JPH01124730U - - Google Patents
Info
- Publication number
- JPH01124730U JPH01124730U JP2110688U JP2110688U JPH01124730U JP H01124730 U JPH01124730 U JP H01124730U JP 2110688 U JP2110688 U JP 2110688U JP 2110688 U JP2110688 U JP 2110688U JP H01124730 U JPH01124730 U JP H01124730U
- Authority
- JP
- Japan
- Prior art keywords
- spreading code
- signal
- correlator
- receiving
- transmission
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims 3
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図はこの考案の一実施例によるスライデイ
ング相関器の構成図、第２図は第１図のスライデ
イング相関器の中の加算器の出力信号の自己相関
を示す図、第３図は従来のスライデイング相関器
の構成図である。
４〜６……拡散符号発生器、１８……加算器。
FIG. 1 is a block diagram of a sliding correlator according to an embodiment of this invention, FIG. 2 is a diagram showing the autocorrelation of the output signal of the adder in the sliding correlator of FIG. 1, and FIG. FIG. 2 is a configuration diagram of a conventional sliding correlator. 4 to 6...Spreading code generator, 18...Adder.
Claims (1)
号とで変調して送信し、受信側にて受信信号から
前記送信用拡散符号を除去し、データ信号のみを
得るスペクトル拡散通信に用いられ、前記送信用
拡散符号に同期した受信用拡散符号を受信側にて
再生するスライデイング相関器において、位相が
相互に１／Ｎ周期ずつずれた受信用拡散符号を発
生するＮ組の拡散符号発生器と、前記Ｎ組の拡散
符号発生器の出力信号を加算して被加算信号を出
力する加算器と、前記受信信号と前記被加算信号
とを比較する相関器とを具備する事を特徴とする
スライデイング相関器。 The transmission side modulates a carrier wave with a data signal and a transmission spreading code and transmits the signal, and the receiving side removes the transmission spreading code from the received signal to obtain only the data signal. In a sliding correlator that reproduces a receiving spreading code synchronized with a transmitting spreading code on the receiving side, N sets of spreading code generators generate receiving spreading codes whose phases are mutually shifted by 1/N period. , an adder that adds the output signals of the N sets of spreading code generators and outputs an augend signal; and a correlator that compares the received signal and the augend signal. Riding correlator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2110688U JPH01124730U (en) | 1988-02-19 | 1988-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2110688U JPH01124730U (en) | 1988-02-19 | 1988-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01124730U true JPH01124730U (en) | 1989-08-24 |
Family
ID=31238041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2110688U Pending JPH01124730U (en) | 1988-02-19 | 1988-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01124730U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04181117A (en) * | 1990-11-15 | 1992-06-29 | Nippon Boshoku Kogyo Kk | Device for measuring water-depth position and potential of a metal structure under water surface |
| WO1995007577A1 (en) * | 1993-09-06 | 1995-03-16 | Ntt Mobile Communications Network Inc. | Sliding correlation detector |
| JPH08316878A (en) * | 1995-05-23 | 1996-11-29 | Nec Corp | Synchronization acquisition device for spread spectrum communication system and synchronization acquisition method |
| US7706332B2 (en) | 1995-06-30 | 2010-04-27 | Interdigital Technology Corporation | Method and subscriber unit for performing power control |
| US7903613B2 (en) | 1995-06-30 | 2011-03-08 | Interdigital Technology Corporation | Code division multiple access (CDMA) communication system |
| US7929498B2 (en) | 1995-06-30 | 2011-04-19 | Interdigital Technology Corporation | Adaptive forward power control and adaptive reverse power control for spread-spectrum communications |
| US8737363B2 (en) | 1995-06-30 | 2014-05-27 | Interdigital Technology Corporation | Code division multiple access (CDMA) communication system |
-
1988
- 1988-02-19 JP JP2110688U patent/JPH01124730U/ja active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04181117A (en) * | 1990-11-15 | 1992-06-29 | Nippon Boshoku Kogyo Kk | Device for measuring water-depth position and potential of a metal structure under water surface |
| WO1995007577A1 (en) * | 1993-09-06 | 1995-03-16 | Ntt Mobile Communications Network Inc. | Sliding correlation detector |
| JPH08316878A (en) * | 1995-05-23 | 1996-11-29 | Nec Corp | Synchronization acquisition device for spread spectrum communication system and synchronization acquisition method |
| US7706332B2 (en) | 1995-06-30 | 2010-04-27 | Interdigital Technology Corporation | Method and subscriber unit for performing power control |
| US7903613B2 (en) | 1995-06-30 | 2011-03-08 | Interdigital Technology Corporation | Code division multiple access (CDMA) communication system |
| US7929498B2 (en) | 1995-06-30 | 2011-04-19 | Interdigital Technology Corporation | Adaptive forward power control and adaptive reverse power control for spread-spectrum communications |
| US8737363B2 (en) | 1995-06-30 | 2014-05-27 | Interdigital Technology Corporation | Code division multiple access (CDMA) communication system |
| US9564963B2 (en) | 1995-06-30 | 2017-02-07 | Interdigital Technology Corporation | Automatic power control system for a code division multiple access (CDMA) communications system |
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