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Detail
Registered UPLINK RANGING SYSTEM AND METHOD IN OFDMA SYSTEM
- Inventors
- Young Ha Lee, Kim Jun-Woo, Hwang Seung Ku, 박윤옥
- Application No.
- 10971787 (2004.10.21)
- Publication No.
- 20050141474 (2005.06.30)
- Registration No.
- 7359366 (2008.04.15)
- Country
- UNITED STATES
- 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.
- KSP Keywords
- Complex Exponential, ranging system, timing error, twiddle factors