Title	Design of FIR Filter Using Differential Evolution Optimization & to Study its Effect as a Pulse-Shaping Filter in a QPSK Modulated System
Author	S. Chattopadhyay, S.K. Sanyal, A. Chandra
Citation	Vol. 10  No. 1  pp. 313-321
Keywords	DE, FIR digital filter, Minimax error, QPSK

Title	Performance Analysis of Different Spreading Codes in CDMA System Environment for Multi-User Adaptive SDR Environment
Author	M.Saravanan, S.Ravi
Citation	Vol. 11  No. 7  pp. 28-37
Keywords	CDMA, Gold Codes, QPSK modulation, Bit error rate (BER)