Methods and apparatuses for transmitting and receiving preamble for multiple channel estimation
    1.
    发明授权
    Methods and apparatuses for transmitting and receiving preamble for multiple channel estimation 有权
    用于发送和接收用于多信道估计的前同步码的方法和装置

    公开(公告)号:US08891690B2

    公开(公告)日:2014-11-18

    申请号:US13539091

    申请日:2012-06-29

    IPC分类号: H04L27/06

    摘要: The present invention provides a method and apparatus for transmitting a preamble for multiple channel estimation. The method includes generating a channel estimation sequence, allocating the channel estimation sequence to some of a plurality of symbols in which a preamble is transmitted, and transmitting the preamble. The channel estimation sequence is generated by bisecting a sequence having a length N, generating a first sequence and a second sequence by adding a Zero-padded Suffix (ZS) having a zero value to a last part of each of the two bisected sequences, copying the first sequence and the second sequence at least once, and allocating the first sequences and the second sequences to some of the symbols.

    摘要翻译: 本发明提供一种用于发送用于多信道估计的前同步码的方法和装置。 该方法包括:生成信道估计序列,将信道估计序列分配给发送前同步码的多个符号中的一些,以及发送前导码。 信道估计序列是通过将长度为N的序列进行二等分生成的,通过将具有零值的零填充后缀(ZS)添加到两个二等分序列中的每一个的最后部分,生成第一序列和第二序列,复制 第一序列和第二序列至少一次,并且将第一序列和第二序列分配给某些符号。

    METHODS AND APPARATUSES FOR TRANSMITTING AND RECEIVING PREAMBLE FOR MULTIPLE CHANNEL ESTIMATION
    2.
    发明申请
    METHODS AND APPARATUSES FOR TRANSMITTING AND RECEIVING PREAMBLE FOR MULTIPLE CHANNEL ESTIMATION 有权
    用于多信道估计的发送和接收前缀的方法和装置

    公开(公告)号:US20130266088A1

    公开(公告)日:2013-10-10

    申请号:US13539091

    申请日:2012-06-29

    IPC分类号: H04B15/00 H04B1/10

    摘要: The present invention provides a method and apparatus for transmitting a preamble for multiple channel estimation. The method includes generating a channel estimation sequence, allocating the channel estimation sequence to some of a plurality of symbols in which a preamble is transmitted, and transmitting the preamble. The channel estimation sequence is generated by bisecting a sequence having a length N, generating a first sequence and a second sequence by adding a Zero-padded Suffix (ZS) having a zero value to a last part of each of the two bisected sequences, copying the first sequence and the second sequence at least once, and allocating the first sequences and the second sequences to some of the symbols.

    摘要翻译: 本发明提供一种用于发送用于多信道估计的前同步码的方法和装置。 该方法包括:生成信道估计序列,将信道估计序列分配给发送前同步码的多个符号中的一些,以及发送前导码。 信道估计序列是通过将长度为N的序列进行二等分生成的,通过将具有零值的零填充后缀(ZS)添加到两个二等分序列中的每一个的最后部分,生成第一序列和第二序列,复制 第一序列和第二序列至少一次,并且将第一序列和第二序列分配给某些符号。

    Method of efficient techniques in an orthogonal frequency division multiplexing system with channel evaluation
    3.
    发明申请
    Method of efficient techniques in an orthogonal frequency division multiplexing system with channel evaluation 审中-公开
    具有信道评估的正交频分复用系统中的有效技术方法

    公开(公告)号:US20080159434A1

    公开(公告)日:2008-07-03

    申请号:US11646818

    申请日:2006-12-28

    IPC分类号: H04L27/04

    CPC分类号: H04L27/2608

    摘要: A method of adaptive modulation in an OFDM system with channel evaluation with two types of adaptive transmission schemes that include several modulation schemes to achieve efficient transmission service. By evaluating channel environment, the methods select the proper modulation scheme among the BPSK, QPSK, 16QAM, and 64QAM. Therefore, the methods either increase the performance or reduce the signaling overhead. By using the method, the reliable and efficient transmission services are achieved.

