Patent · US Active

Method and apparatus for reducing transmitter interference

US8750411B2 · kind B2 · utility

1Cited by
3References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 30, 2011
Grant dateJun 10, 2014
Priority date
Expiry dateNov 26, 2032

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04L27/2626
  • WIPO fieldDigital communication
  • WIPO sectorElectrical engineering

Abstract

A method and apparatus mitigates spurious transmissions. An offset local oscillator signal is generated that is at a frequency that is offset from a nominal transmit channel carrier frequency by a spurious mitigation offset. An information signal is generated that comprises a series of modulation symbols and has a transmission bandwidth at baseband. A configured offset information signal is generated from the information signal, wherein the spectrum of the configured offset information signal is offset from DC by a channel configuration offset, and is further offset by a negative of the spurious mitigation offset. The offset local oscillator signal and the configured offset information signal are combined using a mixing technique. The spurious mitigation offset is zero when a spurious condition does not exist and is non-zero when the spurious condition does exist.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.