System and method for allocating frequency resource in a multicell communication system

A system for allocating frequency resources in a serving cell in a multicell communication system including a plurality of cells, the system comprising:

• a controller for dividing a frequency band into a plurality of segment bands, dividing the frequency band into the plurality of band groups by mapping the plurality of segment bands such that at least one segment band among the plurality of segment bands is allocated to a band group, mapping a plurality of band groups such that a first band group is allocated to a center band, mapping the plurality of band groups such that the remaining band groups other than the first band group among the plurality of band groups are allocated to reuse band groups, and if there is user data targeting a plurality of subscriber stations, allocating a plurality of band groups to be used for transmitting user data for each of the subscriber stations among the plurality of band groups;
• a band group allocator for, under the control of the controller, allocating user data for each of the subscriber stations such that the user data is transmitted through a corresponding band group;
• a segment allocator for, under the control of the controller, allocating segment bands of the band groups allocated such that the user data for each of the subscriber stations is transmitted;
• and
• a radio frequency (RF) processor for RF-processing a signal of the segment-allocated band groups and transmitting the RF-processed signal.