Patent ID: 8503505

Claim:
An apparatus for transmitting data in a communication system, comprising: a first generator configured to generate main service data of broadcasting data; a second generator configured to generate additional data of the broadcasting data; a transformer configured to transform the addition data into a parallel type; a sequence generator configured to generate pseudo-random noise sequences as a spreading code of the additional data; a selector configured to select polarities of the pseudo-random noise sequences using any one additional data bits in the additional data in the transformed parallel type; a sequence mapper configured to map the remaining additional data bits excluding the one additional data bit from the additional data in the transformed parallel type to a single sequence; a multiplier configured to multiply a single sequence to which the remaining additional data bits are mapped by pseudo-noise sequences of which the polarities are selected; a controller configured to control mean power of the additional data multiplied by the sequences; a coupler configured to couple the additional data of which the mean power is controlled with the main service data as the broadcasting data; and a transmitter configured to transmit the broadcasting data.