Method, device and system of reduced peak-to-average-ratio communication

• US 8,116,695 B2
• Filed: 01/10/2008
• Issued: 02/14/2012
• Est. Priority Date: 01/10/2008
• Status: Active Grant

• Current Assignee: Amimon Limited (Vitec Group PLC)
• Original Assignee: Amimon Limited (Vitec Group PLC)
• Inventors: Feder, Meir, Ingber, Amir
• Primary Examiner(s): HANNON, CHRISTIAN A
• Application Number:
  US11/971,934
• Publication Number:
  US 20090181628A1
• Time in Patent Office: 1,496 Days
• Field of Search: 370/204, 370/207, 370/209, 370/331, 370/503, 375/141, 455/101, 455/129
• US Class Current: 455/101
• CPC Class Codes: H04L 27/2604 Multiresolution systems by means of multiresolution subcarriers H04L27/183, H04L27/3488
• CPC Class Codes: H04L 27/2614 Peak power aspects
• CPC Class Codes: H04L 27/3411 reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
• CPC Class Codes: H04L 27/3488 Multiresolution systems
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver

Abstract

Some embodiments include devices, methods and/or systems of reduced peak-to-average-ratio communication. An apparatus may include a transmitter to transmit a transmission corresponding to an input signal, wherein the transmitter may include a peak-to-average-ratio-reduction transformer to generate a plurality of transformed data components by applying a predefined peak-to-average-ratio-reduction transform scheme to a plurality of fine constellation data components corresponding to the input signal, wherein a peak-to-average-ratio corresponding to the plurality of transformed data components is lower than a peak-to-average-ratio corresponding to the plurality of fine-constellation data components; and a transmission module to generate the transmission based at least on the plurality of transformed data components. Other embodiments are described and claimed.

Claims

1. An apparatus comprising a transmitter to transmit a transmission corresponding to a video input signal, said transmitter comprising:

a transformer to generate a set of transformed transmission symbol values by applying a reversible transform to an original set of transmission symbol values derived from portions of said video input signal such that the transformed transmission values have a lower peak-to-average-ratio than the original set of transmission symbol values;

a radio frequency transmission module to generate said transmission based at least on said set of transformed symbol values;

wherein said transmitter comprises a data-component mapper to map a plurality of data components representing said video signal into said original set of transmission symbol values; and

wherein said transmitter comprises a coefficient generator to generate a plurality of transformation coefficients representing said video signal by applying a predefined coefficient-generation transformation from a spatial domain to a frequency domain to said video signal, and wherein said original set of transmission symbol values comprise said plurality of transformation coefficients.

2. The apparatus of claim 1, wherein said transformer is adapted to apply a Hadamard transformation to said original set of transmission symbol values.

3. The apparatus of claim 2, wherein said transformer is adapted to multiply a block of a predefined number of original transmission symbol values by a predefined Hadamard transformation matrix.

4. The apparatus of claim 2, wherein said transmitter comprises a plurality of antennas to transmit said wireless transmission, and wherein said radio-frequency module comprises a framer to construct a wireless transmission frame of said transmission by mapping said transformed set of transmission symbol values to frequency bins, and to apply a predefined antenna-mapping transformation to at least one set of transformed transmission symbol values, which are mapped to a common frequency bin.

5. The apparatus of claim 4, wherein said framer is adapted to multiply a set of transformed transmission symbol values by a Hadamard transformation matrix having a number of rows equal to a number of said plurality of antennas.

6. The apparatus of claim 4, wherein said transformer comprises:

a divider to divide said original set of transmission symbol values into a plurality of streams; and

a plurality of transformation modules to apply said transformation to said plurality of streams.

7. The apparatus of claim 1, wherein said coefficient-generation transformation comprises a discrete-cosine-transform or a wavelet transformation.

8. The apparatus of claim 1 comprising a video source to generate said video signal.

9. A method of transmitting a radio frequency transmission corresponding to a video input signal, said method comprising:

applying to a plurality of original set of transmission symbol values corresponding to said video input signal a reversible transform to generate a plurality of transformed set of transmission symbol values having a peak-to-average-ratio lower than a peak-to-average-ratio lower than the original set of transmission symbol values; and

transmitting said radio frequency transmission based at least on said transformed set of transmission symbol values;

comprising mapping a plurality of data components representing said video signal into said original set of transmission symbol values, wherein said transmitting comprises transmitting said wireless transmission based on said transformed set of transmission symbol values;

wherein said applying comprises applying a predefined Hadamard transformation to said original set of transmission symbol values; and

wherein transmitting said wireless transmission comprises transmitting said wireless transmission via a plurality of antennas, and wherein said method comprises;

constructing a wireless transmission frame of said transmission by mapping said transformed set of transmission symbol values to a plurality of sets of fine frequency bins.

10. The method of claim 9, wherein applying said Hadamard transformation comprises multiplying a block of a number of said original transmission symbol values by a predefined Hadamard transformation matrix.

11. The method of claim 9, wherein applying said antenna-mapping transformation comprises multiplying said set of transformed symbol values by a Hadamard transformation matrix having a number of rows equal to a number of said plurality of antennas.

12. The method of claim 9, wherein applying said Hadamard transformation comprises:

dividing said original set of transmission symbol values into a plurality of streams; and

applying said Hadamard transformation to said plurality of streams, respectively.

13. The method of claim 9 comprising applying a predefined coefficient-generation transformation to said video signal to generate a plurality of transformation coefficients representing said video, and wherein said original set of transmission symbol values comprise said plurality of transformation coefficients.

14. The method of claim 13, wherein said coefficient-generation transformation comprises a transformation from a spatial domain to a frequency domain.

15. A method of transmitting a radio frequency transmission corresponding to a video input signal, said method comprising:

applying to a plurality of original set of transmission symbol values corresponding to said video input signal a reversible transform to generate a plurality of transformed set of transmission symbol values having a peak-to-average-ratio lower than a peak-to-average- ratio lower than the original set of transmission symbol values; and

transmitting said radio frequency transmission based at least on said transformed set of transmission symbol values, wherein said transmitting comprises a wireless transmission corresponding to said video input signal;

mapping a plurality of data components representing said video input signal into an original set of transmission symbol values, wherein said transmitting comprises transmitting said wireless transmission based on said transformed set of transmission symbol values; and

applying a predefined coefficient-generation transformation to said video signal to generate a plurality of transformation coefficients representing said video, and wherein said original set of transmission symbol values comprise said plurality of transformation coefficients, wherein said coefficient-generation transformation comprises a transformation from a spatial domain to a frequency domain.