Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-03-22
2011-03-22
Appiah, Charles N (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S456300, C455S404100
Reexamination Certificate
active
07912481
ABSTRACT:
An invention for estimating the first path of an arrival signal by a method and device with a simple structure and lower power consumption. In this method, the nominal pulse repetition frequency or its integer multiple are A/D converted at a frequency less than the multiplicative inverse of the pulse width, the AD conversion timing is offset by time resolution Δt and the receive signal measured, data stored in a RAM, and the first path output time is estimated based on sequentially rearranging of the stored waveform data.
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Fujiwara Ryosuke
Miyazaki Masayuki
Mizugaki Kenichi
Appiah Charles N
Hitachi , Ltd.
Miles & Stockbridge P.C.
Stephen Emem
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