Patent ID: 7706465
Filing Date: 2010-04-27
Classification: H04B,H04L

Abstract:
1. A method for transmitting data by a secondary user of spectrum, the method comprising the steps of: receiving data to be transmitted by a wireless transmitter within a secondary communication system; spreading, the data with a spreader within the wireless transmitter; modulating all of the data onto a plurality of available channels with a modulator within the wireless transmitter; sensing channels from the plurality of available channels that are occupied by a primary user of the spectrum; transmitting by the wireless transmitter, only a portion of the spread data over a number of channels that are not being used by the primary user of the spectrum, and wherein the number of channels is less than the plurality of available channels, and wherein the wireless transmitter will not transmit the data that was modulated over the channels that are being used by the primary user of the spectrum; and wherein the wireless transmitter is allowed to transmit only if transmissions will not interfere with the primary user of the spectrum.