Patent ID: 9294382
Filing Date: 2016-03-22
CPC Classification: H04L,H04W

Claim Text:
1. A method for increasing energy efficiency of a communication device, the method comprising: adaptively determining a clipping ratio (CR) of a signal input to the communication device based on a modulation scheme of the communication device; the adaptively determining comprising: determining to perform clipping with respect to the input signal in response to a neighboring modulation scheme and a self modulation scheme are low dimensional modulation schemes; and determining to perform clipping with respect to the input signal in response to the neighboring modulation scheme is a high dimensional modulation scheme and the self modulation scheme is a low dimensional modulation scheme; performing an inverse fast Fourier transform (IFFT) on the input signal; and in response to determining to perform clipping with respect to the input signal, clipping the IFFT signal based on the adaptively determined CR, wherein the CR is determined to be higher as a maximum allowable single amplitude increases, and the CR is determined to be lower as a power of the input signal increases.