Deng Liao and Dongyu Qiu and Ahmed K. Elhakeem
Coding based Synchronization Algorithm for Secondary Synchronization Channel in WCDMA
2114 - 2122
2009
3
11
International Journal of Electrical and Computer Engineering
https://publications.waset.org/pdf/3363
https://publications.waset.org/vol/35
World Academy of Science, Engineering and Technology
A new code synchronization algorithm is proposed in
this paper for the secondary cellsearch stage in wideband CDMA
systems. Rather than using the Cyclically Permutable (CP) code in the
Secondary Synchronization Channel (SSCH) to simultaneously
determine the frame boundary and scrambling code group, the new
synchronization algorithm implements the same function with less
system complexity and less Mean Acquisition Time (MAT). The
Secondary Synchronization Code (SSC) is redesigned by splitting into
two subsequences. We treat the information of scrambling code group
as data bits and use simple time diversity BCH coding for further
reliability. It avoids involved and timecostly ReedSolomon (RS)
code computations and comparisons. Analysis and simulation results
show that the Synchronization Error Rate (SER) yielded by the new
algorithm in Rayleigh fading channels is close to that of the
conventional algorithm in the standard. This new synchronization
algorithm reduces system complexities, shortens the average
cellsearch time and can be implemented in the slotbased cellsearch
pipeline. By taking antenna diversity and pipelining correlation
processes, the new algorithm also shows its flexible application in
multiple antenna systems.
Open Science Index 35, 2009