation signal obtained by parallel conversion of a plurality of signals; an IFFT unit (111) which forms an OFDM signal by performing inverse Fourier transform on the first and the second subcarrier modulation signal; and a subcarrier mapping unit (110) which controls allocation of the first and the second subcarrier modulation signals.
摘要翻译： 提供一种无线传输装置（100），其可以灵活地应对在高传输速率期间确保错误率特征的请求，增加小区覆盖的请求等。 无线发送装置（100）具有形成通过将多个调制信号变换为频率区域而获得的第一副载波调制信号的第一副载波调制部（104） 形成通过并行转换多个信号而获得的第二子载波调制信号的第二副载波调制单元（105） IFFT单元（111），通过对第一和第二副载波调制信号进行逆傅立叶变换来形成OFDM信号; 以及控制第一和第二副载波调制信号的分配的副载波映射部（110）。
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公开(公告)号：US08397145B2
公开(公告)日：2013-03-12
申请号：US12937366
申请日：2009-07-06
IPC分类号： H03M13/03
CPC分类号： H03M13/1154 , H03M13/116 , H03M13/13 , H03M13/235 , H03M13/616 , H03M13/617 , H03M13/6306 , H03M13/635 , H03M13/6356 , H03M13/6516 , H03M13/6527 , H04B3/542 , H04L1/0041 , H04L1/0058
摘要： An encoder and decoder using LDPC-CC (Low Density Parity Check-Convolutional Codes) is disclosed. The encoder exhibits encoding rates realized with a small circuit-scale and a high data reception quality. In the encoder (200), an encoding rate setting unit (250) sets an encoding rate (s−1)/s (s=z), and an information creating unit (210) sets information including from information Xs,i to information Xz−1,i to zero. A first information computing unit (220-1) receives information X1,i at time point i to compute the X1(D) term of formula (1). A second information computing unit (220-2) receives information X2,i at time point i to compute the X2(D) term of formula (1). A third information computing unit (220-3) receives information X3,i at time point i to compute the X3(D) term of formula (1). A parity computing unit (230) receives parity Pi−1 at time point i−1 to compute the P(D) of formula (1). The exclusive OR of the results of the computation is obtained as parity Pi at time i. Ax.
摘要翻译： 公开了一种使用LDPC-CC（低密度奇偶校验卷积码）的编码器和解码器。 编码器表现出具有小电路规模和高数据接收质量实现的编码速率。 在编码器（200）中，编码率设定部（250）设定编码率（s-1）/ s（s = z），信息生成部210将信息Xs，i， Xz-1，我为零。 第一信息计算单元（220-1）在时间点i接收信息X1，i，以计算公式（1）的X1（D）项。 第二信息计算单元（220-2）在时间点i接收信息X2，i，以计算公式（1）的X2（D）项。 第三信息计算单元（220-3）在时间点i接收信息X3，i，以计算公式（1）的X3（D）项。 奇偶校验计算单元（230）在时间点i-1处接收奇偶校验Pi-1以计算公式（1）的P（D）。 计算结果的异或获得为时间i的奇偶校验Pi。 斧头。
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5.发明授权Low-density parity-check convolutional code (LDPC-CC) encoding method, encoder and decoder 有权低密度奇偶校验卷积码（LDPC-CC）编码方法，编码器和解码器公开(公告)号：US08745471B2
公开(公告)日：2014-06-03
申请号：US12679740
申请日：2008-09-26
IPC分类号： H03M13/15
CPC分类号： H03M13/1154 , H03M13/1102 , H03M13/118 , H03M13/23 , H03M13/235 , H03M13/6362 , H04L1/0041
摘要： An encoding method and an encoder for creating a low-density parity check convolution code (LDDC-CC), sending a signal sequence after subjecting the code to an error-correction using the low-density parity check convolution code, and creating a low-density parity check code of a time-variant period (3g) by linear operations of first to 3g-th (letter g designates a positive integer) parity check polynomials and input data.
摘要翻译： 一种用于创建低密度奇偶校验卷积码（LDPC-CC）的编码方法和编码器，在使用低密度奇偶校验卷积码对码进行纠错之后发送信号序列， 奇偶校验多项式和输入数据，通过第一至第3g（字母g表示正整数）的线性运算来确定时变周期（3g）的密度奇偶校验码。
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公开(公告)号：US08265182B2
公开(公告)日：2012-09-11
申请号：US12532165
申请日：2008-03-21
CPC分类号： H04L27/2628 , H04L27/2614
摘要： Provided is a radio transmission device (100) which can flexibly cope with a request for assuring an error ratio feature during a high transmission rate, a request for increasing a cell coverage, or the like. The radio transmission device (100) includes a first subcarrier modulation unit (104) which forms a first subcarrier modulation signal obtained by converting a plurality of modulation signals into a frequency region; a second subcarrier modulation unit (105) which forms a second subcarrier modulation signal obtained by parallel conversion of a plurality of signals; an IFFT unit (111) which forms an OFDM signal by performing inverse Fourier transform on the first and the second subcarrier modulation signal; and a subcarrier mapping unit (110) which controls allocation of the first and the second subcarrier modulation signals.
