公开(公告)号：US08732547B2

公开(公告)日：2014-05-20

申请号：US13566694

申请日：2012-08-03

Applicant: Yutaka Murakami ,  Kiyotaka Kobayashi ,  Choo Eng Yap

Inventor： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Choo Eng Yap

IPC: H03M13/00

CPC classification number: H03M13/1105 ,  H03M13/1102 ,  H03M13/1157 ,  H03M13/1174 ,  H03M13/1177 ,  H03M13/2909 ,  H04B7/0413 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/06 ,  H04L1/1816 ,  H04L1/1893 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0044

Abstract: In a multi-antenna communication system using LDPC codes, a simple method is used to effectively improve the received quality by performing a retransmittal of less data without restricting applicable LDPC codes. In a case of a non-retransmittal, a multi-antenna transmitting apparatus transmits, from two antennas, LDPC encoded data formed by LDPC encoding blocks. In a case of a retransmittal, the multi-antenna transmitting apparatus uses a transmission method, in which the diversity gain is higher than in the previous transmission, to transmit only a part of the LDPC encoded data as previously transmitted. For example, the only the part of the LDPC encoded data to be re-transmitted is transmitted from the single antenna.

Abstract translation: 在使用LDPC码的多天线通信系统中，使用简单的方法通过在不限制可应用的LDPC码的情况下执行更少数据的重传来有效地提高接收质量。 在非重发的情况下，多天线发送装置从两个天线发送由LDPC编码块形成的LDPC编码数据。 在重传的情况下，多天线发送装置使用分集增益高于先前发送的发送方法，仅发送如前所述的LDPC编码数据的一部分。 例如，从单个天线发送仅重新发送的LDPC编码数据的一部分。

公开(公告)号：US08775890B2

公开(公告)日：2014-07-08

申请号：US11575015

申请日：2004-09-13

Applicant: Choo Eng Yap ,  Lee Ying Loh

Inventor： Choo Eng Yap ,  Lee Ying Loh

IPC: H04L1/18

CPC classification number: H04L1/1819 ,  H03M13/09 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/6306 ,  H04B7/0413 ,  H04L1/0001 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0656 ,  H04L1/08 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1887

Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data, which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.

Abstract translation: OFDM-MIMO通信系统中的自动重发请求控制系统包括：重发模式选择部，其从（a）通过与重发相同的天线发送要重发的数据的模式（a）中选择重发模式 先前的传输，同时通过使用不需要数据重传的天线同时发送新的数据; （b）在经由另一天线同时发送新数据的同时，经由不经过重发的天线发送要重传的数据的模式; （c）使用STBC通过经由其不请求重传的天线来重传数据的模式; 和（d）使用STBC通过所有可用天线重发数据的模式。

公开(公告)号：US20120287775A1

公开(公告)日：2012-11-15

申请号：US13554748

申请日：2012-07-20

Applicant: Choo Eng YAP ,  Lee Ying Loh

Inventor： Choo Eng YAP ,  Lee Ying Loh

IPC: H04L29/14

CPC classification number: H04L1/1819 ,  H03M13/09 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/6306 ,  H04B7/0413 ,  H04L1/0001 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0656 ,  H04L1/08 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1887

Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.

Abstract translation: OFDM-MIMO通信系统中的自动重发请求控制系统包括：重发模式选择部，其从（a）通过与所述重发模式相同的天线发送要重发的数据的模式中选择重发模式 同时通过使用不需要数据重传的天线同时发送新的数据; （b）在经由另一天线同时发送新数据的同时，经由不经过重发的天线发送要重传的数据的模式; （c）使用STBC通过经由其不请求重传的天线来重传数据的模式; 和（d）使用STBC通过所有可用天线重发数据的模式。

公开(公告)号：US08261150B2

公开(公告)日：2012-09-04

申请号：US11720046

申请日：2005-11-17

Applicant: Yutaka Murakami ,  Kiyotaka Kobayashi ,  Choo Eng Yap

Inventor： Yutaka Murakami ,  Kiyotaka Kobayashi ,  Choo Eng Yap

IPC: H04L1/18

CPC classification number: H03M13/1105 ,  H03M13/1102 ,  H03M13/1157 ,  H03M13/1174 ,  H03M13/1177 ,  H03M13/2909 ,  H04B7/0413 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/06 ,  H04L1/1816 ,  H04L1/1893 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0044

Abstract: In a multi-antenna communication system using LDPC codes, a simple method is used to effectively improve the received quality by performing a retransmittal of less data without restricting applicable LDPC codes. In a case of a non-retransmittal, a multi-antenna transmitting apparatus (100) transmits, from two antennas (114A, 114B) , LDPC encoded data formed by LDPC encoding blocks (102A, 102B). In a case of a retransmittal, the multi-antenna transmitting apparatus (100) uses a transmission method, in which the diversity gain is higher than in the previous transmission, to transmit only a part of the LDPC encoded data as previously transmitted. For example, the only the part of the LDPC encoded data to be re-transmitted is transmitted from the single antenna (114A).

