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公开(公告)号:US20060182208A1
公开(公告)日:2006-08-17
申请号:US11056757
申请日:2005-02-11
申请人: In-Kyu Lee , Bong-Dae Choi , Chang-Kyung Sung , Wook-Bong Lee
发明人: In-Kyu Lee , Bong-Dae Choi , Chang-Kyung Sung , Wook-Bong Lee
CPC分类号: H04B7/02 , H04L1/0631 , H04L1/0643
摘要: The present invention provide a space time block codes (STBC) scheme, where a received signal is filtered by using a minimum mean square error (MMSE) filter, and where channel symbols are individually decoded and converted into bit information, so that an mean square error (MSE) can be minimized by using a linear superposition form applicable to the non quasi-static channel environment as well as a quasi-static channel environment. The present invention provides an STBC scheme using a MMSE filter obtained in a real linear representation method, so that transmitted data can be recovered without loss thereof even in a case where a speed of a mobile station is high.
摘要翻译: 本发明提供一种空间时间块码(STBC)方案,其中通过使用最小均方误差(MMSE)滤波器对接收信号进行滤波,并且其中信道符号被单独解码并转换成位信息,使得均方根 可以通过使用适用于非准静态信道环境的线性叠加形式以及准静态信道环境来最小化误差(MSE)。 本发明提供了一种使用以实线性表示方法获得的MMSE滤波器的STBC方案,使得即使在移动台的速度较高的情况下也可以恢复发送的数据而不丢失该数据。
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公开(公告)号:US20060182207A1
公开(公告)日:2006-08-17
申请号:US11056745
申请日:2005-02-11
申请人: In-Kyu Lee , Bong-Dae Choi , Chang-Kyung Sung
发明人: In-Kyu Lee , Bong-Dae Choi , Chang-Kyung Sung
CPC分类号: H04L1/0643 , H04B7/0669 , H04L1/0656
摘要: A receiver for a hybrid space time block codes (STBC) scheme using a nonlinear decision feedback (DFB) filter instead of a conventional linear filter which are used in the hybrid STBC scheme, that is, a combination of a spatial division multiplexing (SDM) scheme and a STBC scheme. In the receiver used for the STBC scheme, a previous-stage remaining signal is detected by using a well-known BLAST algorithm, and inter-symbol interference (ISI) is minimized by applying the previous-stage remaining signal to a current-stage signal, providing improved performance. The receiver used for the STBC scheme can be applied to a time varying channel fading environment as well as a quasi-static channel environment. According to the hybrid STBC scheme, a gain of about 3 dB can be obtained in channel environments having a frame error rate (FER) frequency efficiency of 2 and 3 Bps/Hz in the same condition by using a simulation.
摘要翻译: 一种使用非线性判决反馈(DFB)滤波器而不是在混合STBC方案中使用的常规线性滤波器的混合空间时间块码(STBC)方案的接收机,即空分多路复用(SDM) 计划和STBC计划。 在用于STBC方案的接收机中,通过使用公知的BLAST算法检测前一级剩余信号,并且通过将前一级剩余信号应用于当前级信号来最小化符号间干扰(ISI) ,提供改进的性能。 用于STBC方案的接收机可以应用于时变信道衰落环境以及准静态信道环境。 根据混合STBC方案,通过使用模拟,可以在相同条件下具有2和3Bps / Hz的帧错误率(FER)频率效率的信道环境中获得约3dB的增益。
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