摘要翻译： 提供一种无线传输装置（100），其可以灵活地应对在高传输速率期间确保错误率特征的请求，增加小区覆盖的请求等。 无线发送装置（100）具有形成通过将多个调制信号变换为频率区域而获得的第一副载波调制信号的第一副载波调制部（104） 形成通过并行转换多个信号而获得的第二子载波调制信号的第二副载波调制单元（105） IFFT单元（111），通过对第一和第二副载波调制信号进行逆傅立叶变换来形成OFDM信号; 以及控制第一和第二副载波调制信号的分配的副载波映射部（110）。
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公开(公告)号：US08620221B2
公开(公告)日：2013-12-31
申请号：US12866014
申请日：2009-02-05
申请人： Takaaki Kishigami , Shozo Okasaka
发明人： Takaaki Kishigami , Shozo Okasaka
IPC分类号： H04B1/00
CPC分类号： H04B7/0452 , H04B7/026 , H04B7/0434 , H04B7/0697 , H04L25/0228 , H04L25/03343 , H04L2025/03426 , H04L2025/03783 , H04L2025/03802 , H04W72/005
摘要： A base station device (10) communicates between a first terminal device and a second terminal device over the same channel by spatial multiplexing. The base station device (10) comprises an interference cancellation coefficient extractor (30) that extracts an interference cancellation coefficient from a signal received from the first terminal device to cancel interference on a propagation channel with the first terminal device in advance, and transmits a pilot signal that contains information related to the interference cancellation coefficient to the second terminal device. In addition, the base station device (10) also comprises an interference canceller (16) that uses the interference cancellation coefficient to cancel an interference component from transmission data to be transmitted over the same channel, and transmits the transmission data from which the interference component has been canceled by the interference canceller (16) to the first terminal device and the second terminal device over the same channel. A wireless communication system is provided which, in a multi-user MIMO, suppresses superimposed interference components resulting from channel fluctuations and channel estimation errors when interference cancellation is performed in advance in a base station unit on a modulated signal to be transmitted.
摘要翻译： 基站装置（10）通过空间复用在同一信道上在第一终端装置和第二终端装置之间进行通信。 基站装置（10）包括干扰消除系数提取器（30），其从预先从第一终端装置接收到的信号中提取干扰消除系数，以预先消除与第一终端装置的传播信道的干扰，并发送导频 信号，其包含与第二终端装置的干扰消除系数有关的信息。 此外，基站装置（10）还包括使用干扰消除系数从通过同一信道发送的发送数据消除干扰成分的干扰消除器（16），并且发送干扰消除器 被干扰消除器（16）已经通过同一信道被取消到第一终端设备和第二终端设备。 提供了一种无线通信系统，其在多用户MIMO中抑制由信道波动和信道估计误差引起的叠加干扰成分，当干扰消除在基站单元中预先在要发送的调制信号上执行时。
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公开(公告)号：US20100323625A1
公开(公告)日：2010-12-23
申请号：US12866014
申请日：2009-02-05
申请人： Takaaki Kishigami , Shozo Okasaka
发明人： Takaaki Kishigami , Shozo Okasaka
IPC分类号： H04B1/10
CPC分类号： H04B7/0452 , H04B7/026 , H04B7/0434 , H04B7/0697 , H04L25/0228 , H04L25/03343 , H04L2025/03426 , H04L2025/03783 , H04L2025/03802 , H04W72/005
摘要： A base station device (10) communicates between a first terminal device and a second terminal device over the same channel by spatial multiplexing. The base station device (10) comprises an interference cancellation coefficient extractor (30) that extracts an interference cancellation coefficient from a signal received from the first terminal device to cancel interference on a propagation channel with the first terminal device in advance, and transmits a pilot signal that contains information related to the interference cancellation coefficient to the second terminal device. In addition, the base station device (10) also comprises an interference canceller (16) that uses the interference cancellation coefficient to cancel an interference component from transmission data to be transmitted over the same channel, and transmits the transmission data from which the interference component has been canceled by the interference canceller (16) to the first terminal device and the second terminal device over the same channel. A wireless communication system is provided which, in a multi-user MIMO, suppresses superimposed interference components resulting from channel fluctuations and channel estimation errors when interference cancellation is performed in advance in a base station unit on a modulated signal to be transmitted.