Abstract translation: 在使用LDPC码的多天线通信系统中，使用简单的方法通过在不限制可应用的LDPC码的情况下执行更少数据的重传来有效地提高接收质量。 在非重传的情况下，多天线发送装置（100A）从两个天线（114A，114B）发送由LDPC编码块（102A，102B）形成的LDPC编码数据。 在重传的情况下，多天线发送装置（100）使用其中分集增益高于先前传输中的传输方法来仅传送如先前发送的一部分LDPC编码数据。 例如，从单个天线（114A）发送要再次发送的LDPC编码数据的唯一部分。

公开(公告)号：US20070255993A1

公开(公告)日：2007-11-01

申请号：US11575015

申请日：2004-09-13

Applicant: Choo Eng Yap ,  Lee Ying Loh

Inventor： Choo Eng Yap ,  Lee Ying Loh

IPC: H04L1/18

CPC classification number: H04L1/1819 ,  H03M13/09 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/6306 ,  H04B7/0413 ,  H04L1/0001 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0656 ,  H04L1/08 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1887

Abstract: An automatic retransmission request control system in OFDM-MIMO communication system. In this system, an ACK/NACK output part (320) of a receiver transmits, to a transmitter, a feedback information of positive or negative response based on the result of a cyclic redundancy check. An error data stream decision part (310) of the transmitter determines, based on the feedback information, a data stream that need be retransmitted, and a retransmission mode selection part (312) selects a retransmission mode from among (a) a mode in which to transmit the data, which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.

Abstract translation: OFDM-MIMO通信系统中的自动重传请求控制系统。 在该系统中，接收机的ACK / NACK输出部分（320）基于循环冗余校验的结果向发射机发送正或负响应的反馈信息。 发射机的误差数据流判定部（310）基于反馈信息，决定需要重发的数据流，重传模式选择部（312）从（a） 通过与先前传输中相同的天线来传输要重发的数据，同时通过使用不经过数据重传的天线同时发送新数据; （b）在经由另一天线同时发送新数据的同时，经由不经过重发的天线发送要重传的数据的模式; （c）使用STBC通过经由其不请求重传的天线来重传数据的模式; 和（d）使用STBC通过所有可用天线重发数据的模式。

公开(公告)号：US20120263250A1

公开(公告)日：2012-10-18

申请号：US13532576

申请日：2012-06-25

Applicant: Choo Eng YAP ,  Lee Ying Loh

Inventor： Choo Eng YAP ,  Lee Ying Loh

IPC: H04L27/28

CPC classification number: H04L1/1819 ,  H03M13/09 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/6306 ,  H04B7/0413 ,  H04L1/0001 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0656 ,  H04L1/08 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1887

Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data, which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.

Abstract translation: OFDM-MIMO通信系统中的自动重发请求控制系统包括：重发模式选择部，其从（a）通过与重发相同的天线发送要重发的数据的模式（a）中选择重传模式 先前的传输，同时通过使用不需要数据重传的天线同时发送新的数据; （b）在经由另一天线同时发送新数据的同时，经由不经过重发的天线发送要重传的数据的模式; （c）使用STBC通过经由其不请求重传的天线来重传数据的模式; 和（d）使用STBC通过所有可用天线重发数据的模式。

公开(公告)号：US20120230257A1

公开(公告)日：2012-09-13

申请号：US13478996

申请日：2012-05-23

Applicant: Choo Eng YAP ,  Lee Ying LOH

Inventor： Choo Eng YAP ,  Lee Ying LOH

IPC: H04W4/00

CPC classification number: H04L1/1819 ,  H03M13/09 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/6306 ,  H04B7/0413 ,  H04L1/0001 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0656 ,  H04L1/08 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1887

Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data, which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.

Abstract translation: OFDM-MIMO通信系统中的自动重发请求控制系统包括：重发模式选择部，其从（a）通过与重发相同的天线发送要重发的数据的模式（a）中选择重发模式 先前的传输，同时通过使用不需要数据重传的天线同时发送新的数据; （b）在经由另一天线同时发送新数据的同时，经由不经过重发的天线发送要重传的数据的模式; （c）使用STBC通过经由其不请求重传的天线来重传数据的模式; 和（d）使用STBC通过所有可用天线重发数据的模式。

公开(公告)号：US09015546B2

公开(公告)日：2015-04-21

申请号：US13554748

申请日：2012-07-20

Applicant: Choo Eng Yap ,  Lee Ying Loh

Inventor： Choo Eng Yap ,  Lee Ying Loh

IPC: H04L1/18 ,  H03M13/00 ,  H04L1/06 ,  H03M13/09 ,  H03M13/23 ,  H03M13/29 ,  H04L1/00

CPC classification number: H04L1/1819 ,  H03M13/09 ,  H03M13/23 ,  H03M13/2957 ,  H03M13/6306 ,  H04B7/0413 ,  H04L1/0001 ,  H04L1/0625 ,  H04L1/0643 ,  H04L1/0656 ,  H04L1/08 ,  H04L1/1822 ,  H04L1/1825 ,  H04L1/1887

