Joint timing and frequency synchronization based on weighted CAZAC sequences for reduced-guard-interval CO-OFDM systems

Omomukuyo, Oluyemi and Chang, Deyuan and Zhu, Jingwen and Dobre, Octavia A. and Venkatesan, Ramachandran and Ngatched, Telex and Rumbolt, Chuck (2015) Joint timing and frequency synchronization based on weighted CAZAC sequences for reduced-guard-interval CO-OFDM systems. Optics Express, 23 (5). pp. 5777-5788. ISSN 1094-4087 (Unpublished)

[img] [English] PDF - Published Version
Available under License Creative Commons Attribution Non-commercial.

Download (1532Kb)

Abstract

A novel joint symbol timing and carrier frequency offset (CFO) estimation algorithm is proposed for reduced-guard-interval coherent optical orthogonal frequency-division multiplexing (RGI-CO-OFDM) systems. The proposed algorithm is based on a constant amplitude zero autocorrelation (CAZAC) sequence weighted by a pseudo-random noise (PN) sequence. The symbol timing is accomplished by using only one training symbol of two identical halves, with the weighting applied to the second half. The special structure of the training symbol is also utilized in estimating the CFO. The performance of the proposed algorithm is demonstrated by means of numerical simulations in a 115.8-Gb/s 16-QAM RGI-CO-OFDM system.

Item Type: Article
URI: http://research.library.mun.ca/id/eprint/11792
Item ID: 11792
Additional Information: Memorial University Open Access Author's Fund
Department(s): Engineering and Applied Science, Faculty of
Date: 9 March 2015
Date Type: Publication
Related URLs:

Actions (login required)

View Item View Item

Downloads

Downloads per month over the past year

View more statistics