Apparatus and method for synchronization acquisition and cell ID search in wireless communication system

A method for acquiring the synchronization and cell ID of a mobile station (MS) in a wireless communication system, comprising:

• receiving a signal and extracting a portion of the received signal, performing a correlation operation on the portion of the received signal and a binary time-domain preamble sequence predetermined for synchronization acquisition;
• detecting a peak value of the correlation operation result to acquire synchronization;
• performing a Fast Fourier Transform (FFT) operation on a preamble sequence with an FFT size from the peak value detection point to transform the preamble sequence into a frequency-domain preamble sequence;
• extracting a portion of the frequency-domain preamble sequence,
• performing a correlation operation on the portion of the frequency-domain preamble sequence and the binary frequency-domain preamble sequence predetermined for cell ID search;
• and
• detecting a peak value of the correlation operation result on the binary frequency-domain preamble sequence to acquire a cell ID.

An apparatus for acquiring the synchronization and cell ID of a mobile station (MS) in a wireless communication system, comprising:

• a Radio Frequency (RF) receiver receiving a signal;
• a synchronization acquirer extracting a portion of the received signal, which has the same size as a binary time-domain preamble sequence predetermined for synchronization acquisition, performing a correlation operation on the portion of the received signal and the binary time-domain preamble sequence predetermined for synchronization acquisition, and detecting a peak value of the correlation operation result to acquire synchronization;
• a Fast Fourier Transform (FFT) operator performing an FFT operation on a preamble sequence with an FFT size from the peak value detection point to transform the preamble sequence into a frequency-domain preamble sequence;
• and
• a cell ID acquirer extracting a portion of the frequency-domain preamble sequence, which has the same size as a binary frequency-domain preamble sequence predetermined for cell ID search, performing a correlation operation on the portion of the frequency-domain preamble sequence and the binary frequency-domain preamble sequence predetermined for cell ID search, and detecting a peak value of the correlation operation result on the binary frequency-domain preamble sequence to acquire a cell ID.