Improving the Phase Noise Tolerance of Subbanded DFT-Spread OFDM by Nonredundant Interleaving

Author

Shalom, Aviv ; Tselniker, Igor ; Nazarathy, Moshe

Author_Institution

Dept. of Electr. Eng., Technion - Israel Inst. of Technol., Haifa, Israel

Volume

32

Issue

21

fYear

2014

fDate

Nov.1, 1 2014

Firstpage

4119

Lastpage

4132

Abstract

DFT-Spread (DFT-S) OFDM is a variant of OFDM with multiple advantages, however, one disadvantage is its degraded phase noise tolerance, due to sampling rate slow-down in each DFT-S subband. Here, we propose a phase recovery method for 16-QAM coherent transmission, based on the combination of nonredundant (de)interleaving, differential precoding, and multisymbol delay detection (MSDD), applicable to either conventional DFT-S OFDM receivers or to filter-bank subbanded DFT-S OFDM receivers. Laser and nonlinear phase noise tolerances are significantly improved, as simulated for a filter-bank-based subbanded DFT-S OFDM receiver for 16-QAM over 1000 km SMF.

Keywords

OFDM modulation; channel bank filters; discrete Fourier transforms; phase noise; precoding; quadrature amplitude modulation; 16-QAM coherent transmission; DFT-S receivers; MSDD; differential precoding; filter-bank receivers; laser tolerances; multisymbol delay detection; nonlinear phase noise tolerances; nonredundant deinterleaving; nonredundant interleaving; phase recovery method; sampling rate; subbanded DFT-spread OFDM; Arrays; Discrete Fourier transforms; Filter banks; Laser noise; OFDM; Phase noise; Receivers; DFT-Spread OFDM; Multi-symbol delay detection (MSDD); OFDM; multisymbol phase estimation (MSPE); optically coherent detection; phase estimation; phase recovery;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2346990

Filename

6876138