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:
Jun. 19, 2018
Filed:
Nov. 02, 2016
Mrinmoy Jana, Vancouver, CA;
Jeebak Mitra, Ottawa, CA;
Lutz Hans-joachim Lampe, Vancouver, CA;
Ahmed Mohamed Ibrahim Medra, Vancouver, CA;
Mrinmoy Jana, Vancouver, CA;
Jeebak Mitra, Ottawa, CA;
Lutz Hans-Joachim Lampe, Vancouver, CA;
Ahmed Mohamed Ibrahim Medra, Vancouver, CA;
HUAWEI TECHNOLOGIES CANADA CO., LTD., Kanata, CA;
Abstract
Systems and methods of precoded faster than Nyquist (FTN) signalling are provided. In the transmitter, Tomlinson-Harashima Preceding (THP) is applied to produce precoded symbols. The THP is based on inter-symbol interference (ISI) due to using faster than Nyquist (FTN) signalling. An inverse modulo operation is not performed in the receiver. Instead, in the receiver, FTN processing is performed based on a matched filter output by determining log a-posteriori probability ratio LAPPR values computed for an nbit bof a kreceived symbol and pre-computed a-priori probabilities of an extended constellation for a given pulse shape h(t) and FTN acceleration factor combination.