[KSCI] Korea Science Citation Index Service

A Suitable Cell Search Algorithm Using Separated I/Q Channel Cell Specific Scrambling Codes for Systems with Coexisting Cellular and Hot-Spot Cells in Broadband OFCDM Systems

Kim Dae-Yong (영남대학교 정보통신공학과)
Kwon Hyeog-Soong (밀양대학교 정보통신공학과)

Publication Information

Journal of the Korea Institute of Information and Communication Engineering / v.9, no.8, 2005 , pp. 1649-1655 More about this Journal

Abstract

For systems with coexisting cellular and hot-spot cells in broadband orhogonal frequency and code division multiplexing (OFCDM) systems, a suitable cell search algorithm is proposed fur the common pilot channel (CPICH) in the forward link using separated I/Q channel cell specific codes(CSSC), in which the cellular cell specific scrambling code (CCSSC) is assigned to the in-phase (Q) pilot channel of all cellular cells, and the exclusive hot-spot cell specific scrambling code (HSCSSC) group is assigned to the quadrature (Q) pilot channel of all hot-spot cells. Therefore, the proposed algorithm enables a mobile station (MS) to search quickly for the most desirable hot-spot cell due to reducing the effect of CCSSC, when a MS wants to use a mobile internet. The computer simulation results show that the proposed cell search algorithm can achieve faster cell search time performance, compared to conventional cell search methods.

Keywords

OFCDM; cell search; hot-spot; I/Q;

Citations & Related Records

Reference

1	H. Atarashi, S. Abeta, M. Sawahashi, 'Variable spreading factor-orthogonal frequency and code division multiplexing (VSF-OFCDM) for broadband packet wireless access', IEICE trans. commu., vol. e86-b, no. 1, Jan. 2003
2	M. Tanno, H. Atarashi, K. Higuchi, and M. Sawahashi, 'Three-step fast cell search algorithm utilizing common pilot channel for OFCDM broadband packet wireless access', IEEE VTC2002-Fall, vol. 3,1575 - 1579, Sept. 2002
3	M. Tanno, H. Atarashi, K. Higuchi, and M. Sawahashi, 'Fast cell search algorithm for system with coexisting cellular and hot-spot cells suitable for OFCDM forward link broadband wireless access' IEEE VTC 2003-Spring, vol. 1,pp. 133-138, April 2003
4	Y. Ishii, K. Higuchi, M. Sawahashi, 'Three-step cell search algorithm employing synchronization and common pilot channels for OFCDM broadband wireless access', IEICE trans. vol. e85-b, no. 12, dec. 2002
5	Dong In Kim and Yu Ro Lee, 'I/Q multiplexed code assignment for fast cell search in asynchronous DS/CDMA cellular systems', IEEE Communications Letters, vol. 2,159 - 161, Jun. 1998 DOI ScienceOn