    摘要翻译: 一种具有信道评估的OFDM系统中的自适应调制的方法,包括两种类型的自适应传输方案,包括若干调制方案以实现有效的传输服务。 通过评估信道环境,该方法在BPSK,QPSK,16QAM和64QAM之间选择适当的调制方案。 因此,这些方法可以提高性能或减少信令开销。 通过使用该方法,实现了可靠高效的传输服务。

    Method of enhanced detection technique for wireless MIMO communication system
    4.
    发明申请
    Method of enhanced detection technique for wireless MIMO communication system 审中-公开
    无线MIMO通信系统增强检测技术的方法

    公开(公告)号:US20080159375A1

    公开(公告)日:2008-07-03

    申请号:US11646963

    申请日:2006-12-28

    IPC分类号: H04L27/01

    摘要: A method of enhanced detection technique is used with wireless MIMO communication system. Since the performance of V-BLAST system depends on the first sub-stream detection capability, V probable streams are detected according to the first detected sub-stream of DFE detector and most probable stream is selected by likelihood test. The performance of the V-BLAST system can be improved and the decoding complexity and system performance can be controlled by adjusting the number of V.

    摘要翻译: 无线MIMO通信系统采用增强检测技术的方法。 由于V-BLAST系统的性能取决于第一子流检测能力,根据DFE检测器的第一个检测到的子流检测V个可能的流,并且通过似然测试来选择最可能的流。 可以提高V-BLAST系统的性能,通过调整V数可以控制解码复杂度和系统性能。

    Method of cooperative transmission technique in a orthogonal frequency division multiple access uplink system
    6.
    发明授权
    Method of cooperative transmission technique in a orthogonal frequency division multiple access uplink system 失效
    正交频分多址上行系统中协作传输技术的方法

    公开(公告)号:US07697904B2

    公开(公告)日:2010-04-13

    申请号:US11646817

    申请日:2006-12-28

    IPC分类号: H04B1/02

    摘要: The diversity techniques—space time block code (STBC), maximum ratio combining (MRC)—with multiple antennas provide better reliability than general system. But there are some limitations such as size, cost, hardware complexity, etc, because of multiple antennas. In this letter, we propose a cooperative transmission technique using STBC. We can overcome those limitations and give the gain of cooperative transmission diversity in a concept of virtual multi-input multi-output (MIMO) with single transmit antenna.

    摘要翻译: 具有多个天线的分集技术 - 时空块码(STBC),最大比合并(MRC) - 提供比一般系统更好的可靠性。 但由于多个天线,存在一些限制,如大小,成本,硬件复杂性等。 在这封信中,我们提出使用STBC的合作传输技术。 我们可以克服这些限制,并在单发射天线的虚拟多输入多输出(MIMO)的概念中给予协同传输分集的增益。

    Method of cooperative transmission technique in a orthogonal frequency division multiple access uplink system
    7.
    发明申请
    Method of cooperative transmission technique in a orthogonal frequency division multiple access uplink system 失效
    正交频分多址上行系统中协作传输技术的方法

    公开(公告)号:US20080159359A1

    公开(公告)日:2008-07-03

    申请号:US11646817

    申请日:2006-12-28

    IPC分类号: H04B7/17

    摘要: The diversity techniques—space time block code (STBC), maximum ratio combining (MRC)—with multiple antennas provide better reliability than general system. But there are some limitations such as size, cost, hardware complexity, etc, because of multiple antennas. In this letter, we propose a cooperative transmission technique using STBC. We can overcome those limitations and give the gain of cooperative transmission diversity in a concept of virtual multi-input multi-output (MIMO) with single transmit antenna.

    摘要翻译: 具有多个天线的分集技术 - 时空块码(STBC),最大比合并(MRC) - 提供比一般系统更好的可靠性。 但由于多个天线,存在一些限制,如大小,成本,硬件复杂性等。 在这封信中,我们提出使用STBC的合作传输技术。 我们可以克服这些限制,并在单发射天线的虚拟多输入多输出(MIMO)的概念中给予协同传输分集的增益。