Uplink ranging system and method in OFDMA system
US7359366B2 · kind B2 · utility
2Cited by
3References
10Claims
0Family size
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Key dates
| Filing date | Oct 21, 2004 |
| Grant date | Apr 15, 2008 |
| Priority date | — |
| Expiry date | Mar 17, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2655
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed is a ranging system and method in an OFDMA system. The ranging system includes complex exponential twiddle storage units for respectively storing complex exponential twiddle factors corresponding to a timing error, complex multipliers for respectively complex-multiplying the complex exponential twiddle factors by received uplink ranging data, code correlators for respectively correlating the outputs of the complex multipliers and ranging codes, and threshold comparators for respectively comparing the outputs of the code correlators with a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.