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A Study on a Cell search Using PCSSCG in Broadband OFCDM Systems  

Kim Dae-Yong (Information & Communication of Engineering Yeungnam University)
Choi Kwon-Hue (Information & Communication of Engineering Yeungnam University)
Park Yong-Wan (Information & Communication of Engineering Yeungnam University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.43, no.6, 2006 , pp. 1-8 More about this Journal
Abstract
In the asynchrous OFCDM(Orthogonal Frequency and Code Division Multiplexing) system, a three-step cell search algorithm is performed for the initial synchronization in the following three steps: OFCDM symbol timing, i.e., Fast Fourier Transform(FFT) window timing is estimated employing guard interval (GI) correlation in the first step, then the frame timing and CSSC (Cell Specific Scrambling Code) group is detected by taking the correlation of the CPICH(Common Pilot Channel) based on the property yeilded by shifting the CSSC phase in the frequency domain. Finally, the CSSC phase within the group is identified in the third step. This paper proposes a modification code(PCSSCG:Patial Cell Specific Scrambling Code Group) of the conventional CPICH based cell search algorithm in the second step which offers MS(Mobile Station) complexity reductions with the nearly same performance. The proposed method is to be compared and verified through the computer simulation.
Keywords
cell search; OFCDM; MC-CDMA; complexity; synchronization;
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