Signal transmission/reception apparatus and method to minimize inter-cell interference in a communication system

An apparatus to transmit a signal of a base station (BS) in a communication system, the apparatus comprising:

• a repetitive information generator to generate repetitive information by repeating information a number of times;
• a subcarrier allocator to allocate a subcarrier for transmitting the repetitive information using a subcarrier allocation scheme that all BSs included in the communication system use in a same way;
• and
• a transmitter to transmit the repetitive information using the allocated subcarrier.

A method for receiving a signal in a mobile station (MS) of a communication system, the method comprising:

• when the communication system includes a serving base station (BS) and one interference BS, detecting R-times repeated information from a corresponding subcarrier of a signal received via K reception antennas;
• estimating a channel using the received signal;
• reassembling the detected information;
• and
• performing R×2×k Minimum Mean Square Error (MMSE) processing on the reassembled information using the channel-estimated value.

An apparatus to receive a signal in a mobile station (MS) of a communication system, the apparatus comprising:

• an information detector to, when the communication system includes a serving base station (BS) and one interference BS, detect R-times repeated information from a corresponding subcarrier of a signal received via K reception antennas;
• a channel estimator to estimate a channel using the received signal;
• an information reassembler to reassemble the detected information;
• and
• an Minimum Mean Square Error (MMSE) unit to perform R×2×k MMSE processing on the reassembled information using the channel-estimated value.