This m file draw the BER curve of the differential QPSK over the AWGN channel.

DQPSK\BCJR decoder
.....\............\conversion.m
.....\............\DBPSK_1.asv
.....\............\DBPSK_1.m
.....\............\DBPSK_uncoded.asv
.....\............\DBPSK_uncoded.m
.....\............\DQPSK_BCJR.asv
.....\............\DQPSK_BCJR.m
.....\............\DQPSK_BCJR_1.asv
.....\............\DQPSK_BCJR_1.m
.....\............\DQPSK_uncoded.asv
.....\............\logBCJR.asv
.....\............\logBCJR.m
.....\............\logBCJR_acc.asv
.....\............\logBCJR_acc.m
.....\............\logBCJR_cwllr.asv
.....\............\logBCJR_cwllr.m
.....\............\logBCJR_infllr.asv
.....\............\logBCJR_infllr.m
.....\............\logBCJR_infllr_1.asv
.....\............\logBCJR_infllr_1.m
.....\............\mapping_dqpsk.m
.....\............\permuator.m
.....\Coherent demodulation
.....\.....................\DBPSK_1.m
.....\.....................\DQPSK_2.asv
.....\.....................\DQPSK_2.m
.....\Differential demodulation
.....\.........................\10.1.1.18.2645.pdf
.....\.........................\BCJR.asv
.....\.........................\chap9.pdf
.....\.........................\DBPSK_1.asv
.....\.........................\DQPSK_1.asv
.....\.........................\DQPSK_2.asv
.....\.........................\DQPSK_DIFFERENTIAL.asv
.....\.........................\DQPSK_DIFFERENTIAL.m
.....\.........................\getPDF.pdf
.....\.........................\Iterative decoding of CODED DPSK systems.pdf
.....\.........................\Turbo DPSK iterative differential PSK demodulationand channel.pdf

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