Patent ID: 7839954
Filing Date: 2010-11-23
Classification: H03C

Abstract:
1. A method comprising: a. sampling an input signal to generate a plurality of discrete sampled IQ values within an IQ domain, wherein each sampled IQ value includes an in-phase component and a quadrature component; b. for a first sampled IQ value at the origin, revaluing the first sampled IQ value to a first revalued sampled IQ value, wherein the first revalued sample IQ value is a non-origin IQ value; c. for each consecutive sampled IQ value at the origin that immediately follows the first sampled IQ value, rotating the first revalued sampled IQ value about the origin, thereby forming a next revalued sampled IQ value such that each next revalued sampled IQ value is an immediately preceding revalued sample IQ value rotated about the origin; and modulating each sampled IQ value not originally at the origin and each revalued sampled IQ value, wherein a direction of rotation used to form each next revalued sampled IQ value is clockwise, thereby distributing more energy to a low frequency side of a carrier band than to a high frequency side.