【摘要】 FFT处理器、均衡器和相位跟踪器是IEEE 802.11a接收机中级联的三个处理模块。通过对这三个处理模块中所包含的运算进行分析,提出合并FFT处理器和均衡器中的幅值运算,同时对均衡器和相位跟踪器的相位运算进行联合,从而简化了接收机结构。在设计中使用双模CORDIC处理器分时完成相位误差计算和相位补偿以减少所需硬件资源。更多还原

【Abstract】 FFT processor,one-tap equalizer,and phase tracker are three concatenated blocks in IEEE 802.11a receiver.Based on the analysis of operations in these blocks,this paper proposes to combine the magnitude operations in FFT processor and equalizer,and co-design the phase operations in equalizer and phase tracker,which simplify the architecture of the receiver.In the design,a dual-mode CORDIC processor is used to compute the phase error and correct the phase at different periods of time in order to reduce the required hardware resource.更多还原