Data transmitting and receiving method using phase shift based precoding and transceiver supporting the same

A transceiver for transmitting data to a reception end device in a Multi-Input Multi-Output (MIMO) system, the transceiver comprising:

• a precoding module for precoding data by multiplying a phase-shift-based precoding matrix to a data matrix representing the data;
• and
• multiple antennas for transmitting the precoded data to the reception end device,
• wherein the phase-shift-based precoding matrix has a form of multiplication of a precoding matrix (P), a diagonal matrix (D) and an unitary matrix (U),
• wherein the precoding matrix is cyclically selected from a codebook having (Nc) precoding matrixes using a modulo operation,
• wherein the modulo operation is defined by using a resource index (k) and the (Nc).

A method for receiving data at a reception end device in a Multi-Input Multi-Output (MIMO) system from a transmission end device, the method comprising:

• receiving precoded data from the transmission end device having multiple antennas;
• and
• performing opposite function for precoding data at the transmission end device using a phase-shifted-based precoding matrix for each of resource indexes (k),
• wherein the phase-shift-based precoding matrix has a form of multiplication of a precoding matrix (P), a diagonal matrix (D) and an unitary matrix (U),
• wherein the precoding matrix is cyclically selected from a codebook having (Nc) precoding matrixes using a modulo operation,
• wherein the modulo operation is defined by using the resource index (k) and the (Nc).

A transceiver for receiving data from a transmission end device in a Multi-Input Multi-Output (MIMO) system, the transceiver comprising:

• one or more antennas for receiving precoded data from the transmission end device having multiple antennas;
• and
• a MIMO decoder for performing opposite function for precoding data at the transmission end device using a phase-shifted-based precoding matrix for each of resource indexes (k),
• wherein the phase-shift-based precoding matrix has a form of multiplication of a precoding matrix (P), a diagonal matrix (D) and an unitary matrix (U),
• wherein the precoding matrix is cyclically selected from a codebook having (Nc) precoding matrixes using a modulo operation,
• wherein the modulo operation is defined by using the resource index (k) and the (Nc).