| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4957050 | Optical Fiber Technology | 2017 | 6 Pages |
Abstract
In this paper, we explored the performance of space-time block-coding (STBC) assisted multiple-input multiple-output (MIMO) scheme for modal dispersion and mode-dependent loss (MDL) mitigation in spatial-division multiplexed optical communication systems, whereas the weight matrices of frequency-domain equalization (FDE) were updated heuristically using decision-directed recursive least squares (RLS) algorithm for convergence and channel estimation. The proposed STBC-RLS algorithm can achieve 43.6% enhancement on convergence rate over conventional least mean squares (LMS) for quadrature phase-shift keying (QPSK) signals with merely 16.2% increase in hardware complexity. The overall optical signal to noise ratio (OSNR) tolerance can be improved via STBC by approximately 3.1, 4.9, 7.8Â dB for QPSK, 16-quadrature amplitude modulation (QAM) and 64-QAM with respective bit-error-rates (BER) and minimum-mean-square-error (MMSE).
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Yi Weng, Xuan He, Wang Yao, Michelle C. Pacheco, Junyi Wang, Zhongqi Pan,