Abstract: An automatic retransmission request control system in an OFDM-MIMO communication system includes a retransmission mode selection part which selects a retransmission mode from among (a) a mode in which to transmit the data which are to be retransmitted, via the same antenna as in the previous transmission, while transmitting, at the same time, new data by use of an antenna via which no data retransmission is requested; (b) a mode in which to transmit the data, which are to be retransmitted, via an antenna via which no retransmission is requested, while transmitting new data via another antenna at the same time; (c) a mode in which to use STBC to retransmit the data via an antenna via which no retransmission is requested; and (d) a mode in which to use STBC to retransmit the data via all the available antennas.

Abstract translation: OFDM-MIMO通信系统中的自动重发请求控制系统包括：重发模式选择部，其从（a）通过与所述重发模式相同的天线发送要重发的数据的模式中选择重发模式 同时通过使用不需要数据重传的天线同时发送新的数据; （b）在经由另一天线同时发送新数据的同时，经由不经过重发的天线发送要重传的数据的模式; （c）使用STBC通过经由其不请求重传的天线来重传数据的模式; 和（d）使用STBC通过所有可用天线重发数据的模式。

公开(公告)号：US20120304035A1

公开(公告)日：2012-11-29

申请号：US13566694

申请日：2012-08-03

Applicant: Yutaka MURAKAMI ,  Kiyotaka KOBAYASHI ,  Choo Eng YAP

Inventor： Yutaka MURAKAMI ,  Kiyotaka KOBAYASHI ,  Choo Eng YAP

IPC: H03M13/05 ,  G06F11/10

CPC classification number: H03M13/1105 ,  H03M13/1102 ,  H03M13/1157 ,  H03M13/1174 ,  H03M13/1177 ,  H03M13/2909 ,  H04B7/0413 ,  H04L1/0045 ,  H04L1/0057 ,  H04L1/0061 ,  H04L1/06 ,  H04L1/1816 ,  H04L1/1893 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0044

Abstract: In a multi-antenna communication system using LDPC codes, a simple method is used to effectively improve the received quality by performing a retransmittal of less data without restricting applicable LDPC codes. In a case of a non-retransmittal, a multi-antenna transmitting apparatus transmits, from two antennas, LDPC encoded data formed by LDPC encoding blocks. In a case of a retransmittal, the multi-antenna transmitting apparatus uses a transmission method, in which the diversity gain is higher than in the previous transmission, to transmit only a part of the LDPC encoded data as previously transmitted. For example, the only the part of the LDPC encoded data to be re-transmitted is transmitted from the single antenna.

Abstract translation: 在使用LDPC码的多天线通信系统中，使用简单的方法通过在不限制可应用的LDPC码的情况下执行更少数据的重传来有效地提高接收质量。 在非重发的情况下，多天线发送装置从两个天线发送由LDPC编码块形成的LDPC编码数据。 在重传的情况下，多天线发送装置使用分集增益高于先前发送的发送方法，仅发送如前所述的LDPC编码数据的一部分。 例如，从单个天线发送仅重新发送的LDPC编码数据的一部分。

公开(公告)号：US20090067528A1

公开(公告)日：2009-03-12

申请号：US11718569

申请日：2004-11-11

Applicant: Lee Ying Loh ,  Choo Eng Yap

Inventor： Lee Ying Loh ,  Choo Eng Yap

IPC: H04L1/02 ,  H04L27/00 ,  H04J11/00

CPC classification number: H04L1/0625 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0656 ,  H04L1/1607 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/006 ,  H04W52/262 ,  H04W52/42

Abstract: A system for link adaptation in a MIMO-OFDM system. In this system, the V-BLAST processor (308) performs V-BLAST processing and separates receive signals for the multiple antennas of the transmitter into data streams. The vector information output section (312) sends feedback vector information obtained from V-BLAST processing to the transmitter. The adaptive bit assignment section (304) adaptively controls the number of bits to be assigned to each of the sub-carriers on different antennas, based on the feedback vector information. The adaptive power allocation section (306) adaptively allocates power to each antenna, based on the feedback vector information.

Abstract translation: 一种用于MIMO-OFDM系统中的链路自适应的系统。 在该系统中，V-BLAST处理器（308）执行V-BLAST处理，并将发射机的多个天线的接收信号分离成数据流。 矢量信息输出部（312）将从V-BLAST处理得到的反馈矢量信息发送给发送机。 自适应位分配部（304）基于反馈矢量信息自适应地控制分配给不同天线上的每个子载波的比特数。 自适应功率分配部（306）基于反馈矢量信息自适应地分配给每个天线的功率。