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Detail
Registered FAST UPLINK RANGING SYSTEM AND METHOD IN MOBILE COMMUNICATION SYSTEM
- Inventors
- Moon Young Jin, Young-Il Kim
- Application No.
- 12516068 (2007.06.25)
- Publication No.
- 20100046431 (2010.02.25)
- Registration No.
- 8165069 (2012.04.24)
- Country
- UNITED STATES
- Abstract
- The present invention relates to a fast uplink ranging system and method in a mobile communication system. According to the present invention, a fast uplink ranging system transmits two pairs of ranging codes having the same value at locations spaced by half of FFT pointers. The fast uplink ranging system calculates a correlation value using the received two pairs of ranging codes. An order in which complex exponential twiddle factors for removing complex exponential terms corresponding to a time delay are searched is determined using the correlation value. Therefore, it is possible to reduce a time required for searching a timing error of a terminal using non-periodic symmetry of complex exponential twiddle factors corresponding to the timing error, compared with a known method of searching a complex exponential twiddle factor.
- KSP Keywords
- Communication system, Complex Exponential, Non-periodic, Time Delay, mobile communication, mobile communication system, ranging system, timing error, twiddle factors