Patent ID: 8351520
Filing Date: 2013-01-08
Classification: H04L

Abstract:
1. A computer-implemented method for reducing peak-to-average power ratio (PAPR) of a transmitter's multi-carrier modulated signal having (i) a plurality of unreserved tones and (ii) one or more reserved tones reserved a priori for PAPR reduction, the method comprising: (a) assigning one or more data symbols to one or more unreserved tones, such that at least one other unreserved tone is a free tone having no data symbol assigned to it; (b) assigning one or more PAPR-reduction symbols to one or more free tones, and assigning one or more PAPR-reduction symbols to the one or more reserved tones; and (c) applying multi-carrier modulation to the one or more data symbols, the one or more free-tone PAPR-reduction symbols, and the one or more reserved-tone PAPR-reduction symbols based on the tone assignments to generate the multi-carrier modulated signal, wherein: one or more of steps (a), (b), and (c) is implemented by the computer.