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公开(公告)号：US06369757B1
公开(公告)日：2002-04-09
申请号：US09610470
申请日：2000-07-05
申请人： Yoo S. Song , Hyuck M. Kwon , Kyung M. Min
发明人： Yoo S. Song , Hyuck M. Kwon , Kyung M. Min
IPC分类号： G01S316
摘要： A smart antenna, i.e., blind adaptive antenna array, is a method and system to suppress multiple access interference and to improve performance, for example in a code division multiple access (CDMA) wireless communications system, including third generation (3 g) cdma2000 and wide band (W)-CDMA. A convergence parameter is employed in a smart antenna processor. In general, a constant convergence parameter value is empirically determined and used after studying the convergence speed and the steady state mean square error (MSE) or other performance data, such as bit error rate. As the convergence parameter value increases, the convergence speed also increases but the MSE increases unfortunately, and vice versa. The traditional smart antenna with a constant convergence parameter would yield poor performance when the channel environment changes, which is true particularly when a mobile user moves around. In the present invention, the convergence parameter value is adaptively changed and employed in a smart antenna processor. Two exemplary methods to update the convergence parameter are described. By employing such an adaptive convergence parameter value, convergence speed can be increased and the steady state MSE can be decreased.
摘要翻译： 智能天线（即盲自适应天线阵列）是一种抑制多址干扰并提高性能的方法和系统，例如在包括第三代（3g）cdma2000的码分多址（CDMA）无线通信系统中， 宽带（W）-CDMA。 在智能天线处理器中采用会聚参数。 一般来说，经过收敛速度和稳态均方误差（MSE）或其他性能数据（比特误码率）的研究后，经验确定并使用恒定的收敛参数值。 随着收敛参数值的增加，收敛速度也增加，但MSE增加不幸，反之亦然。 具有恒定收敛参数的传统智能天线在通道环境变化时会产生较差的性能，特别是在移动用户移动时尤其如此。 在本发明中，在智能天线处理器中自适应地改变并采用会聚参数值。 描述用于更新收敛参数的两个示例性方法。 通过采用这种自适应收敛参数值，可以增加收敛速度，并可以减小稳态MSE。
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公开(公告)号：US07272167B2
公开(公告)日：2007-09-18
申请号：US11498477
申请日：2006-08-03
申请人： Yoo S. Song , Hyuck M. Kwon
发明人： Yoo S. Song , Hyuck M. Kwon
IPC分类号： H04K1/00
CPC分类号： H04B7/0848 , H04B1/7085
摘要： A pseudonoise code teaching loop (PNCTL) measures the difference in energy between a smart antenna array output that is despread using an early pseudonoise code and a late pseudonoise code and contains a chip time shifting current based on this difference. Using multiple elements of the array significantly improves performance.
摘要翻译： 伪噪声码教学循环（PNCTL）测量使用早期伪噪声码解码的智能天线阵列输出与后期伪噪声码之间的能量差异，并且基于该差异包含码片时移电流。 使用阵列的多个元素可显着提高性能。
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