Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-09-30
2009-06-30
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S147000, C375S140000, C375S130000, C375S343000, C375S367000, C370S203000, C370S208000, C370S209000, C370S320000, C370S335000, C455S042000, C455S110000, C455S205000, C455S422100, C455S507000, C701S200000, C701S201000, C701S202000, C701S203000, C701S204000
Reexamination Certificate
active
07555034
ABSTRACT:
Provided is an apparatus and method for detecting timing errors based on characteristics of cyclic correlation. The apparatus and method can detect the timing errors of many users by using the cyclic characteristics of a midamble code at a time and detects the timing errors based on the characteristics of cyclic correlation to reduce the time required for detecting the users and lower the complexity in terms of Hardware. The apparatus includes a detection section controller, a register, a midamble generator, a midamble shifter, an accumulator, an adder, a shift register and a timing error detector.
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Bang Seung-Chan
Kim Nam-Il
Kim Young-Hoon
Nam Sang-Woo
Shin Eun-Jeong
Blakely & Sokoloff, Taylor & Zafman
Electronics and Telecommunications Research Institute
Liu Shuwang
McKie Gina
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