Method and apparatus for providing single-sideband orthogonal frequency division multiplexing (OFDM) transmission
OwnerGiridhar Mandyaminventor
Life of this patent
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Abstract
An approach is provided for utilizing single sideband orthogonal frequency division multiplexing (OFDM) transmission. A first transmission area (e.g., cell in a cellular system) is assigned to use a first single OFDM signal. A second transmission area is assigned to use a second single sideband OFDM signal. The first single sideband OFDM signal is different from the second single sideband OFDM signal, and each of the single sideband OFDM signals is based on sinusoidal transform (e.g., Discrete Cosine Transform or Discrete Sine Transform).
Claims32
A method comprising:
- receiving a data vector;
- transforming the data vector by an inverse of a sinusoidal transform;
- extending the transformed vector symmetrically to output orthogonal frequency division multiplexing (OFDM) symbols;
- and
- generating a single sideband signal representing the OFDM symbols, wherein the single sideband signal is transmitted according to a predetermined scheme to minimize co-channel interference.
An apparatus comprising:
- a transform logic configured to transform a received data vector by an inverse of a sinusoidal transform;
- and
- an add symmetric extension logic configured to extend the transformed vector symmetrically to output orthogonal frequency division multiplexing (OFDM) symbols,
- wherein a single sideband signal representing the OFDM symbols is generated, the single sideband signal being transmitted according to a predetermined scheme to minimize co-channel interference.
A method comprising:
- receiving a single sideband signal that represents orthogonal frequency division multiplexing (OFDM) symbols, wherein the single sideband signal having been transmitted according to a predetermined scheme to minimize co-channel interference, the OFDM symbols representing a symmetric data vector;
- transforming the OFDM symbols by applying a sinusoidal transform;
- and
- outputting the data vector from the transformed OFDM symbols.
An apparatus comprising:
- means for receiving a single sideband signal that represents orthogonal frequency division multiplexing (OFDM) symbols, wherein the single sideband signal having been transmitted according to a predetermined scheme to minimize co-channel interference, the OFDM symbols representing a symmetric data vector;
- means for transforming the OFDM symbols by applying a sinusoidal transform;
- and
- means for outputting the data vector from the transformed OFDM symbols.
A method comprising:
- assigning a first transmission area to use a first single sideband orthogonal frequency division multiplexing (OFDM) signal;
- and
- assigning a second transmission area to use a second single sideband OFDM signal,
- wherein the first single sideband OFDM signal is different from the second single sideband OFDM signal, and each of the single sideband OFDM signals is based on sinusoidal transform.
A system comprising:
- a processor configured to assign a first transmission area to use a first single sideband orthogonal frequency division multiplexing (OFDM) signal, the processor being further configured to assign a second transmission area to use a second single sideband OFDM signal,
- wherein the first single sideband OFDM signal is different from the second single sideband OFDM signal, and each of the single sideband OFDM signals is based on sinusoidal transform.
Dependencies are inferred from the claim text.