Performance Comparison on Schemes for Suppressing Cross-Slot Interference in TD-SCDMA System

Author

Wang, Xianwen ; Song, Tiecheng ; Xu, Bo

Author_Institution

Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

Slow dynamic channel allocation (Slow DCA) is a key technology used to support asymmetrical services between uplink and downlink in TD-SCDMA system, which may cause cross-slot interference when a cell is active in downlink slot while an adjacent one is in uplink slot. The crossed slot existing among adjacent cells will seriously affect the system performance. In this paper, we give a brief analysis about how the cross-slot interference emerges and how it influences TDSCDMA system. Three schemes commonly used to suppress this interference are introduced. One is based on slots allocation direction, and the other two are separately based on region division in a cell and "virtual cell". Performances of each scheme are compared in an OPNET simulation scenario. Results show that the scheme based on "virtual cell" has a better performance compared with the other two schemes and it is proved to be the most practical one in the three schemes for solving the cross-slot problem.

Keywords

3G mobile communication; channel allocation; code division multiple access; interference suppression; radiofrequency interference; time division multiple access; 3G mobile communication system; TD-SCDMA system; asymmetrical service; cross-slot interference suppression; downlink slot; slot allocation direction; slow dynamic channel allocation; time-division-synchronous code-division multiple access; uplink slot; virtual cell; 3G mobile communication; Communication switching; Downlink; Interference suppression; Laboratories; Mobile communication; Resource management; Switches; System performance; Time division synchronous code division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5302852

Filename

5302852