Patent ID: 8149969
Filing Date: 2012-04-03
Classification: H04L

Abstract:
1. For use in a wireless network, a subscriber station configured to communicate with the wireless network according to a multi-carrier protocol, the subscriber station comprising: a size M Fourier Transform (FT) block configured to receive input symbols and generating therefrom M FT pre-coded outputs; and a spectral shaping filter block configured to receive the M FT pre-coded outputs and generating therefrom a plurality of spectrally shaped outputs; wherein the subscriber station configures the spectral shaping filter block based on whether a first packet to be transmitted to the wireless network comprises control information or user data such that, when the first packet comprises user data, the subscriber station configures the spectral shaping filter block to perform spectral shaping according to a peak-to-average power (PAPR) value associated with the first packet, and when the first packet comprises control information, the subscriber station configures the spectral shaping filter block to operate as a filter type known at an intended receiver of the first packet to be used only with control information, wherein the control information comprises at least one parameter associated with the spectral shaping of user data packets.