Pulse or digital communications – Repeaters – Testing
Patent
1997-03-26
1998-10-13
Tse, Young T.
Pulse or digital communications
Repeaters
Testing
H04J 1300
Patent
active
058223649
ABSTRACT:
A spectrum spread receiver is provided with a delayed waveform phase determination circuit which determines whether or not a detected delayed waveform is in the phase as the previously-detected delayed waveform, and outputs a delayed waveform switch signal if they are out of phase with each other. If the delayed waveform switch signal is in an ON state, on the basis of the signal despread by a second despreading circuit 7 and the delayed waveform switch signal, a demodulation circuit 9 demodulates the first half and second half of a received signal, as a boundary is a received signal at which a delayed waveform switch signal is turned on, by using the phase estimated from a first known signal and the phase estimated from a second known signal, thereby preventing the received signal from becoming degraded.
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Takakusaki Keiji
Yamada Daisuke
Matsushita Electric - Industrial Co., Ltd.
Tse Young T.
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