Title:
基準発振器調波干渉を抑制する方法および関連する受信機
Document Type and Number:
Japanese Patent JP4447776
Kind Code:
B2
Abstract:
A receiver tunable to a plurality of frequency channels includes a reference frequency generator, a downconverter, an analog-to-digital converter, and a processor. The reference frequency generator generates a reference frequency signal, and the downconverter downconverts received signals to provide intermediate frequency signals. Moreover, the downconverter is synchronized to the reference frequency signal. The analog-to-digital converter generates a plurality of complex numbers representative of the received signals including interference components responsive to the intermediate frequency signals wherein the analog-to-digital converter is synchronized to the reference frequency signal. The processor estimates an origin point for the plurality of complex numbers and subtracts the origin point from each of the complex numbers thereby producing interference-compensated complex numbers representative of the received signals with reduced internally generated interference. Moreover, the processor processes the interference-compensated complex numbers to obtain desired signaling information. Related methods are also discussed.
Inventors:
Dent, Paul, Wilkinson
Application Number:
JP2000552764A
Publication Date:
April 07, 2010
Filing Date:
May 07, 1999
Export Citation:
Assignee:
ERICSSON INC.
International Classes:
H04B1/26; A61K31/505; H04L27/38; A61K31/70; H03D3/00; H03D7/16; H04L25/06; H04L27/00
Domestic Patent References:
| JP63500766A | ||||
| JP9162939A | ||||
| JP6069820A |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Youhei Kawabata
Kato Takushi
Yasuhiro Sakata
Hayashi Zouzo
Masafumi
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Osamu Shimoyama
Nagakawa Yukimitsu
Youhei Kawabata
Kato Takushi
Yasuhiro Sakata
Hayashi Zouzo
Masafumi