Block-Diagonal MIMO Equalization for Polarization-Multiplexed OFDM Transmission With Direct Detection

被引：3

作者：

Cvijetic, Neda ^{[1
]}

Prasad, Narayan ^{[1
]}

Qian, Dayou ^{[1
]}

Wang, Ting ^{[1
]}

机构：

[1] NEC Labs Amer, Princeton, NJ 08540 USA

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2011年 / 23卷 / 12期

关键词：

Digital signal processing (DSP); multiple-input-multiple-output (MIMO); orthogonal frequency-division multiplexing (OFDM); polarization multiplexing;

D O I：

10.1109/LPT.2011.2131642

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 propose a novel digital signal processing (DSP)-based multiple-input-multiple-output (MIMO) equalization algorithm set for polarization-multiplexed orthogonal frequency-division multiplexing transmission with direct detection (POLMUX-OFDM-DD), based on block-diagonal matrix processing. The new methodology significantly reduces legacy zero forcing (ZF)-based equalization complexity, and enables performance gains via efficient minimum mean square error (MMSE) and maximum likelihood (ML) detection. The new block-diagonal MMSE and ML algorithms are experimentally shown to extend transmission distance from 870 to 900 km and beyond 960 km, respectively, in 20-Gb/s standard single-mode fiber (SSMF) POLMUX OFDM quadrature-phase-shift-keying (QPSK)-DD transmission. The new algorithms are highly attractive for future cost-efficient, DSP-based optical metro/access systems.

引用

页码：792 / 794

页数：3

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