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    • 1. 发明授权
    • Preamble formats for MIMO wireless communications
    • 用于MIMO无线通信的前导格式
    • US07423989B2
    • 2008-09-09
    • US10973595
    • 2004-10-26
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • H04Q7/00H04Q7/24H03C7/02H04B1/02H04B7/02
    • H04B7/0667
    • A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna of the MIMO wireless communication, generating a carrier detect field, wherein, from transmit antenna to transmit antenna, the carrier detect field is cyclically shifted. The method continues by, for a first grouping of the transmit antennas of the MIMO wireless communication: generating a first guard interval following the carrier detect field; and generating at least one channel sounding field, wherein, from transmit antenna to transmit antenna in the first grouping, the at least one channel sounding field is cyclically shifted, and wherein the at least one channel sounding field follows the first guard interval. The method continues by, when the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas: generating at least one other channel sounding field, wherein, from transmit antenna to transmit antenna in the another grouping, the at least one other channel sounding field is cyclically shifted, and wherein the at least one other channel sounding field follows the at least one channel sounding field; and generating the first guard interval prior to the at least one other channel sounding field.
    • 用于生成多输入多输出(MIMO)无线通信的帧的前同步码的方法,针对MIMO无线通信的每个发射天线开始,生成载波检测场,其中,从发射天线到发射天线,载波 检测场循环移位。 对于MIMO无线通信的发射天线的第一组,该方法继续:产生载波检测域之后的第一保护间隔; 以及产生至少一个信道探测场,其中,从所述第一分组中的发射天线到所述发射天线,所述至少一个信道探测场被循环移位,并且其中所述至少一个信道探测场跟随所述第一保护间隔。 当MIMO无线通信包括多于发射天线的第一组合时,该方法继续用于发射天线的另一组:产生至少一个其它信道探测场,其中从另一组中的发射天线到发射天线 ,所述至少一个其它信道探测场被循环移位,并且其中所述至少一个其它信道探测场跟随所述至少一个信道探测场; 以及在所述至少一个其它信道探测场之前产生所述第一保护间隔。
    • 2. 发明申请
    • PREAMBLE FORMATS FOR MIMO WIRELESS COMMUNICATIONS
    • MIMO无线通信的前缀格式
    • US20120321015A1
    • 2012-12-20
    • US13593745
    • 2012-08-24
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • H04B7/06
    • H04B7/0667
    • A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna, generating a carrier detect field. The method continues by, for a first grouping of the transmit antennas, generating a first guard interval, and at least one channel sounding field. Continuing, the method applies cyclical shift prior to transmission via the first grouping of the transmit antennas. When the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas. For the another grouping of the transmit antennas, generating at least one other channel sounding field. The method proceeds by generating the first guard interval prior to the at least one other channel sounding field, and applying another cyclical shift prior to transmission via the another grouping of the transmit antennas.
    • 用于生成多输入多输出(MIMO)无线通信的帧的前同步码的方法由每个发射天线开始,生成载波检测场。 对于发射天线的第一组,产生第一保护间隔和至少一个信道探测场,继续该方法。 继续地,该方法在通过发射天线的第一组发射之前应用周期性移位。 当MIMO无线通信包括多于发射天线的第一组时,对于另一组发射天线。 对于发射天线的另一组,产生至少一个其它信道探测场。 该方法通过在至少一个其它信道探测场之前产生第一保护间隔,并且在经由另一组发射天线的传输之前应用另一个循环移位来进行。
    • 3. 发明授权
    • Configuring a MIMO communication
    • 配置MIMO通信
    • US07233773B2
    • 2007-06-19
    • US10973549
    • 2004-10-26
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • H04B1/00H04B7/00
    • H04B7/0613
    • A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a first preamble for a first antenna of the MIMO communication, wherein the first preamble includes a carrier detect field, a first channel select field, a first signal field, and a second signal field. The method continues by generating a second preamble for at least one other antenna of the MIMO communication, wherein the second preamble includes the carrier detect field, a plurality of channel select fields, and the second signal field. The method continues by simultaneously transmitting the carrier detect field via the first antenna and the least one other antenna. The method continues by transmitting the first channel select field and the first signal field via the first antenna. The method continues by, subsequent to the transmitting the first channel select field and the first signal field via the first antenna, transmitting the plurality of channel select fields via the at least one other antenna. The method continues by simultaneously transmitting the second signal field via the first antenna and the at least one other antenna.
