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    • 1. 发明申请
    • Diversity transmitter-receiver in cdma system using space-time code, and method thereof
    • 使用时空码的cdma系统中的分集发射机 - 接收机及其方法
    • US20090207890A1
    • 2009-08-20
    • US10593011
    • 2004-12-21
    • Dong-Woon BaiWoo-Yong LeeHyun-Seo Oh
    • Dong-Woon BaiWoo-Yong LeeHyun-Seo Oh
    • H04B1/707
    • H04L1/065H04B1/707H04B7/02
    • A diversity transmitting/receiving apparatus and method is provided, which is implemented using space-time trellis codes (STTC) constructed from a Pseudo Noise (PN) sequence set in a Direct Sequence (DS) CDMA system. The transmitter comprises a PN sequence generator, a space-time encoder, first and second modulators, and first and second multiple transmit antennas. The space-time encoder selects two of the multiple PN sequences to construct STTC, and space-time encodes data from a data source according to the STTC to output an Wary data symbol. The two modulators modulate the space-time encoded data according to the STTC. The two multiple transmit antennas wirelessly transmit outputs of the two modulators, respectively. By applying a method using space-time coding in a DS CDMA system including multiple transmit antennas, it is possible to achieve both diversity and additional coding gain and also to reduce multiple user interference by increasing the PN sequence length.
    • 提供了一种分集发送/接收装置和方法,其使用由在直接序列(DS)CDMA系统中设置的伪噪声(PN)序列构成的空时网格码(STTC)来实现。 发射机包括PN序列发生器,时空编码器,第一和第二调制器以及第一和第二多个发射天线。 空时编码器选择多个PN序列中的两个构造STTC,并且根据STTC对来自数据源的数据进行空时编码以输出谨慎数据符号。 两个调制器根据STTC调制空间编码数据。 两个多个发射天线分别无线地传输两个调制器的输出。 通过在包括多个发射天线的DS CDMA系统中应用使用空时编码的方法,可以实现分集和附加编码增益两者,并且还可以通过增加PN序列长度来减少多个用户干扰。
    • 2. 发明授权
    • Diversity transmitter-receiver in CDMA system using space-time code, and method thereof
    • 使用时空码的CDMA系统中的分集发射机 - 接收机及其方法
    • US07769077B2
    • 2010-08-03
    • US10593011
    • 2004-12-21
    • Dong-Woon BaiWoo-Yong LeeHyun-Seo Oh
    • Dong-Woon BaiWoo-Yong LeeHyun-Seo Oh
    • H04B1/00
    • H04L1/065H04B1/707H04B7/02
    • A diversity transmitting/receiving apparatus and method is provided, which is implemented using space-time trellis codes (STTC) constructed from a Pseudo Noise (PN) sequence set in a Direct Sequence (DS) CDMA system. The transmitter comprises a PN sequence generator, a space-time encoder, first and second modulators, and first and second multiple transmit antennas. The space-time encoder selects two of the multiple PN sequences to construct STTC, and space-time encodes data from a data source according to the STTC to output an Wary data symbol. The two modulators modulate the space-time encoded data according to the STTC. The two multiple transmit antennas wirelessly transmit outputs of the two modulators, respectively. By applying a method using space-time coding in a DS CDMA system including multiple transmit antennas, it is possible to achieve both diversity and additional coding gain and also to reduce multiple user interference by increasing the PN sequence length.
    • 提供了一种分集发送/接收装置和方法,其使用由在直接序列(DS)CDMA系统中设置的伪噪声(PN)序列构成的空时网格码(STTC)来实现。 发射机包括PN序列发生器,时空编码器,第一和第二调制器以及第一和第二多个发射天线。 空时编码器选择多个PN序列中的两个构造STTC,并且根据STTC对来自数据源的数据进行空时编码以输出谨慎数据符号。 两个调制器根据STTC调制空间编码数据。 两个多个发射天线分别无线地传输两个调制器的输出。 通过在包括多个发射天线的DS CDMA系统中应用使用空时编码的方法,可以实现分集和附加编码增益两者,并且还可以通过增加PN序列长度来减少多个用户干扰。