The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2018
Filed:
Dec. 21, 2016
Zte Corporation, Shenzhen, CN;
Jianjun Yu, Basking Ridge, NJ (US);
Yuanquan Wang, Morristown, NJ (US);
Xin Xiao, Morristown, NJ (US);
ZTE Corporation, Shenzhen, CN;
Abstract
Techniques for receiving a modulated optical signal which has undergone a digital Fourier transform spreading (DFTS), include generating digital samples of the modulated optical signal, performing resampling and synchronization of the digital samples to generate time-corrected digital samples from an input wireless signal, compensating the time-corrected digital samples for nonlinearity (NL) to produce NL-compensated digital samples, de-spreading the NL-compensated digital samples using an inverse digital Fourier transform to recover quadrature amplitude modulation (QAM) modulated signals, applying post-equalization to the QAM signals to generate equalized QAM signals, performing a decision directed least mean square (DD-LMS) equalization to generate blind-optimized QAM signals and demodulating the blind-optimized QAM signals to recover data bits.