Synchronization of a TDMA-OFDM frequency hopping system

被引：0

作者：

van de Beek, JJ ^{[1
]}

Borjesson, PO ^{[1
]}

Boucheret, ML ^{[1
]}

Landstrom, D ^{[1
]}

Arenas, JM ^{[1
]}

Odling, P ^{[1
]}

Wilson, SK ^{[1
]}

Ostberg, C ^{[1
]}

Wahlqvist, M ^{[1
]}

机构：

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

来源：

48TH IEEE VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-3 | 1998年

关键词：

D O I：

暂无

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：

In this paper we present a Time Division Multiple Access - Orthogonal Frequency Division Multiplexing (TDMA-OFDM)-based radio interface proposal for the Universal Mobile Telecommunication System (UMTS). We focus on synchronization and present an implementable algorithm for the tracking of the mobiles' time and frequency offsets at the base station in the uplink. This algorithm is based on recently developed estimation methods that use redundancy introduced by the cyclic prefix. A modified Maximum Likelihood (ML) estimator for the Additative White Gaussian Noise (AWGN) channel is used to meet both implementational requirements and performance requirements for frequency-selective fading multiuser environments. Simulation results for a typical UMTS mobile channel environment show that the uncoded symbol error rate of a coherently modulated system using our synchronization scheme is virtually indistinguishable from that of a system with no time and frequency offset.

引用

页码：1290 / 1294

页数：5

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