Performance Improvement of DS-CDMA Wireless Communication Network With Convolutionally Encoded OQPSK Modulation Scheme
This paper considers the bit error probability analysis of Direct-Sequence Code-Division Multiple Access (DS-CDMA) system. A statistical characterization of the decision variable at transmitter and receiver is obtained. System is simulated with OQPSK modulation scheme which when compared with conventional Binary Phase Shift Keying (BPSK) gives improved performance in terms of Probability of Error (PE). Convolution coding is further incorporated with both of the modulations schemes and results show that this coding further improves the system when compared without coding.