Pulse or digital communications – Receivers – Angle modulation
Patent
1997-03-12
1998-11-03
Tse, Young T.
Pulse or digital communications
Receivers
Angle modulation
375327, 375332, 375344, 329307, H04L 2738
Patent
active
058320407
ABSTRACT:
It is an object to enlarge the phase range in which a phase error can be determined. An operating block (1) calculates a power of carriers from data DI and DQ. An ideal symbol estimating block (2a) outputs a plurality of ideal symbols which correspond to the power of carriers outputted from the operating block (1). A phase error tan(.theta.) calculating block (2b) calculates prediction phase errors between the ideal symbols and the symbol given by the data DI and DQ. A phase error determining block (3) determines a phase error from among the prediction phase errors outputted from the phase error tan(.theta.) calculating block and outputs the phase error.
REFERENCES:
patent: 5400366 (1995-03-01), Iwamatsu
patent: 5418815 (1995-05-01), Ishikawa et al.
patent: 5440587 (1995-08-01), Ishikawa et al.
patent: 5465271 (1995-11-01), Hladik et al.
patent: 5533068 (1996-07-01), Muto
patent: 5608764 (1997-03-01), Sugita et al.
patent: 5614861 (1997-03-01), Harada
patent: 5754591 (1998-05-01), Samueli et al.
Fujiwara Takashi
Ido Jun
Murakami Shuji
Yamanaka Kazuya
Mitsubishi Denki & Kabushiki Kaisha
Tse Young T.
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