A time and frequency synchronization scheme for multiuser OFDM

被引：284

作者：

van de Beek, JJ ^{[1
]}

Börjesson, PO

Boucheret, ML

Landström, D

Arenas, JM

Ödling, P

Östberg, C

Wahlqvist, M

Wilson, SK

机构：

[1] Nokia Svenska AB, SE-16425 Stockholm, Sweden

[2] Univ Lund, Dept Appl Elect, SE-22100 Lund, Sweden

[3] Ecole Natl Super Telecommun, F-4004 Toulouse, France

[4] Ericsson Radio Syst AB, SE-16480 Stockholm, Sweden

[5] Ericsson Mobile Commun AB, SE-22183 Lund, Sweden

[6] Lulea Univ Technol, Div Signal Proc, SE-97187 Lulea, Sweden

来源：

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 1999年 / 17卷 / 11期

关键词：

communication system; delay estimation; frequency estimation; multicarrier; multiuser system; orthogonal frequency division multiplexing (OFDM); synchronization; universal mobile telecommunication system (UMTS);

D O I：

10.1109/49.806820

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present a multiuser synchronization scheme for tracking the mobile's uplink time and frequency offsets. It uses the redundancy introduced by the cyclic prefix and does not need additional pilots. We show performance results of an orthogonal frequency division multiplexing (OFDM)-based radio interface based on universal mobile telecommunication system (UMTS) parameters. For a UMTS-typical mobile channel environment, the performance of a coherent system employing the scheme is virtually indistinguishable from the performance of a perfectly synchronized system, In a differentially modulated system, synchronization errors decrease the system performance by about 0.7 dB compared to a perfectly synchronized system.

引用

页码：1900 / 1914

页数：15

共 27 条

[1] MULTICARRIER MODULATION FOR DATA-TRANSMISSION - AN IDEA WHOSE TIME HAS COME [J].