《dsp的課程設(shè)計》word版-預(yù)覽頁
【正文】 .sect rfft_prg rfft_rask: SSBX FRCT STM STACK+10, SP STM sine, AR1 RPT K_TWID_TBL_SIZE1 8 MVPD sine1, *AR1+ STM cosine, AR1 RPT K_TWID_TBL_SIZE1 MVPD cosine1, *AR1+ CALL bit_rev CALL fft CALL power RET ************************ 位碼倒置程序 bit_rev ******************* .asg AR2, REORDERED .asg AR3,ORIGINAL_INPUT .asg AR7, DATA_PROC_BUF .sect rfft_prg 。 .asg AR1, GROUP_COUNTER .asg AR2, PX .asg AR3, QX .asg AR4, WR 9 .asg AR5, WI .asg AR6, BUTTERFLY_COUNTER .asg AR7, STAGE_COUNTER .sect rfft_prg fft: 。 STM fft_data, PX STM fft_data+K_DATA_IDX_2, QX STM K_FFT_SIZE/41, BRC LD *PX, 16, A 10 RPTBD stage2_end1 STM K_DATA_IDX_2+1, AR0 SUB *QX, 16, A, B ADD *QX, 16, A STH A, ASM, *PX+ ST B, *QX+ ||LD *PX, A SUB *QX, 16, A, B ADD *QX, 16, A STH A, ASM, *PX+ STH B, ASM, *QX+ MAR *QX+ ADD *PX, *QX, A SUB *PX, *QX, B STH A, ASM, *PX+ SUB *PX, *QX, A ST B, *QX ||LD *QX+, B ST A, *PX ||ADD *PX+0%, A ST A, *QX+0% ||LD *PX, A 。stage: STM fft_data, PX LD d_data_idx, A ADD *(PX), A STLM A, QX MVDK d_grps_t, GROUP_COUNTER 。***********************//功率譜計算子程序 power //*********************
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鄂ICP備17016276號-1