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A Novel Coding Technique To Minimise The Transmission Bandwidth And Bit Error Rate In DPSK


M.V.S.Sairam, B.PrabhakaraRao


Vol. 8  No. 5  pp. 345-352


We propose a novel coding technique that aims to reduce the Transmission Bandwidth (BT) and Bit Error Rate (BER) vis-?-vis Conventional Differential Phase Shift Keying (CDPSK) in digital band pass transmission. In CDPSK two successive bits are used for encoding. The proposed method encodes information with respect to the consecutive two bits b(t-Tb) and b(t-2Tb). The encoded data is keyed on to the phase. The received signal is demodulated by using the present phase φ(t) and the two phases φ(t-Tb) and φ(t-2Tb). Comparative analysis between the two techniques reveals the advantages of the proposed technique.


Encoding, decoding, modulation, demodulation, non-coherent detection, differential encoding, phase, delay, band pass channel, data rates, Bit Energy(Eb), Transmission Bandwidth(BT), Bit Error rate(BER), InterSymbol Interference(ISI), fading, Additive White Gaussian Noise, BPSK, DPSK