Use matlab important wireless communication QPSK modulation technique simulation design, including modulation, channel environment simulation, demodulation, the most important thing is to solve the wireless communications carrier synchronization problem, frequency offset and phase deviation were estimated, also achieved a symbol synchronization.

QPSK完整15\bi_to_uni.m
..........\carrier_mod.m
..........\carrier_remod.m
..........\despread_spectrum.m
..........\dpxs.m
..........\F2T.m
..........\jiekuozlp.m
..........\kuopinzlp.m
..........\kuopinzlp1.m
..........\lpf.m
..........\m_sequence.m
..........\par_to_ser.m
..........\qpskzlp.m
..........\qpskzlpbeifen.m
..........\rf_mod.m
..........\ser_to_par.m
..........\spread_spectrum.m
..........\T2F.m
QPSK完整15

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