Transmit spectral shaping for reducing distortion in a receiver
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsMats BLOMGREN, Sumedh DHABU, Mark WYVILLE
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Abstract
A method, system and apparatus for transmit spectral shaping for reducing distortion in a receiver are disclosed. According to one aspect, a method in a network node includes determining a spectral shaping filter for each of a plurality of sub-bands, each sub-band of the plurality of sub-bands being within a band that includes a carrier of a set of carriers, the spectral shaping filter for a sub-band being based at least in part on an intermodulation distortion (IMD) that overlaps with at least one sub-band of the plurality of sub-bands. The method also includes applying the spectral shaping filters to the sub-bands of the plurality of sub-bands.
Claims21
A method in a network node configured to communicate with a wireless device, WD, the method comprising:
- determining a spectral shaping filter for each of a plurality of sub-bands, each sub-band of the plurality of sub-bands being within a band that includes a carrier of a set of carriers, the spectral shaping filter for a sub-band being based at least in part on an intermodulation distortion, IMD, that overlaps with at least one sub-band of the plurality of sub-bands;
- and
- applying the spectral shaping filters to the sub-bands of the plurality of sub-bands.
A network node configured to communicate with a wireless device, WD, the network node comprising:
- a power limiter controller configured to determine a spectral shaping filter for each of a plurality of sub-bands, each sub-band of the plurality of sub-bands being within a band that includes a carrier of a set of carriers, the spectral shaping filter for a sub-band being based at least in part on an intermodulation distortion, IMD, that overlaps with at least one sub-band of the plurality of sub-bands;
- and
- a plurality of power limiters in communication with the power limiter controller, each power limiter configured to apply a spectral shaping filter to a sub-band of the plurality of sub-bands.
-30. (canceled)
Dependencies are inferred from the claim text.