Abstract :
Consideration is given to a possibility of constant modulus (CM) interference rejection at a DSSS/QPSK transmission system. A new structure, called /spl xi//sub CM/, is proposed. Compared to a complex two-sided filter, the /spl xi//sub CM/ structure gives better error probability for at least two orders of magnitude. The appliance of the new structure is especially significant within the range of high CM interference power.