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AWR1843: HWA 1DFFT加窗后的结果丢弃了多少位

Part Number: AWR1843


从HWA手册上的描述:‘’The output of this multiplication is rounded back to 24-bit I and 24-bit Q by dropping excess LSBs.” 推出:rangefft计算时,24bit的ADC数据和18bit的blackman窗相乘,相乘后结果再变为24bit是drop了LSBs,但没有说多少位,猜测是drop了17位,也就是除以2^17。用同样的ADC数据在MATLAB中验证,结果等于加窗后除以2^19。请问2^19来源是什么