Robustness of IFDMA as Air Interface Candidate for Future High Rate Mobile Radio Systems

被引：9

作者：

Frank, T. ^{[1
]}

Klein, A. ^{[1
]}

Costa, E. ^{[2
]}

Schulz, E. ^{[2
]}

机构：

[1] Tech Univ Darmstadt, Inst Nachrichtentech, Merckstr 25, D-64283 Darmstadt, Germany

[2] Siemens AG, D-81541 Munich, Germany

来源：

ADVANCES IN RADIO SCIENCE | 2005年 / 3卷

关键词：

D O I：

10.5194/ars-3-265-2005

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：

The Interleaved Frequency Division Multiple Access (IFDMA) scheme is a candidate for next generation mobile radio systems. IFDMA is based on compression, repetition and subsequent user dependent frequency shift of a modulated signal. As in OFDMA, multiple access is enabled by the assignment of overlapping but mutually orthogonal subcarriers to each user. It provides various advantages such as low peak to average power ratio, orthogonality of the signals of different users even for transmission over a time dispersive channel and low complexity. However, IFDMA is sensitive to frequency offsets. In this paper, a derivation of IFDMA based on a generalised OFDMA signal model with specific precoding and specific subcarrier allocation is presented. Moreover, simulation results showing the robustness properties of IFDMA against frequency errors are given.

引用

页码：265 / 270

页数：6

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