البحث في مجموعات البراءات الوطنية والدولية

1. (WO2016099684) DEVICES AND METHODS FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SIGNAL PHASE SHAPING

Pub. No.:    WO/2016/099684    International Application No.:    PCT/US2015/059001
Publication Date: 23/06/2016 International Filing Date: 04/11/2015
IPC: H04L 27/36
H04L 27/26
Applicants: APPLE INC.
Inventors: AGON, Zohar
Title: DEVICES AND METHODS FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING SIGNAL PHASE SHAPING
Abstract:
Methods and devices for "shaping" a slope of the phase component of OFDM data symbols in order to decrease an accumulation of phase error are provided. By way of example, a method 100 includes receiving an incoming data signal via a processor 12 of a transmitter 28. The method 100 further includes computing one or more roots of a first function representing a phase component of the data signal, computing a second function representing the phase component based on the one or more roots, deriving a periodicity of the phase component based on the second function, and deriving a value of a slope of the phase component based at least in part on the periodicity of the phase component to reduce or eliminate an error of the phase component.