多天线信号合并中相位加权值的修正查表算法及FPGA实现

An improved non-linear look-up table scheme of phase weighted value for multi-antenna signal and its FPGA implementation

针对白码查表法的储存器利用效率不高问题,给出了一种改进的基于非线性编码的算法和流水线结构,并通过VHDL语言编程,在FPGA上加以实现。仿真结果表明,与白码查表法的计算结果进行比较,非线性编码查表法提高了查表精确度,降低了查找表的大小,便于FPGA实现。

Aimed at low storage utilization efficiency of the general look-up table arithmetic, this paper presents an improved non-linear look-up table arithmetic and its pipeline structure, and implements this arithmetic on FPGA through in VHDL. Compared with the simulation results of general look-up table arithmetic, non-linear code look-up table improves the accuracy by non-linear coding , this improved arithmetic also reduces the look-up table size and its very suitable for FPGA chips to run.