Devices and methods for orthogonal frequency division multiplexing signal phase shaping

摘要

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 includes receiving an incoming data signal via a processor of a transmitter. The method 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.

主权项

1. A method, comprising: receiving an incoming data signal via a processor of a transmitter, wherein the data signal comprises an in-phase (I) component and a quadrature (Q) component; 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 at least in part on the one or more roots; deriving a periodicity of the phase component based at least in part on the second function; and adjusting a value of a slope of the phase component based at least in part on the periodicity of the phase component, wherein adjusting the value of the slope comprises reducing or substantially eliminating an error of the phase component; recombining an amplitude component and the phase component into a polar coordinate transmission signal following the adjustment of the value of the slope; and transmitting the polar coordinate transmission signal via the transmitter.