    • 一种用于配置多输入多输出(MIMO)无线通信的方法开始于为MIMO通信的第一天线生成第一前导码,其中第一前同步码包括载波检测字段,第一信道选择字段,第一信号字段, 和第二信号场。 该方法继续通过为MIMO通信的至少一个其他天线生成第二前导码,其中第二前同步码包括载波检测字段,多个信道选择字段和第二信号字段。 该方法通过经由第一天线和至少另一个天线同时发送载波检测场而继续。 该方法通过经由第一天线发送第一信道选择字段和第一信号字段而继续。 在通过第一天线发送第一信道选择字段和第一信号字段之后,该方法继续,经由至少一个其他天线发送多个信道选择字段。 该方法通过经由第一天线和至少一个其它天线同时发送第二信号场来继续。
    • 6. 发明申请
    • Preamble Formats for MIMO Wireless Communications
    • MIMO无线通信的前缀格式
    • US20080310351A1
    • 2008-12-18
    • US12173796
    • 2008-07-15
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • H04Q7/00
    • H04B7/0667
    • A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna of the MIMO wireless communication, generating a carrier detect field, wherein, from transmit antenna to transmit antenna, the carrier detect field is cyclically shifted. The method continues by, for a first grouping of the transmit antennas of the MIMO wireless communication: generating a first guard interval following the carrier detect field; and generating at least one channel sounding field, wherein, from transmit antenna to transmit antenna in the first grouping, the at least one channel sounding field is cyclically shifted, and wherein the at least one channel sounding field follows the first guard interval. The method continues by, when the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas: generating at least one other channel sounding field, wherein, from transmit antenna to transmit antenna in the another grouping, the at least one other channel sounding field is cyclically shifted, and wherein the at least one other channel sounding field follows the at least one channel sounding field; and generating the first guard interval prior to the at least one other channel sounding field.
    • 用于生成多输入多输出(MIMO)无线通信的帧的前同步码的方法,针对MIMO无线通信的每个发射天线开始,生成载波检测场,其中,从发射天线到发射天线,载波 检测场循环移位。 对于MIMO无线通信的发射天线的第一组,该方法继续:产生载波检测域之后的第一保护间隔; 以及产生至少一个信道探测场,其中,从所述第一分组中的发射天线到所述发射天线,所述至少一个信道探测场被循环移位,并且其中所述至少一个信道探测场跟随所述第一保护间隔。 当MIMO无线通信包括多于发射天线的第一组合时,该方法继续用于发射天线的另一组:产生至少一个其它信道探测场,其中从另一组中的发射天线到发射天线 ,所述至少一个其它信道探测场被循环移位,并且其中所述至少一个其它信道探测场跟随所述至少一个信道探测场; 以及在所述至少一个其它信道探测场之前产生所述第一保护间隔。
    • 7. 发明授权
    • Preamble formats for MIMO wireless communications
    • 用于MIMO无线通信的前导格式
    • US07991009B2
    • 2011-08-02
    • US12173796
    • 2008-07-15
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • Christopher J. HansenJason A. TrachewskyR. Tushar MoortiMatthew J. FischerChristopher Young
    • H04J3/24H04J11/00H04W4/00H03C7/02H04B1/02H04B7/02H04B1/00
    • H04B7/0667
    • A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for each transmit antenna of the MIMO wireless communication, generating a carrier detect field, wherein, from transmit antenna to transmit antenna, the carrier detect field is cyclically shifted. The method continues by, for a first grouping of the transmit antennas of the MIMO wireless communication: generating a first guard interval following the carrier detect field; and generating at least one channel sounding field, wherein, from transmit antenna to transmit antenna in the first grouping, the at least one channel sounding field is cyclically shifted, and wherein the at least one channel sounding field follows the first guard interval. The method continues by, when the MIMO wireless communication includes more than the first grouping of the transmit antennas, for another grouping of the transmit antennas: generating at least one other channel sounding field, wherein, from transmit antenna to transmit antenna in the another grouping, the at least one other channel sounding field is cyclically shifted, and wherein the at least one other channel sounding field follows the at least one channel sounding field; and generating the first guard interval prior to the at least one other channel sounding field.
    • 用于生成多输入多输出(MIMO)无线通信的帧的前同步码的方法,针对MIMO无线通信的每个发射天线开始,生成载波检测场,其中,从发射天线到发射天线,载波 检测场循环移位。 对于MIMO无线通信的发射天线的第一组,该方法继续:产生载波检测域之后的第一保护间隔; 以及产生至少一个信道探测场,其中,从所述第一组中的发射天线到所述发射天线,所述至少一个信道探测场被循环移位,并且其中所述至少一个信道探测场跟随所述第一保护间隔。 当MIMO无线通信包括多于发射天线的第一组合时,该方法继续用于发射天线的另一组:产生至少一个其它信道探测场,其中从另一组中的发射天线到发射天线 ,所述至少一个其它信道探测场被循环移位,并且其中所述至少一个其它信道探测场跟随所述至少一个信道探测场; 以及在所述至少一个其它信道探测场之前产生所述第一保护间隔。