JP3844756B2 - 通信信号の位相誤差を最小化する位相復調方法 - Google Patents
通信信号の位相誤差を最小化する位相復調方法 Download PDFInfo
- Publication number
- JP3844756B2 JP3844756B2 JP2003346869A JP2003346869A JP3844756B2 JP 3844756 B2 JP3844756 B2 JP 3844756B2 JP 2003346869 A JP2003346869 A JP 2003346869A JP 2003346869 A JP2003346869 A JP 2003346869A JP 3844756 B2 JP3844756 B2 JP 3844756B2
- Authority
- JP
- Japan
- Prior art keywords
- phase
- error
- phase error
- communication signal
- algorithm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 28
- 238000004891 communication Methods 0.000 title claims description 21
- 238000005070 sampling Methods 0.000 claims description 30
- 239000002131 composite material Substances 0.000 description 4
- 230000000644 propagated effect Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2338—Demodulator circuits; Receiver circuits using non-coherent demodulation using sampling
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
ルゴリズムが要求される。
Claims (3)
- 下記の数式1(式中、kはサンプリング回数を、ckは複素定数を意味する)のように示す所定のディジタル位相復調アルゴリズムを利用した所定回数のサンプリングを通じて位相変調された通信信号を復調する位相復調方法において、
前記ディジタル位相復調アルゴリズムに位相誤差を最小化するための一回のサンプリングを追加して位相変調された通信信号を復調することを特徴とする通信信号の位相誤差を最小化する位相復調方法。
- ディジタル位相復調アルゴリズムに位相誤差の最小化のための一回のサンプリングを追加する過程が下記の数式2(式中、kはサンプリング回数を、c kとdkは複素定数を、λ−χは追加された一回のサンプリングを意味する)により行われる請求項1記載の通信信号の位相誤差を最小化する位相復調方法。
- 位相誤差の最小化は下記の数式3(式中、kはサンプリング回数を、c kとdkは複素定数を、γは位相誤差を意味する)を満たすγ値により決定される請求項2記載の通信信号の位相誤差を最小化する位相復調方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020020061478A KR100640432B1 (ko) | 2002-10-09 | 2002-10-09 | 통신신호의 위상오차를 최소화하는 위상복조방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004135332A JP2004135332A (ja) | 2004-04-30 |
JP3844756B2 true JP3844756B2 (ja) | 2006-11-15 |
Family
ID=32026130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003346869A Expired - Fee Related JP3844756B2 (ja) | 2002-10-09 | 2003-10-06 | 通信信号の位相誤差を最小化する位相復調方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6859094B2 (ja) |
EP (1) | EP1408663A3 (ja) |
JP (1) | JP3844756B2 (ja) |
KR (1) | KR100640432B1 (ja) |
CN (1) | CN100433744C (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7903769B2 (en) | 2005-12-12 | 2011-03-08 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for phase-noise compensation in digital receivers |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52123670A (en) * | 1976-04-09 | 1977-10-18 | Takeda Riken Ind Co Ltd | Digital frequency measuring device |
US4112497A (en) * | 1977-03-29 | 1978-09-05 | Nasa | Digital demodulator-correlator |
US4412302A (en) * | 1980-12-15 | 1983-10-25 | Rca Corporation | Digital phase demodulation and correlation |
KR960009537B1 (en) * | 1993-12-21 | 1996-07-20 | Korea Electronics Telecomm | Circuit for detecting phase transformation |
KR950026141A (ko) * | 1994-02-08 | 1995-09-18 | 이헌조 | 심볼 타이밍 보상 장치 |
JPH08139775A (ja) * | 1994-11-14 | 1996-05-31 | Toyo Commun Equip Co Ltd | ディジタル復調装置 |
US5796780A (en) * | 1996-02-09 | 1998-08-18 | Ericsson Inc. | Coherent modulation of CPM signals |
KR100200589B1 (ko) * | 1996-06-12 | 1999-06-15 | 윤종용 | 고해상도 텔레비젼 수신기의 디지털 복조회로 및 방법 |
JP3085361B2 (ja) * | 1996-10-22 | 2000-09-04 | 日本電気株式会社 | デジタル復調器における多段検波システム |
JP3918329B2 (ja) * | 1998-11-24 | 2007-05-23 | 富士通株式会社 | 受信装置および受信方法 |
KR100429981B1 (ko) * | 2001-12-26 | 2004-05-03 | 엘지전자 주식회사 | Aqm의 에러보상장치 및 방법 |
-
2002
- 2002-10-09 KR KR1020020061478A patent/KR100640432B1/ko not_active IP Right Cessation
-
2003
- 2003-07-08 US US10/616,174 patent/US6859094B2/en not_active Expired - Lifetime
- 2003-08-21 CN CNB031543936A patent/CN100433744C/zh not_active Expired - Fee Related
- 2003-10-06 JP JP2003346869A patent/JP3844756B2/ja not_active Expired - Fee Related
- 2003-10-08 EP EP03022850A patent/EP1408663A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP1408663A2 (en) | 2004-04-14 |
US6859094B2 (en) | 2005-02-22 |
CN100433744C (zh) | 2008-11-12 |
EP1408663A3 (en) | 2006-12-06 |
KR20040032370A (ko) | 2004-04-17 |
US20040071230A1 (en) | 2004-04-15 |
CN1489352A (zh) | 2004-04-14 |
KR100640432B1 (ko) | 2006-10-30 |
JP2004135332A (ja) | 2004-04-30 |
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