qpsk modulation and demodulation, the results can be observed by an oscilloscope

qpsk_mod_demod
..............\code_trans.v
..............\code_trans.v.bak
..............\db
..............\..\add_sub_07h.tdf
..............\..\add_sub_3eh.tdf
..............\..\add_sub_eqg.tdf
..............\..\add_sub_ksh.tdf
..............\..\add_sub_n3i.tdf
..............\..\add_sub_r6h.tdf
..............\..\altsyncram_5ep3.tdf
..............\..\altsyncram_fap3.tdf
..............\..\altsyncram_gap3.tdf
..............\..\altsyncram_nap3.tdf
..............\..\altsyncram_pap3.tdf
..............\..\altsyncram_rap3.tdf
..............\..\altsyncram_tap3.tdf
..............\..\cmpr_efc.tdf
..............\..\cmpr_ifc.tdf
..............\..\cmpr_lfc.tdf
..............\..\cntr_1hi.tdf
..............\..\cntr_3fi.tdf
..............\..\cntr_4fi.tdf
..............\..\cntr_5fi.tdf
..............\..\cntr_6fi.tdf
..............\..\cntr_78j.tdf
..............\..\cntr_8fi.tdf
..............\..\cntr_9fi.tdf
..............\..\cntr_afi.tdf
..............\..\cntr_gqi.tdf
..............\..\cntr_p1j.tdf
..............\..\decode_4uf.tdf
..............\..\mult_jt01.tdf
..............\..\mult_nu01.tdf
..............\..\mult_pu01.tdf
..............\..\mult_t6n.tdf
..............\..\mux_irc.tdf
..............\..\pll2_altpll.v
..............\..\PLL_altpll.v
..............\..\prev_cmp_qpsk_mod_demod.asm.qmsg
..............\..\prev_cmp_qpsk_mod_demod.fit.qmsg
..............\..\prev_cmp_qpsk_mod_demod.map.qmsg
..............\..\prev_cmp_qpsk_mod_demod.qmsg
..............\..\prev_cmp_qpsk_mod_demod.sta.qmsg
..............\..\qpsk_mod_demod.ae.hdb
..............\..\qpsk_mod_demod.asm.qmsg
..............\..\qpsk_mod_demod.asm_labs.ddb
..............\..\qpsk_mod_demod.cbx.xml
..............\..\qpsk_mod_demod.cmp.bpm
..............\..\qpsk_mod_demod.cmp.cdb
..............\..\qpsk_mod_demod.cmp.ecobp
..............\..\qpsk_mod_demod.cmp.hdb
..............\..\qpsk_mod_demod.cmp.kpt
..............\..\qpsk_mod_demod.cmp.logdb
..............\..\qpsk_mod_demod.cmp.rdb
..............\..\qpsk_mod_demod.cmp_merge.kpt
..............\..\qpsk_mod_demod.cuda_io_sim_cache.45um_ff_1200mv_0c_fast.hsd
..............\..\qpsk_mod_demod.cuda_io_sim_cache.45um_ss_1200mv_85c_slow.hsd
..............\..\qpsk_mod_demod.db_info
..............\..\qpsk_mod_demod.eco.cdb
..............\..\qpsk_mod_demod.fit.qmsg
..............\..\qpsk_mod_demod.hier_info
..............\..\qpsk_mod_demod.hif
..............\..\qpsk_mod_demod.lpc.html
..............\..\qpsk_mod_demod.lpc.rdb
..............\..\qpsk_mod_demod.lpc.txt
..............\..\qpsk_mod_demod.map.bpm
..............\..\qpsk_mod_demod.map.cdb
..............\..\qpsk_mod_demod.map.ecobp
..............\..\qpsk_mod_demod.map.hdb
..............\..\qpsk_mod_demod.map.kpt
..............\..\qpsk_mod_demod.map.logdb
..............\..\qpsk_mod_demod.map.qmsg
..............\..\qpsk_mod_demod.map_bb.cdb
..............\..\qpsk_mod_demod.map_bb.hdb
..............\..\qpsk_mod_demod.map_bb.logdb
..............\..\qpsk_mod_demod.pre_map.cdb
..............\..\qpsk_mod_demod.pre_map.hdb
..............\..\qpsk_mod_demod.rpp.qmsg
..............\..\qpsk_mod_demod.rtlv.hdb
..............\..\qpsk_mod_demod.rtlv_sg.cdb
..............\..\qpsk_mod_demod.rtlv_sg_swap.cdb
..............\..\qpsk_mod_demod.sgate.rvd
..............\..\qpsk_mod_demod.sgate_sm.rvd
..............\..\qpsk_mod_demod.sgdiff.cdb
..............\..\qpsk_mod_demod.sgdiff.hdb
..............\..\qpsk_mod_demod.sld_design_entry.sci
..............\..\qpsk_mod_demod.sld_design_entry_dsc.sci
..............\..\qpsk_mod_demod.sta.qmsg
..............\..\qpsk_mod_demod.sta.rdb
..............\..\qpsk_mod_demod.sta_cmp.8_slow_1200mv_85c.tdb
..............\..\qpsk_mod_demod.syn_hier_info
..............\..\qpsk_mod_demod.tiscmp.fast_1200mv_0c.ddb
..............\..\qpsk_mod_demod.tiscmp.slow_1200mv_0c.ddb
..............\..\qpsk_mod_demod.tiscmp.slow_1200mv_85c.ddb
..............\..\qpsk_mod_demod.tis_db_list.ddb
..............\..\qpsk_mod_demod_global_asgn_op.abo
..............\fir.v
..............\fir.v.bak
..............\fir_lowpass.v.bak

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