Patent ID: 7936805

Claim:
A transmitter comprising: a channel encoder configured to output a bit stream of encoded information data; a symbol mapper configured to output a symbol stream obtained by constellating the bit stream; a frequency allocation and hopping part configured to determine a frequency to be allocated to the symbol stream; and a multi-carrier modulator configured to load and output the symbol stream output from the frequency allocation and hopping part on a multi-carrier, wherein the frequency allocation and hopping part comprises a logical frequency mapping part configured to determine a frequency capable of optimally averaging adjacent cell interference, and a physical frequency mapping part configured to map the determined frequency from the a logical frequency mapping part one-to-one and determining a frequency, wherein the logical frequency mapping part performs mapping according to the following Equation: L ij k =(k×i+j) mod J, and the physical frequency mapping part performs mapping according to the following Equation: f ij k = M k ⁡ ( L ij k ) = { ( k + 1 ) × L ij k ⁡ ( mod ⁢ ⁢ J ) if ⁢ ⁢ k < J - 1 r × L ij k ⁡ ( mod ⁢ ⁢ J ) if ⁢ ⁢ k = J - 1 , r ⁢ ⁢ is ⁢ ⁢ predetermined natural ⁢ ⁢ number where, k: number of carrier groups existing during one frequency allocation period, J: number of carriers included in one carrier group, and f ij k : carrier allocated to a j th channel (user) in a k th carrier group of an i th cell.