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Title:
MODULATOR, FILTER, FILTER GAIN CONTROL METHOD, AND CODE MODULATING METHOD
Document Type and Number:
WIPO Patent Application WO/2007/037124
Kind Code:
A1
Abstract:
A modulator of small size, low cost, low power consumption, small heat generation, and less spurious signals. The modulator comprises multipliers (101, 102) for code-modulating received transmission data (D(n), C(n)) and outputting the modulated data, a complex computing section (120), a data channel gain factor signal generator (106) for generating a gain control signal, a control channel gain factor signal generator (107), and weighting coefficient setting signal generators (108, 109) for receiving the output of the complex computing section (120) and controlling the gains of the raised cosine filters (110 to 113).

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Inventors:
OGA TOSHIYUKI (JP)
Application Number:
PCT/JP2006/318123
Publication Date:
April 05, 2007
Filing Date:
September 13, 2006
Export Citation:
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Assignee:
NEC CORP (JP)
OGA TOSHIYUKI (JP)
International Classes:
H04B1/707; H04L27/20
Domestic Patent References:
WO2001076114A12001-10-11
Foreign References:
JP2006020214A2006-01-19
JP2001285252A2001-10-12
JP2001339365A2001-12-07
JP2001156679A2001-06-08
Other References:
See also references of EP 1931056A4
Attorney, Agent or Firm:
SUZUKI, Hiroh (Chanokiya Bldg. 3-1, Nihonbashi-Honcho 2-chom, Chuo-ku Tokyo 23, JP)
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