Method for transmitting synchronization signal using codebook in wireless communication system

A base station transmitting a synchronization signal via an antenna array in a wireless communication system, the base station comprising:

• a transmitting unit;
• a receiving unit;
• and
• a processor configured to operate in a manner of being connected with the transmitting unit and the receiving unit,
• wherein the processor configured to:
• generate a codebook configured by second precoders, which is defined by concatenation of a plurality of first precoders corresponding to each of a plurality of antenna subarrays,
• generate a synchronization sequence by multiplying the same reference sequence, which is inputted over a plurality of time slots, by a weight for each of the plurality of the antenna subarrays,
• generate a synchronization signal for the plurality of the antenna subarrays by applying the second precoder to the generated synchronization sequence, and
• repeatedly transmit the synchronization signal defined in the plurality of the time slots via the plurality of the antenna subarrays,
• wherein the reference sequence is different according to the plurality of the antenna subarrays, and
• wherein a combination between the reference sequence and the weight indicates additional information transmitted to a user equipment.