Increasing OFDM transmit power via reduction in pilot tone

Details Increasing OFDM transmit power via reduction in pilot tone Increasing OFDM transmit power via reduction in pilot tone

2007-06-26

2007-06-26

Milord, Marceau (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

With control signal

C455S522000, C455S041200, C370S208000, C370S210000, C370S328000, C370S335000, C375S260000, C375S285000, C375S141000

Reexamination Certificate

active

10871603

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. Transmitting an ultra wideband (UWB) signal in some embodiments comprises determining whether to power shape the UWB signal; in the event that it is determined that the UWB signal is to be power shaped, reducing power within a first sub-band with respect to the nominal power of the UWB signal within the first sub-band; and correspondingly increasing power within a second sub-band with respect to the nominal power of the UWB signal within the second sub-band such that bandwidth of the UWB signal is maintained to be greater than or equal to a required bandwidth.

REFERENCES:
patent: 5748677 (1998-05-01), Kumar
patent: 6026125 (2000-02-01), Larrick et al.
patent: 6094458 (2000-07-01), Hellberg
patent: 6125124 (2000-09-01), Junell et al.
patent: 6292519 (2001-09-01), Popovic
patent: 6621808 (2003-09-01), Sadri
patent: 6690741 (2004-02-01), Larrick et al.
patent: 6754195 (2004-06-01), Webster et al.
patent: 6985498 (2006-01-01), Laroia et al.

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