Transmission/reception apparatus and method for supporting mimo technology in a forward link of a high rate packet data system

A method for receiving data in a communication system with a plurality of antennas, the method comprising the steps of:

• identifying a first position in a time domain and a first position in a frequency domain corresponding to a position for data in the frequency domain, for a first pilot transmitted in every transmission time interval of the data;
• receiving the data and the first pilot at the identified first positions in the time domain and the frequency domain in the transmission time interval of the data;
• identifying second positions in the time domain and the frequency domain of a second pilot transmitted in a transmission time interval that is predefined by a transmitter and a receiver;
• and
• receiving the second pilot at the identified second positions in the time domain and the frequency domain in the transmission time interval that is predefined by the transmitter and the receiver.

A method for transmitting data in a communication system with a plurality of antennas, the method comprising the steps of:

• generating data and a first pilot;
• transmitting the first pilot at a first predetermined position in a time domain that is with the generated data, in every transmission time interval of the data;
• generating a second pilot;
• and
• transmitting the second pilot at secondary predetermined positions in the time domain and a frequency domain, in a transmission time interval that is predefined by a transmitter and a receiver.

A transmitter for transmitting data in a communication system with a plurality of antennas, the transmitter comprising:

• a pilot signal generator for generating a first pilot and a second pilot;
• a transmission unit for transmitting data, the first pilot and the second pilot over a wireless network;
• and
• a controller for controlling the transmission unit to transmit the first pilot at a first position in a frequency domain corresponding to a position for the data in the frequency domain and at a first position in a time domain that is with the data, in every transmission time interval of the data, and to transmit the second pilot at predetermined second positions in the time domain and the frequency domain in a transmission time interval that is predefined by a transmitter and a receiver.

A transmitter for transmitting data in a communication system with a plurality of antennas, the transmitter comprising:

• a pilot signal generator for generating a first pilot and a second pilot;
• a transmission unit for transmitting data, the first pilot and the second pilot over a wireless network;
• and
• a controller for controlling the transmission unit to transmit the first pilot at a predetermined first position in a time domain that is with the data, in every transmission time interval of the data, and to transmit the second pilot at predetermined secondary positions in the time domain and a frequency domain in a transmission time interval that is predefined by a transmitter and a receiver.