Region division assignment of orthogonal variable-spreading-factor codes in W-CDMA. - Rujipun Assarut; Ken'ichi Kawanishi; Ushio Yamamoto; Yoshikuni Onozato; Masahiko Matsushita (VTC Fall, 2001)

Performance evaluation of orthogonal variable-spreading-factor code assignment schemes in W-CDMA. - Rujipun Assarut; Ken'ichi Kawanishi; Rajkumar Deshpande; Ushio Yamamoto; Yoshikuni Onozato (ICC, 2002)

Data rate improvement with dynamic reassignment of spreading codes for DS-CDMA. - Rujipun Assarut; Milda G. Husada; Ushio Yamamoto; Yoshikuni Onozato (Comput. Commun., 2002)

Region Division Assignment: A New OVSF Code Reservation and Assignment Scheme for Downlink Capacity in W-CDMA Systems. - Rujipun Assarut; Ken'ichi Kawanishi; Ushio Yamamoto; Yoshikuni Onozato (Wirel. Networks, 2006)