JP4217705B2 - 受信装置 - Google Patents
受信装置 Download PDFInfo
- Publication number
- JP4217705B2 JP4217705B2 JP2005278467A JP2005278467A JP4217705B2 JP 4217705 B2 JP4217705 B2 JP 4217705B2 JP 2005278467 A JP2005278467 A JP 2005278467A JP 2005278467 A JP2005278467 A JP 2005278467A JP 4217705 B2 JP4217705 B2 JP 4217705B2
- Authority
- JP
- Japan
- Prior art keywords
- reception
- signal
- omni
- received signal
- receiving
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Description
(1)QPSK方式であれば、受信レベルが10dBuVより小さい場合にはOmni受信、10dBuV以上であればAA受信と判定し、
(2)16QAM方式であれば、受信レベルが15dBuVより小さい場合にはOmni受信、15dBuV以上であればAA受信と判定し、
(3)64QAM方式であれば、受信レベルが20dBuVより小さい場合にはOmni受信、20dBuV以上であればAA受信と判定し、
この判定結果によりスイッチ14a,14bを該当する受信系統に切替え動作させる。
Claims (6)
- 複数のアンテナそれぞれの受信した受信信号をオムニ復調するオムニ受信手段と、
前記受信信号をアダプティブアレイ方式にて復調するアダプティブアレイ受信手段と、
前記受信信号を前記オムニ受信手段または前記アダプティブアレイ受信手段のいずれか一方に入力する入力切替え手段と、
前記受信信号の信号品質を逐次検出する品質検出手段と、
前記品質検出手段が逐次検出する前記信号品質に基づき、前記入力切替え手段を用いて前記オムニ受信手段または前記アダプティブアレイ受信手段のいずれか一方に前記受信信号を入力させる受信方式判定手段と
を備え、
前記受信方式判定手段は、
前記信号品質の移動平均値が閾値よりも劣化した場合、または前記信号品質が所定回数連続して閾値よりも劣化した場合に、前記受信信号を前記アダプティブアレイ受信手段に入力させ、
前記移動平均値が閾値よりも良化した場合、または前記信号品質が所定回数連続して閾値よりも良化した場合に、前記受信信号を前記オムニ受信手段に入力させる
ことを特徴とする受信装置。 - 前記受信装置は、多入力多出力通信が実行される無線通信システムにおいて用いられ、
前記複数のアンテナのそれぞれは、複数のアンテナを有する送信機から送信された複数の個別信号が混在した信号を受信し、
前記オムニ受信手段は、前記入力切替え手段から前記受信信号が入力された場合、前記オムニ復調によって、前記受信信号に含まれる前記複数の個別信号を分離し、
前記アダプティブアレイ受信手段は、前記入力切替え手段から前記受信信号が入力された場合、前記アダプティブアレイ方式を用いて、前記受信信号に含まれる前記複数の個別信号を分離することを特徴とする請求項1に記載の受信装置。 - 前記信号品質は、前記受信信号のフェージング速度であることを特徴とする請求項1または2に記載の受信装置。
- 前記信号品質は、前記受信信号の受信エラー率であることを特徴とする請求項1または2に記載の受信装置。
- 前記信号品質は、前記受信信号の信号レベルであることを特徴とする請求項1または2に記載の受信装置。
- 前記品質検出手段は、前記受信信号の変調方式を判定し、
前記受信方式判定手段は、前記変調方式の変調多値数が多いほど、前記閾値を高くすることによって、前記受信信号を前記オムニ受信手段に優先的に入力させることを特徴とする請求項5に記載の受信装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005278467A JP4217705B2 (ja) | 2005-09-26 | 2005-09-26 | 受信装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005278467A JP4217705B2 (ja) | 2005-09-26 | 2005-09-26 | 受信装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007089068A JP2007089068A (ja) | 2007-04-05 |
JP4217705B2 true JP4217705B2 (ja) | 2009-02-04 |
Family
ID=37975571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005278467A Expired - Fee Related JP4217705B2 (ja) | 2005-09-26 | 2005-09-26 | 受信装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4217705B2 (ja) |
-
2005
- 2005-09-26 JP JP2005278467A patent/JP4217705B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2007089068A (ja) | 2007-04-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11509441B2 (en) | State prediction process and methodology | |
EP1206050B1 (en) | Radio base station apparatus and radio communication method | |
US7885619B2 (en) | Diversity transmission using a single power amplifier | |
US8190104B2 (en) | MIMO antenna apparatus changing antenna elements based on transmission capacity | |
JP4299083B2 (ja) | 無線通信装置及び無線通信方法 | |
US20160211894A9 (en) | Modal cognitive diversity for mobile communication systems | |
US8918057B2 (en) | Intelligent transmission antenna selection method and communications apparatus utilizing the same | |
JP3464606B2 (ja) | 無線通信装置及び無線通信方法 | |
US20080020802A1 (en) | Wireless receiver and wireless reception method | |
US8457582B2 (en) | Adaptive control apparatus using multiple adaptive control methods | |
EP1759470A1 (en) | Apparatus and method for beamforming in a multi-antenna system | |
CN101120520A (zh) | 校准方法和利用了它的基站装置、终端装置及无线装置 | |
KR20090051127A (ko) | 무선 통신 시스템 | |
WO2000021221A1 (fr) | Dispositif de station de base, et procédé de radiocommunications | |
US6836244B2 (en) | Radio reception apparatus capable of selecting from adaptive array reception mode and single route reception mode, and method and program for controlling adaptive array processing | |
WO2003071714A1 (fr) | Dispositif radio, systeme de communication radio et procede et programme de commande de trajets spatiaux | |
CN1332515C (zh) | 发送方法及应用该方法的无线装置 | |
US9100073B2 (en) | Wireless communications system and method | |
JP4229936B2 (ja) | 無線通信方法及び無線通信装置 | |
JP4217705B2 (ja) | 受信装置 | |
JP2000049798A (ja) | 無線通信装置 | |
US20130077511A1 (en) | System, apparatus, and method for wireless communication |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20080118 |
|
RD13 | Notification of appointment of power of sub attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7433 Effective date: 20080201 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080626 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080701 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080901 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20080901 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20081009 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20081104 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20081110 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4217705 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111114 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111114 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121114 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121114 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131114 Year of fee payment: 5 |
|
LAPS | Cancellation because of no payment of annual fees |