DSP complexity of mode-division multiplexed receivers

被引：99

作者：

Inan, Beril ^{[1
]}

Spinnler, Bernhard ^{[2
]}

Ferreira, Filipe ^{[3
]}

van den Borne, Dirk ^{[2
]}

Lobato, Adriana ^{[4
]}

Adhikari, Susmita ^{[5
]}

Sleiffer, Vincent A. J. M. ^{[6
]}

Kuschnerov, Maxim ^{[2
]}

Hanik, Norbert ^{[1
]}

Jansen, Sander L. ^{[2
]}

机构：

[1] Tech Univ Munich, Inst Commun Engn, D-80333 Munich, Germany

[2] Nokia Siemens Networks GmbH & Co KG, Munich, Germany

[3] Nokia Siemens Networks Portugal SA, P-2720093 Amadora, Portugal

[4] Univ Fed Armed Forces, D-85577 Munich, Neubiberg, Germany

[5] Univ Kiel, Chair Commun, Kiel, Germany

[6] Eindhoven Univ Technol, Dept Elect Engn, COBRA Inst, NL-5600 MB Eindhoven, Netherlands

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 10期

关键词：

TRANSMISSION;

D O I：

10.1364/OE.20.010859

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The complexities of common equalizer schemes are analytically analyzed in this paper in terms of complex multiplications per bit. Based on this approach we compare the complexity of mode-division multiplexed digital signal processing algorithms with different numbers of multiplexed modes in terms of modal dispersion and distance. It is found that training symbol based equalizers have significantly lower complexity compared to blind approaches for long-haul transmission. Among the training symbol based schemes, OFDM requires the lowest complexity for crosstalk compensation in a mode-division multiplexed receiver. The main challenge for training symbol based schemes is the additional overhead required to compensate modal crosstalk, which increases the data rate. In order to achieve 2000 km transmission, the effective modal dispersion must therefore be below 6 ps/km when the OFDM specific overhead is limited to 10%. It is concluded that for few mode transmission systems the reduction of modal delay is crucial to enable long-haul performance. (C) 2012 Optical Society of America

引用

页码：10859 / 10869

页数：11

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