Method and apparatus for single carrier spreading
First Claim
1. A method of communication comprising:
- assigning Golay codes to be used for spreading, the Golay codes comprising a first Golay code and a second Golay code;
spreading data with the Golay codes to produce a signal, wherein the first Golay code is used to spread the data during a first time period, wherein the second Golay code is used to spread the data during a second time period, and wherein the spreading reduces autocorrelation peaks of the signal; and
transmitting the signal.
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Abstract
A wireless device comprises a code-assignment module configured for assigning Golay codes to be used for spreading, a spreading module configured for spreading data with the Golay codes to produce a signal, wherein the Golay codes are randomly used to spread the data, and a transmitter configured for transmitting the signal. The wireless device may transmit a first beacon signal via a set of quasi-omni beam patterns, and a second beacon signal via a set directional beam patterns. The first beacon signal has a first transmission rate that is higher than the second beacon signal'"'"'s the transmission rate. Extended Golay codes having zero periodic cross-correlation may be generated from a Golay code and a set of short sequences. A data block transmitted by the wireless device may comprise Golay codes and data portions, wherein every data portion is between two Golay codes and every Golay code is between two data portions.
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Citations
25 Claims
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1. A method of communication comprising:
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assigning Golay codes to be used for spreading, the Golay codes comprising a first Golay code and a second Golay code; spreading data with the Golay codes to produce a signal, wherein the first Golay code is used to spread the data during a first time period, wherein the second Golay code is used to spread the data during a second time period, and wherein the spreading reduces autocorrelation peaks of the signal; and transmitting the signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of communication comprising:
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assigning Golay codes to be used for spreading, the Golay codes comprising a first Golay code and a second Golay code; spreading data with the Golay codes to produce a signal, wherein the first Golay code is used to spread the data during a first time period, wherein the second Golay code is used to spread the data during a second time period; and transmitting the signal, wherein assigning comprises selecting the Golay codes from a set of Golay codes, said set of Golay codes being usable to spread data for communication via a plurality of links, and wherein; the selected Golay codes are used for communication via a first link; a subset of the unselected Golay codes are used for communication via a second link; and the selected Golay codes and the unselected Golay codes associated with the second communication link have low cross correlation.
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9. An apparatus for communication comprising:
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means for assigning Golay codes to be used for spreading, the Golay codes comprising a first Golay code and a second Golay code; means for spreading data with the Golay codes to produce a signal, wherein the first Golay code is used to spread the data during a first time period, wherein the second Golay code is used to spread the data during a second time period, and wherein the spreading reduces autocorrelation peaks of the signal; and means for transmitting the signal. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An apparatus for communication comprising:
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means for assigning Golay codes to be used for spreading, the Golay codes comprising a first Golay code and a second Golay code; means for spreading data with the Golay codes to produce a signal, wherein the first Golay code is used to spread the data during a first time period, wherein the second Golay code is used to spread the data during a second time period; and means for transmitting the signal, wherein the means for assigning is configured for selecting the Golay codes from a set of Golay codes, said set of Golay codes being usable to spread data for communication via a plurality of links, and wherein; the selected Golay codes are used for communication via a first link; a subset of the unselected Golay codes are used for communication via a second link; and the selected Golay codes and the unselected Golay codes associated with the second communication link have low cross correlation.
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17. An apparatus for communication comprising:
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a code-assignment module configured for assigning Golay codes to be used for spreading, the Golay codes comprising a first Golay code and a second Golay code; a spreading module configured for spreading data with the Golay codes to produce a signal, wherein the first Golay code is used to spread the data during a first time period, wherein the second Golay code is used to spread the data during a second time period, and wherein the spreading reduces autocorrelation peaks of the signal; and a transmitter configured for transmitting the signal. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A non-transitory computer-readable medium encoded with instructions executable to:
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assign Golay codes to be used for spreading, the Golay codes comprising a first Golay code and a second Golay; and spread data with the Golay codes to produce a signal, wherein the first Golay code is used to spread the data during a first time period, wherein the second Golay code is used to spread the data during a second time period, and wherein the spreading reduces autocorrelation peaks of the signal.
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25. An access terminal comprising:
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an antenna; a code-assignment module configured for assigning Golay codes to be used for spreading, the Golay codes comprising a first Golay code and a second Golay code; a spreading module configured for spreading data with the Golay codes to produce a signal, wherein the first Golay code is used to spread the data during a first time period, wherein the second Golay code is used to spread the data during a second time period, and wherein the spreading reduces autocorrelation peaks of the signal; and a transmitter configured for transmitting the signal via the antenna.
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Specification