An Investigation into Initial Ranging Method for Mobile OFDMA Systems

Author

Zeng, Jianqiang ; Minn, Hlaing

Author_Institution

Dept. of Electr. Eng., Univ. of Texas at Dallas, Dallas, TX

fYear

2008

fDate

28-30 April 2008

Firstpage

1

Lastpage

5

Abstract

This paper addresses initial ranging, which includes multiuser ranging code detection, multiuser timing offset estimation and multiuser power estimation at the base station for TDD OFDMA systems. By means of ranging signal design, our proposed ranging method overcomes the existing ranging method´s drawbacks namely high complexity, high sensitivity to channel frequency selectivity and time selectivity. Comparisons with the existing methods [1] [2] corroborate the advantages of our method in time-varying mobile environment.

Keywords

computational complexity; frequency division multiple access; mobile radio; time division multiplexing; TDD OFDMA systems; channel frequency selectivity; initial ranging method; mobile OFDMA systems; multiuser power estimation; multiuser ranging code detection; multiuser timing offset estimation; ranging signal design; time-varying mobile environment; Base stations; Contacts; Downlink; Frequency domain analysis; Frequency estimation; Frequency synchronization; Interference; OFDM; Signal design; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Sarnoff Symposium, 2008 IEEE

Conference_Location

Princeton, NJ

Print_ISBN

978-1-4244-1843-5

Type

conf

DOI

10.1109/SARNOF.2008.4520123

Filename

4520123