Abstract: A signal to be transmitted is modified. An ultra wideband (UWB) signal to be transmitted is obtained, the UWB signal having a data carrying sub-band and a non data carrying sub-band. Information in the non data carrying sub-band is modified so that the power associated with the non data carrying sub-band is less than the power prior to the modification. Information in the data carrying sub-band is modified so that the power associated with the data carrying sub-band is greater than the power prior to the modification. The amount by which the data carrying sub-band increases in power is based at least in part on the amount by which the non data carrying sub-band decreases in power. A UWB signal is transmitted having the modified information in the non data carrying sub-band and the modified information in the data carrying sub-band.
Abstract: Transmitting an ultra wideband (UWB) signal in some embodiments comprises reducing power within a first sub-band with respect to a nominal power of the UWB signal within the first sub-band and correspondingly increasing power within a second sub-band with respect to a nominal power of the UWB signal within the second sub-band. An ultra wideband (UWB) transmitter comprises an input interface configured to receive data, a modulator configured to modulate received data into symbols and a power shaping component coupled to the modulator, configured to shape power density spectrum of a UWB signal being transmitted.
Type:
Grant
Filed:
June 17, 2004
Date of Patent:
June 26, 2007
Assignees:
Samsung Electronics Co., Ltd. (SAIT), Staccato Communications, Inc.