Method for transmitting pilot for multiple carrier system

A method of transmitting pilot signals in a system which performs communication using two or more carriers, the method comprising:

• transmitting first pilots and second pilots from at least one user equipment to a base station, the first and second pilots transmitted from the at least one user equipment being multiplexed by frequency division multiplexing, and the first and second pilots on a frequency axis by the frequency division multiplexing having different arrangement intervals;
• and
• transmitting data from the at least one user equipment to the base station in accordance with the first pilots and the second pilots.

A method of transmitting pilot signals in a system which performs communication using two or more carriers, the method comprising:

• transmitting first pilots and second pilots from at least one user equipment to a base station, the first and second pilots transmitted from the at least one user equipment being multiplexed by frequency division multiplexing and being multiplexed by allocated codes within each frequency;
• and
• transmitting data from the at least one user equipment to the base station in accordance with the first pilots and the second pilots.

A method of transmitting pilot signals in a system which performs communication using two or more carriers, the method comprising:

• transmitting first pilots and second pilots from at least one user equipment to a base station, the first and second pilots transmitted from the at least one user equipment being transmitted using period and offset based on a certain time period;
• and
• transmitting data from the at least one user equipment to the base station in accordance with the first pilots and the second pilots.

A method of transmitting pilot signals in a system which performs communication using two or more carriers, the method comprising:

• transmitting first pilots and second pilots from a user equipment to a base station using at least one transmission block included in one sub-frame, the second pilots being additionally provided to the transmission block for transmission of the first pilots if data are transmitted during sub-frame where the first pilots are transmitted;
• and
• transmitting data from the user equipment to the base station in accordance with the first pilots and the second pilots.

A method of transmitting pilot signals in a system which performs communication using two or more carriers, the method comprising:

• transmitting first pilots and second pilots from a user equipment to a base station using at least one transmission block included in one sub-frame, the second pilots being transmitted using a reserved radio source if the first pilots and the second pilots are transmitted during one sub-frame;
• and
• transmitting data from the user equipment to the base station in accordance with the first pilots and the second pilots.

A method of transmitting pilot signals in a system which performs communication using two or more carriers, the method comprising:

• transmitting first pilots and second pilots from two or more user equipments to a base station using at least one transmission block included in one sub-frame, and if the two or more user equipments transmit the first pilots within one sub-frame, allocating a radio resource for transmission of the pilots in accordance with a transmission timing point of the pilots;
• and
• transmitting data to the base station depending on the first pilots and the second pilots using the allocated radio resource.