公开(公告)号：US20080084951A1

公开(公告)日：2008-04-10

申请号：US11544421

申请日：2006-10-06

申请人： Helen Chen ,  Brian J. Avenell ,  Gordon R. Strachan ,  Michael C. Lawton

发明人： Helen Chen ,  Brian J. Avenell ,  Gordon R. Strachan ,  Michael C. Lawton

IPC分类号： H04B7/10

CPC分类号： H04B7/04 ,  H04B17/0087 ,  H04L1/06

摘要： Systems and methods for receiving MIMO signals for testing and analyzing operation of MIMO communications devices. Examples of systems and/or methods for receiving MIMO signals include a measuring receiver with N RF paths consisting of N downconverters. Each downconverter achieves a frequency shift of the input MIMO signal equal to a shifting frequency of a first intermediate frequency (IF) plus a delta determined by the signal bandwidth multiplied by an integer number between 1 and N. The shifted N MIMO signals are combined to generate one combined analog MIMO signal. An analog to digital converter converts the combined analog MIMO signal to a stream of digital samples where the samples may be tested and analyzed with metrics on signals communicated in a MIMO environment. Example systems and method for receiving MIMO signals may also be implemented as a MIMO channel emulator such that samples generated by the ADC may be upconverted to output copies of the original signals to a receiver DUT, for example.

摘要翻译： 用于接收MIMO信号以测试和分析MIMO通信设备的操作的系统和方法。 用于接收MIMO信号的系统和/或方法的示例包括具有由N个下变频器组成的N个RF路径的测量接收机。 每个下变频器实现输入MIMO信号的频移等于第一中间频率（IF）的移位频率加上由信号带宽乘以1与N之间的整数确定的增量。移位的N个MIMO信号被组合到 生成一个组合的模拟MIMO信号。 模数转换器将组合的模拟MIMO信号转换成数字样本流，其中样本可以通过在MIMO环境中传送的信号的度量进行测试和分析。 用于接收MIMO信号的示例系统和方法也可以被实现为MIMO信道仿真器，使得例如由ADC生成的采样可以被上变频以将原始信号的副本输出到接收机DUT。