Wireless Transceiver with Reduced Transmit Emissions

A method of reducing out of band emissions, the method comprising:

• obtaining an uplink resource allocation restricted to a portion of a transmit band;
• offsetting a Local Oscillator from a first LO frequency to a second LO frequency;
• remapping at least a portion of the uplink resource allocation to compensate for a difference between the first LO frequency and the second LO frequency to generate a remapped resource allocation;
• generating a transmit signal based at least in part on the remapped resource allocation;
• and
• frequency converting the transmit signal to the portion of the transmit band using the second LO frequency.

A method of reducing out of band emissions, the method comprising:

• receiving an uplink resource allocation including at least one subcarrier allocation in an Uplink-Map message of a downlink time portion of a Time Domain Duplex (TDD) operating band, the uplink resource allocation constrained to a predetermined portion of the operating band;
• offsetting a frequency of a Local Oscillator (LO) from a receive LO frequency by an offset frequency;
• remapping the at least one subcarrier allocation based on the offset frequency to determine at least one offset subcarrier allocation;
• and
• generating a transmit signal based in part on the at least one offset subcarrier allocation.

An apparatus having reduced out of band emissions, the apparatus comprising:

• a receiver configured to receive an uplink resource allocation including at least one subcarrier allocation in a downlink time portion of a Time Domain Duplex (TDD) operating band, the uplink resource allocation constrained to a predetermined portion of the operating band;
• a Local Oscillator (LO) selectively tuned to a receive LO frequency during the downlink portion of the TDD operating band and to an uplink LO frequency during an uplink time portion of the TDD operating band, the difference between the receive LO frequency and the uplink LO frequency comprising an offset frequency;
• a LO controller configured to selectively tune the frequency of the LO based on an active TDD portion of the operating band;
• a channel index remapper configured to remap the at least one subcarrier allocation based on the offset frequency to determine at least one offset subcarrier allocation;
• and
• a signal generator configured to generate a transmit signal based at least in part on the at least one offset subcarrier allocation.

An apparatus having reduced out of band emissions, the apparatus comprising:

• means for receiving an uplink resource allocation including at least one subcarrier allocation in an Uplink-Map message of a downlink time portion of a Time Domain Duplex (TDD) operating band, the uplink resource allocation constrained to a predetermined portion of the operating band;
• means for offsetting a frequency of a Local Oscillator (LO) from a receive LO frequency by an offset frequency;
• means for remapping the at least one subcarrier allocation based on the offset frequency to determine at least one offset subcarrier allocation;
• and
• means for generating a transmit signal based in part on the at least one offset subcarrier allocation.

An apparatus having reduced out of band emissions, the apparatus comprising:

• means for obtaining an uplink resource allocation restricted to a portion of a transmit band;
• means for generating a transmit signal;
• and
• means for filtering the transmit signal to a signal bandwidth that is less than a bandwidth of the transmit band.

A processor-readable storage medium containing one or more instructions for a processor, the processor executing the one or more instruction performing the method comprising:

• receiving an uplink resource allocation including at least one subcarrier allocation in an Uplink-Map message of a downlink time portion of a Time Domain Duplex (TDD) operating band, the uplink resource allocation constrained to a predetermined portion of the operating band;
• controlling a frequency of a Local Oscillator to offset the LO frequency from a receive LO frequency by an offset frequency;
• and
• remapping the at least one subcarrier allocation based on the offset frequency to determine at least one offset subcarrier allocation.