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:
Sep. 03, 2019
Filed:
Dec. 13, 2016
Applicant:
Orange, Paris, FR;
Inventors:
Assignee:
ORANGE, Pairs, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 25/03 (2006.01); H04L 27/26 (2006.01);
U.S. Cl.
CPC ...
H04L 25/03821 (2013.01); H04L 25/03343 (2013.01); H04L 27/2634 (2013.01); H04L 27/2698 (2013.01);
Abstract
The invention relates to precoding (or rather pre-equalization) for a faster-than-Nyquist OFDM or OFDM/OQAM type transmitter. Compression of faster-than-Nyquist OFDM pulses over time introduces an inter-symbol interference (ISI) and a sub-carrier interference (ICI). Assuming a Gaussian-type channel (AWGN), the ISI and ICI can be estimated at the transmitter and, in this way, some of the symbols (at most half) can be precoded (according to the value of the adjacent symbols), such as to cancel the ISI and ICI introduced during transmission and reception.