Transmitting apparatus, receiving apparatus, and control methods thereof

A receiving apparatus comprising:

• a receiver configured to receive a frame transmitted from a transmitting apparatus;
• a demodulator configured to demodulate the frame;
• and
• a decoder configured to the demodulated frame,
• wherein the frame comprises a bootstrap, a preamble and a payload
• wherein the bootstrap comprises a symbol used for an initial channel estimation in the receiving apparatus,
• wherein the preamble comprises first signaling information and second signaling information,
• wherein the payload comprises at least one sub frame,
• wherein the first signaling information comprises information required to decode the second signaling information and information required for an initial orthogonal frequency division multiplexing (OFDM) processing of a first sub frame among the at least one sub frame,
• wherein the second signaling information comprises information for a configuration of the at least one sub frame, and
• wherein the first signaling information is used in the receiver to facilitate the initial OFDM processing of the first sub frame without waiting for decoding of the second signaling information.