Data transmission coexistence using constant symbol duration within television white space channels

A transmitter device, comprising:

• a channel identifier adapted to identify an unused channel within a television broadcast frequency spectrum, the unused channel having a pre-defined channel bandwidth;
• a waveform generator adapted to generate a downclocked waveform by applying a factor to a clock that causes a waveform bandwidth to be reduced from a first bandwidth to a second bandwidth while maintaining a constant symbol duration for all bandwidths within an operating regulatory domain for the transmitter device;
• and
• a wireless transmitter adapted to wirelessly transmit the downclocked waveform over the identified unused channel.

A transmitter device for wireless communications, comprising:

• means for identifying an unused channel within a television broadcast frequency spectrum, the unused channel having a pre-defined channel bandwidth;
• means for generating a downclocked waveform by applying a factor to a clock that causes a waveform bandwidth to be reduced from a first bandwidth to a second bandwidth while maintaining a constant symbol duration for all bandwidths within an operating regulatory domain;
• and
• means for wirelessly transmitting the downclocked waveform over the identified unused channel.

A processor-readable medium having one or more instructions operational in a wireless transmitter device, which when executed by one or more processors causes the one or more processors to:

• identify an unused channel within a television broadcast frequency spectrum, the unused channel having a pre-defined channel bandwidth;
• generate a downclocked waveform by applying a factor to a clock that causes a waveform bandwidth to be reduced from a first bandwidth to a second bandwidth while maintaining a constant symbol duration for all bandwidths within an operating regulatory domain;
• and
• wirelessly transmit the downclocked waveform over the identified unused channel.

A method for wireless communications, comprising:

• monitoring one or more repurposed channels of a television broadcast frequency spectrum for data waveforms, wherein waveforms of different bandwidths coexists within the one or more repurposed channels;
• receiving a waveform over a repurposed channel from among the one or more repurposed channels, wherein the received waveform has a second bandwidth smaller than the channel bandwidth;
• processing the received waveform by applying a factor to a clock that causes a waveform bandwidth to be reduced from a first bandwidth to a second bandwidth, wherein waveforms of all bandwidths within an operating regulatory domain have a constant symbol duration;
• and
• extracting a data payload from the received waveform.

A receiver device, comprising:

• a wireless receiver adapted to
• monitor one or more repurposed channels of a television broadcast frequency spectrum for data waveforms, wherein waveforms of different bandwidths coexists within the one or more repurposed channels;
• receive a waveform over a repurposed channel from among the one or more repurposed channels, wherein the received waveform has a second bandwidth smaller than the channel bandwidth;
• a waveform decoding circuit adapted to
• process the received waveform by applying a factor to a clock that causes a waveform bandwidth to be reduced from a first bandwidth to a second bandwidth, wherein waveforms of all bandwidths within an operating regulatory domain have a constant symbol duration;
• and
• extract a data payload from the received waveform.

A receiver device for wireless communications, comprising:

• means for monitoring one or more repurposed channels of a television broadcast frequency spectrum for data waveforms, wherein waveforms of different bandwidths coexists within the one or more repurposed channels;
• means for receiving a waveform over a repurposed channel from among the one or more repurposed channels, wherein the received waveform has a second bandwidth smaller than the channel bandwidth;
• means for processing the received waveform by applying a factor to a clock that causes a waveform bandwidth to be reduced from a first bandwidth to a second bandwidth, wherein waveforms of all bandwidths within an operating regulatory domain have a constant symbol duration;
• and
• means for extracting a data payload from the received waveform.

A processor-readable medium having one or more instructions operational in a wireless receiver device, which when executed by one or more processors causes the one or more processors to:

• monitor one or more repurposed channels of a television broadcast frequency spectrum for data waveforms, wherein waveforms of different bandwidths coexists within the one or more repurposed channels;
• receive a waveform over a repurposed channel from among the one or more repurposed channels, wherein the received waveform has a second bandwidth smaller than the channel bandwidth;
• process the received waveform by applying a factor to a clock that causes a waveform bandwidth to be reduced from a first bandwidth to a second bandwidth, wherein waveforms of all bandwidths within an operating regulatory domain have a constant symbol duration;
• and
• extract a data payload from the received waveform.