I. Introduction
There have been many research results on the bent functions [2]–[3] [4], [13], [18] and binary bent sequences having optimal correlation and balance property [11], [17]. Since many communication systems such as code-division multiple-access (CDMA) systems, radar systems, and synchronization systems require sequences having low out-of-phase autocorrelation and cross-correlation values, these bent sequences can be good candidates for those systems.