First communication device configured to communicate with a second communication device, the first communication device comprising circuitry configured to - encode data words of an input bit stream to be transmitted to the second communication device into code words of an encoded bit stream; - allocate the bits of the encoded bit stream to two or more resource units assigned to the second communication device and covering different subsections of a channel bandwidth, wherein at least two of the two or more resource units cover subsections having a different number of tones, wherein a number of bits of the encoded bit stream allocated to a resource unit is proportional to the number of tones of the subsection covered by the resource unit, wherein the bits to be allocated to the two or more resource units are alternately allocated to the two or more resource units in a cycle having two or more alternations, wherein, for a first portion of the bits to be allocated to the two or more resource units in one cycle, a first ratio of predetermined numbers of consecutive bits alternately allocated to two resource units is based on the number of tones of subsections covered by said two resource units and the modulation order of a modulation of the bits allocated to the respective resource unit, and wherein, for a second portion of the bits to be allocated to the two or more resource units in one cycle, a second ratio of predetermined numbers of consecutive bits alternately allocated to two resource units is different from the first ratio, wherein the second ratio is formed by a remainder of bits that are not allocated to the two or more resource units as first portion of bits according to the first ratio, - groupwise map, per resource unit, bits of the encoded bit stream allocated to the respective resource unit to symbols of a constellation, and - assign the resource units to the respective subsection of the channel bandwidth in the frequency domain. - encode data words of an input bit stream to be transmitted to the second communication device into code words of an encoded bit stream; - allocate the bits of the encoded bit stream to two or more resource units assigned to the second communication device and covering different subsections of a channel bandwidth, wherein at least two of the two or more resource units cover subsections having a different number of tones, wherein a number of bits of the encoded bit stream allocated to a resource unit is proportional to the number of tones of the subsection covered by the resource unit, wherein the bits to be allocated to the two or more resource units are alternately allocated to the two or more resource units in a cycle having two or more alternations, wherein, for a first portion of the bits to be allocated to the two or more resource units in one cycle, a first ratio of predetermined numbers of consecutive bits alternately allocated to two resource units is based on the number of tones of subsections covered by said two resource units and the modulation order of a modulation of the bits allocated to the respective resource unit, and wherein, for a second portion of the bits to be allocated to the two or more resource units in one cycle, a second ratio of predetermined numbers of consecutive bits alternately allocated to two resource units is different from the first ratio, wherein the second ratio is formed by a remainder of bits that are not allocated to the two or more resource units as first portion of bits according to the first ratio, wherein at least two of the two or more resource units cover subsections having a different number of tones, wherein a number of bits of the encoded bit stream allocated to a resource unit is proportional to the number of tones of the subsection covered by the resource unit, wherein the bits to be allocated to the two or more resource units are alternately allocated to the two or more resource units in a cycle having two or more alternations, wherein, for a first portion of the bits to be allocated to the two or more resource units in one cycle, a first ratio of predetermined numbers of consecutive bits alternately allocated to two resource units is based on the number of tones of subsections covered by said two resource units and the modulation order of a modulation of the bits allocated to the respective resource unit, and wherein, for a second portion of the bits to be allocated to the two or more resource units in one cycle, a second ratio of predetermined numbers of consecutive bits alternately allocated to two resource units is different from the first ratio, wherein the second ratio is formed by a remainder of bits that are not allocated to the two or more resource units as first portion of bits according to the first ratio, - groupwise map, per resource unit, bits of the encoded bit stream allocated to the respective resource unit to symbols of a constellation, and - assign the resource units to the respective subsection of the channel bandwidth in the frequency domain.