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- Nachgewiesen in: USPTO Patent Applications
- Sprachen: English
- Document Number: 20140177427
- Publication Date: June 26, 2014
- Appl. No: 13/997238
- Application Filed: June 08, 2012
- Assignees: INTEL CORPORATION (Santa Clara, CA, US)
- Claim: 1. A method, comprising: multiplying a maximum resource block size by a number of subcarriers per resource block to obtain a value, wherein the maximum resource block size is based on a bandwidth of a wireless transmission channel; obtaining a largest prime number smaller than the value, resulting in a second value; generating a Zadoff-Chu sequence using a formula, wherein the sequence is based on the second value; and truncating the Zadoff-Chu sequence, resulting in a truncated Zadoff-Chu sequence, based on a second resource block size, wherein the second resource block size is associated with a second bandwidth.
- Claim: 2. The method of claim 1, further comprising: coupling the truncated Zadoff-Chu sequence to a signal for transmission over the wireless transmission channel at the second bandwidth.
- Claim: 3. The method of claim 1, wherein the Zadoff-Chu sequence has a size equal to the largest prime number, the method further comprising: cyclicly extending the Zadoff-Chu sequence to a second size, wherein the second size equals the maximum resource block size multiplied by the number of carriers per resource block; wherein the Zadoff-Chu sequence is quasi-orthogonal.
- Claim: 4. The method of claim 1, further comprising: measuring a peak-to-average power ratio (PAPR) of the Zadoff-Chu sequence; and if the PAPR exceeds a predetermined value, discarding the Zadoff-Chu sequence.
- Claim: 5. The method of claim 4, further comprising: generating a cyclic shift of the Zadoff-Chu sequence, resulting in a cyclic-shifted Zadoff-Chu sequence; and truncating the cyclic-shifted Zadoff-Chu sequence, resulting in the truncated Zadoff-Chu sequence; wherein the truncated Zadoff-Chu sequence is coupled to the signal for transmission over the wireless transmission channel.
- Claim: 6. The method of claim 5, further comprising: storing the Zadoff-Chu sequence in a lookup table; and storing the cyclic-shifted Zadoff-Chu sequence in the lookup table.
- Claim: 7. The method of claim 1, wherein the bandwidth is 10 MHz and the maximum resource block size is 48.
- Claim: 8. The method of claim 7, wherein each resource block in the 10 MHz bandwidth has twelve data subcarriers.
- Claim: 9. The method of claim 1, generating the Zadoff-Chu sequence using the formula further comprising using the following formula: [mathematical expression included] for 0≦n≦NZC−1 and wherein NZC is the second value.
- Claim: 10. The method of claim 1, further comprising: generating additional Zadoff-Chu sequences using the second value; and cyclicly extending the Zadoff-Chu sequences so that the number of Zadoff-Chu sequences is equal to the value, resulting in a plurality of Zadoff-Chu sequences; wherein the plurality of Zadoff-Chu sequences are quasi-orthogonal.
- Claim: 11. A user equipment, comprising: an antenna to transmit signals to and receive signals from a remote entity in a wireless neighborhood; a transceiver coupled to the antenna; a memory to store a software program; and a processor to execute the software program, wherein the software program performs the following operations: receiving, from a base station, an assignment of a Zadoff-Chu sequence from a plurality of Zadoff-Chu sequences; receiving, from the base station, an assignment of one or more resource blocks from a plurality of resource blocks, wherein plurality of resource blocks characterize a bandwidth of a wireless transmission channel; obtaining the assigned Zadoff-Chu sequence; truncating the assigned Zadoff-Chu sequence based on the resource block assignment, resulting in a truncated Zadoff-Chu sequence.
- Claim: 12. The user equipment of claim 11, wherein the software program further performs the following operation: generating the assigned Zadoff-Chu sequence using the following formula: [mathematical expression included] for 0≦n≦NZC−1 and wherein NZC is obtained by multiplying a maximum resource block size by a number of subcarriers per resource block to obtain a value, wherein the maximum resource block size is based on the bandwidth of the wireless transmission channel.
- Claim: 13. The user equipment of claim 12, wherein the software program further performs the following operation: cyclicly shifting the first Zadoff-Chu sequence, resulting in the assigned Zadoff-Chu sequence.
- Claim: 14. The user equipment of claim 11, further comprising: a lookup table loaded into the memory, wherein the software program retrieves the assigned Zadoff-Chu sequence from the lookup table.
- Claim: 15. The user equipment of claim 11, wherein the software program further performs the following operation: transmitting the signal to be transmitted with the truncated Zadoff-Chu sequence.
- Claim: 16. The user equipment of claim 14, wherein the software program further performs the following operation: retrieving the assigned Zadoff-Chu sequence from the lookup table, wherein the assigned Zadoff-Chu sequence is a cyclic-shifted version of another Zadoff-Chu sequence.
- Claim: 17. An article comprising a medium storing instructions to enable a processor-based system to: generate a Zadoff-Chu sequence using a formula, wherein the formula accepts as input a predetermined value, wherein the predetermined value is based on a bandwidth of a wireless transmission channel; receive an indication of which resource blocks to use for transmitting a signal over the wireless transmission channel; and truncate the Zadoff-Chu sequence based on the indication, resulting in a truncated Zadoff-Chu sequence.
- Claim: 18. The article of claim 17, further storing instructions to enable the processor-based system to: couple the truncated Zadoff-Chu sequence to a signal for transmission over the wireless transmission channel at a second bandwidth.
- Claim: 19. The article of claim 17, further storing instructions to enable the processor-based system to: multiply a maximum resource block size by a number of subcarriers per resource block to obtain a value, wherein the maximum resource block size is based on a bandwidth of a wireless transmission channel; obtain a largest prime number smaller than the value, resulting in a second value; subtract one from the second value, resulting in the predetermined number.
- Claim: 20. The article of claim 17, further storing instructions to enable the processor-based system to: measure a peak-to-average power ratio of the Zadoff-Chu sequence; and discard the Zadoff-Chu sequence if the peak-to-average power ratio exceeds a predetermined value.
- Claim: 21. The article of claim 17, further storing instructions to enable the processor-based system to: generate a cyclic shift of the Zadoff-Chu sequence, resulting in a cyclic-shifted Zadoff-Chu sequence; truncate the cyclic-shifted Zadoff-Chu sequence based on the indication, resulting in a cyclic-shifted truncated Zadoff-Chu sequence; and couple a signal to be transmitted with the cyclic-shifted truncated Zadoff-Chu sequence.
- Current U.S. Class: 370/208
- Current International Class: 04; 04
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