摘要翻译： 基站装置（10）通过空间复用在同一信道上在第一终端装置和第二终端装置之间进行通信。 基站装置（10）包括干扰消除系数提取器（30），其从预先从第一终端装置接收到的信号中提取干扰消除系数，以预先消除与第一终端装置的传播信道的干扰，并发送导频 信号，其包含与第二终端装置的干扰消除系数有关的信息。 此外，基站装置（10）还包括使用干扰消除系数从通过同一信道发送的发送数据消除干扰成分的干扰消除器（16），并且发送干扰消除器 被干扰消除器（16）已经通过同一信道被取消到第一终端设备和第二终端设备。 提供了一种无线通信系统，其在多用户MIMO中抑制由信道波动和信道估计误差引起的叠加干扰成分，当干扰消除在基站单元中预先在要发送的调制信号上执行时。
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公开(公告)号：US08654871B2
公开(公告)日：2014-02-18
申请号：US12682231
申请日：2008-10-10
申请人： Takaaki Kishigami , Shozo Okasaka
发明人： Takaaki Kishigami , Shozo Okasaka
IPC分类号： H04K1/10
CPC分类号： H04L27/3488 , H04L5/0039 , H04L5/0041 , H04L27/2604 , H04L27/2627 , H04L27/2649 , H04W52/42 , H04W88/08
摘要： A multicarrier transmitter and a multicarrier receiver improve the reception characteristic of hierarchical modulation multiplex communication. A base station transmits a multicarrier superposition signal of a modulated signal addressed to a far user (a far-user addressed signal) and a modulated signal addressed to a near user (a near-user addressed signal) and modulated with a modulation multivalued number different from that of the far-user addressed signal. The base station separates the far-user addressed signal into frequency range signals, serial/parallel-transforms the near-user addressed signal to generate N1 parallel signals, and combines the generated N1 frequency components and the N1 parallel signals. Since the far-user receiver changes the near-user addressed signal into white noise by inverse discrete Fourier transform, the far-user receiver can demodulate the far-user addressed signal with high accuracy. The near-user receiver can acquire the signal addressed thereto with high accuracy by subtracting the far-user addressed signal from the received signal.
摘要翻译： 多载波发射机和多载波接收机改善分层调制多路复用通信的接收特性。 基站发送寻址到远用户（远用户寻址信号）的调制信号和寻址到近用户（近用户寻址信号）的调制信号的多载波叠加信号，并用调制多值数进行调制 来自远端用户寻址信号。 基站将远用户寻址信号分离为频率范围信号，串行/并行转换近用户寻址信号以产生N1并行信号，并组合产生的N1频率分量和N1并行信号。 由于远用户接收机通过反离散傅里叶变换将近用户寻址信号改变为白噪声，所以远用户接收机可以高精度地解调远用户寻址信号。 近用户接收机可以通过从接收到的信号中减去远用户寻址的信号，以高精度获取寻址到其的信号。
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公开(公告)号：US20100246711A1
公开(公告)日：2010-09-30
申请号：US12682231
申请日：2008-10-10
申请人： Takaaki Kishigami , Shozo Okasaka
发明人： Takaaki Kishigami , Shozo Okasaka
CPC分类号： H04L27/3488 , H04L5/0039 , H04L5/0041 , H04L27/2604 , H04L27/2627 , H04L27/2649 , H04W52/42 , H04W88/08
摘要： A multicarrier transmitter and a multicarrier receiver both enabling improvement of the reception characteristic of hierarchical modulation multiplex communication. A base station (100) transmits a multicarrier signal which is a superposition of a modulated signal addressed to a far user and a modulated signal addressed to a near user and modulated with a modulation multivalued number different from that of the modulated signal addressed to the far user. The base station (100) comprises a DFT section (120), an S/P section (125), and a combining section (145). The DFT section (120) separates the modulated signal addressed to the far user into signals in frequency ranges for each symbol. The S/P section (125) serial/parallel-transforms the modulated signal addressed to the near user to generate N1 parallel signals. The combining section (145) combines the N1 frequency components generated by the DFT section (120) and the N1 parallel signals. Since the far user receiver can change the modulated signal addressed to the near user into white noise by IDFT, the far user receiver can demodulate the modulated signal addressed to the far user with high accuracy. The near user receiver can acquire the signal addressed thereto with high accuracy by subtracting the modulated signal addressed to the far user, which is an interference signal, from the received signal.
摘要翻译： 一种多载波发射机和多载波接收机，其能够改善分级调制多路复用通信的接收特性。 基站（100）发送作为寻址到远用户的调制信号的叠加的多载波信号和寻址到近端用户的调制信号，并且以与调制信号寻址到远端的调制多值数不同的调制多值数进行调制 用户。 基站（100）包括DFT部分（120），S / P部分（125）和组合部分（145）。 DFT部分（120）将寻址到远用户的调制信号分成每个符号的频率范围的信号。 S / P部分（125）串行/并行转换寻址到近端用户的调制信号以产生N1并行信号。 组合部分（145）组合由DFT部分（120）产生的N1个频率分量和N1个并行信号。 由于远用户接收机可以通过IDFT将寻址到近端用户的调制信号改变为白噪声，所以远用户接收机可以高精度地解调寻址给远用户的调制信号。 近用户接收机可以通过从接收信号中减去寻址到远用户的调制信号（即干扰信号），以高精度获取寻址到其的信号。
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