Reception apparatus, reception method, transmission apparatus, and transmission method

A reception apparatus, comprising:

• a processing unit configured to:
• process, when a transmission signal including transmission data is received, the transmission signal including a pilot signal on which LDM has been performed, and
• demodulate a part of the transmission data included in a second layer which is different from a first layer including the pilot signal, wherein
• a core layer of the LDM includes the pilot signal,
• an enhanced layer of the LDM includes a part of the transmission data,
• the transmission signal includes a broadcast signal multiplexed by time division multiplexing (TDM),
• a layer divided in a time direction includes a first tier and a second tier on which different modulation methods have been performed, and
• the pilot signal is included in one tier of the first tier and the second tier on which a more robust modulation method has been performed.

A reception method of a reception apparatus, wherein

• the reception apparatus, when a transmission signal including transmission data is received, processes the transmission signal including a pilot signal on which LDM has been performed, and demodulates a part of the transmission data included in a second layer which is different from a first layer including the pilot signal,
• a core layer of the LDM includes the pilot signal,
• an enhanced layer of the LDM includes a part of the transmission data,
• the transmission signal includes a broadcast signal multiplexed by FDM,
• a layer divided in a frequency direction includes a first tier and a second tier on which different modulation methods have been performed, and
• the pilot signal is included in one tier of the first tier and the second tier on which a more robust modulation method has been performed.

A transmission apparatus, comprising:

• a processing unit configured to:
• process, when a transmission signal including transmission data is transmitted, the transmission signal including a pilot signal on which LDM has been performed, and
• modulate a part of the transmission data included in a second layer which is different from a first layer including the pilot signal, wherein
• a core layer of the LDM includes the pilot signal,
• an enhanced layer of the LDM includes a part of the transmission data,
• the transmission signal includes a broadcast signal multiplexed by FDM,
• a layer divided in a frequency direction includes a first tier and a second tier on which different modulation methods have been performed, and
• the pilot signal is included in one tier of the first tier and the second tier on which a more robust modulation method has been performed.

A transmission apparatus, comprising:

• a processing unit configured to:
• when a transmission signal including transmission data is transmitted, the transmission signal including a pilot signal on which LDM has been performed, and
• modulate a part of the transmission data included in a second layer which is different from a first layer including the pilot signal, wherein
• a core layer of the LDM includes the pilot signal,
• an enhanced layer of the LDM includes a part of the transmission data,
• the transmission signal includes a broadcast signal multiplexed by TDM,
• a layer divided in a time direction includes a first tier and a second tier on which different modulation methods have been performed, and
• the pilot signal is included in one tier of the first tier and the second tier on which a more robust modulation method has been performed.

A transmission method of a transmission apparatus, wherein

• the transmission apparatus, when a transmission signal including transmission data is transmitted, processes the transmission signal including a pilot signal on which LDM has been performed, and modulates a part of the transmission data included in a second layer which is different from a first layer including the pilot signal,
• a core layer of the LDM includes the pilot signal,
• an enhanced layer of the LDM includes a part of the transmission data,
• the transmission signal includes a broadcast signal multiplexed by FDM,
• a layer divided in a frequency direction includes a first tier and a second tier on which different modulation methods have been performed, and
• the pilot signal is included in one tier of the first tier and the second tier on which a more robust modulation method has been performed.