Orthogonal frequency division multiplexing access (OFDMA) ranging
US7675888B2 · kind B2 · utility
5Cited by
4References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 13, 2006 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Jan 21, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/0682
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for Orthogonal Frequency Division Multiplexing Access (OFDMA) ranging is provided. The method includes receiving a signal having OFDMA symbols. An FFT is performed on this signal. Matching ranging codes are found. The power for a given hypothesized ranging code is determined and compared to a power threshold to determine if the code was transmitted. The timing offset and power are reported as the result of ranging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.