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11. 发明授权

US06337876B1 Control of power ratios for in-phase and quadrature channels in a communications system 有权
标题翻译：控制通信系统中同相和正交信道的功率比
公开(公告)号：US06337876B1
公开(公告)日：2002-01-08
申请号：US09140470
申请日：1998-08-26
申请人： Torgny Palenius , Håkan Eriksson
发明人： Torgny Palenius , Håkan Eriksson
IPC分类号： H04L2730
CPC分类号： H04W52/16 , H03G3/3089 , H04B1/707 , H04W52/267 , H04W52/325
摘要： A transmitter in a radiocommunications system such as a Wideband Code Division Multiple Access (WCDMA) communications system transmits one set of data on an in-phase (I-) channel and another set of data on a quadrature (Q-) channel. The transmitter generates a gain signal, &bgr;, and multiplies the digital data associated with the Q-channel by the gain signal, &bgr;. Complexity of the multiplication operation is reduced by limiting the gain signal, &bgr;, to a finite number of values that are exactly representable by a predefined number of bits, such as 4-bit values to the right of a binary radix point. Modulation inaccuracy associated with quantization of &bgr; can be eliminated by utilizing the same quantized values of &bgr; in all components within the radiocommunications system.
摘要翻译：诸如宽带码分多址（WCDMA）通信系统的无线电通信系统中的发射机在正交（Q）信道上在同相（I-）信道上传送一组数据和另一组数据。发射机产生增益信号β，并将与Q信道相关联的数字数据乘以增益信号β。通过将增益信号β限制为可预定数量的位可精确地表示的有限数量的值，例如二进制小数点右侧的4位值，来减少乘法运算的复杂度。可以通过在无线电通信系统内的所有组件中使用相同的beta量化值来消除与β的量化相关联的调制不准确性。

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