JPH01139645U - - Google Patents
Info
- Publication number
- JPH01139645U JPH01139645U JP3489788U JP3489788U JPH01139645U JP H01139645 U JPH01139645 U JP H01139645U JP 3489788 U JP3489788 U JP 3489788U JP 3489788 U JP3489788 U JP 3489788U JP H01139645 U JPH01139645 U JP H01139645U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- spread
- carrier wave
- spread spectrum
- signals
- 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
- 238000001228 spectrum Methods 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 9
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 1
Description
第１図Ａ，Ｂは本考案のスペクトル拡散通信装
置の一実施例の夫々変調部及び復調部のブロツク
構成図、第２図Ａ，Ｂは櫛歯形フイルタの周波数
特性図、第３図Ａ〜Ｅは本考案装置の各構成部分
の動作説明用周波数スペクトル図、第４図はスペ
クトル拡散信号波形図、第７図は搬送波再生回路
の一構成例を示すブロツク図、第６図は従来のス
ペクトル拡散通信装置を実現する通信装置の基本
ブロツク構成図、第７図は第６図示のブロツク図
の各構成部分におけるスペクトル波形図である。
１，２６……ＬＰＦ（低域波器）、２〜６…
…乗算器、７〜９……加算器、１０……変調部、
１１……拡散符号発生回路、１２……櫛歯形フイ
ルタ、１３……遅延回路、１４……減算器、１５
〜１９……ＢＰＦ（帯域板器）、２０……復調
部、２１，２２……情報信号復調回路、２３……
位相同期ループ、２４……1/2分周・移相回路、
２５……搬送波再生回路、Ｉｎ１〜Ｉｎ５……入
力端子、Ｏｕｔ１〜Ｏｕｔ２……出力端子。
1A and 1B are block configuration diagrams of a modulation section and a demodulation section, respectively, of an embodiment of the spread spectrum communication device of the present invention, FIGS. 2A and 2B are frequency characteristic diagrams of a comb-shaped filter, and FIGS. E is a frequency spectrum diagram for explaining the operation of each component of the device of the present invention, FIG. 4 is a spread spectrum signal waveform diagram, FIG. 7 is a block diagram showing an example of the configuration of a carrier wave regeneration circuit, and FIG. 6 is a conventional spectrum diagram. FIG. 7 is a basic block configuration diagram of a communication device realizing a spread communication device, and FIG. 7 is a spectrum waveform diagram of each component of the block diagram shown in FIG. 1, 26...LPF (low frequency filter), 2-6...
... Multiplier, 7 to 9 ... Adder, 10 ... Modulation section,
11... Spreading code generation circuit, 12... Comb filter, 13... Delay circuit, 14... Subtractor, 15
~19... BPF (bandwidth plate device), 20... demodulation section, 21, 22... information signal demodulation circuit, 23...
Phase-locked loop, 24...1/2 frequency division/phase shift circuit,
25...Carrier regeneration circuit, In1 - In5 ...input terminals, Out1 - Out2 ...output terminals.
補正 昭６３．５．３０
図面の簡単な説明を次のように補正する。
明細書の第２０頁第３行の「第７図」を「第５
図」と補正する。Amendment May 30, 1983 The brief description of the drawings is amended as follows. “Figure 7” on page 20, line 3 of the specification has been replaced with “Figure 5.”
Correct it to ``Figure''.
Claims (1)
ＳＫ変調して１次変調波信号を得る手段と、該第
１の搬送波とは異なる周波数の第２の搬送波を入
力して該１次変調波信号との加算信号を得る手段
と、拡散符号信号により上記加算信号を拡散変調
して複合スペクトル拡散信号を得る手段とを備え
、 復調側には、上記複合スペクトル拡散信号を入
力して、上記１次変調波信号が拡散されている第
１のスペクトル拡散信号と上記第２の搬送波が拡
散されている第２のスペクトル拡散信号とを分離
検出する手段と、該分離検出された両信号を乗算
により逆拡散する手段と、該逆拡散によつて得ら
れた２つのＰＳＫ信号より情報信号を夫々復調す
る手段と、該復調された２つの情報信号を加算し
て出力する手段とを備えて構成したことを特徴と
するスペクトル拡散通信装置。[Claims for Utility Model Registration] On the modulation side, the first carrier wave is
means for obtaining a primary modulated wave signal through SK modulation; means for inputting a second carrier wave having a different frequency from the first carrier wave to obtain a signal added to the primary modulated wave signal; and a spreading code signal. means for obtaining a composite spread spectrum signal by spread modulating the added signal by means of a demodulation side, the demodulation side inputting the composite spread spectrum signal to generate a first spectrum in which the primary modulated wave signal is spread. means for separately detecting a spread signal and a second spread spectrum signal in which the second carrier wave is spread; means for despreading the separated and detected signals by multiplication; and means for despreading the separated and detected signals by multiplication; What is claimed is: 1. A spread spectrum communication device comprising means for demodulating information signals from two PSK signals, and means for adding and outputting the two demodulated information signals.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3489788U JPH01139645U (en) | 1988-03-16 | 1988-03-16 | |
| US07/313,259 US4977578A (en) | 1988-02-19 | 1989-02-21 | Spread spectrum communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3489788U JPH01139645U (en) | 1988-03-16 | 1988-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01139645U true JPH01139645U (en) | 1989-09-25 |
Family
ID=31261566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3489788U Pending JPH01139645U (en) | 1988-02-19 | 1988-03-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01139645U (en) |
-
1988
- 1988-03-16 JP JP3489788U patent/JPH01139645U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4943976A (en) | Spread spectrum communication system | |
| JPS6093861A (en) | Frequency modulator of electric communication carrier by base band signal | |
| JPH0646032A (en) | Spread spectrum communication system | |
| JPS6347307B2 (en) | ||
| JPS58112979U (en) | A device that controls the phase of the carrier wave and sideband waves generated by a transmitter. | |
| JPH01139645U (en) | ||
| US4220818A (en) | AM Stereo transmitter | |
| US3971999A (en) | Coherent phase demodulator for phase shift keyed suppressed carrier signals | |
| US4489430A (en) | FM Stereo demodulation circuit | |
| KR970007873B1 (en) | Bpsk demodulation circuit | |
| JP2776623B2 (en) | Modified duobinary SSB modulator | |
| JPH057196A (en) | Spread spectrum modulation/demodulation system | |
| JP3115251B2 (en) | AM data multiplexed modulated wave signal demodulation circuit | |
| JP3316232B2 (en) | MSK modulation circuit | |
| SU1596467A1 (en) | Device for transceiving single-band phase-modulated signals with frequency spacing | |
| Tretter et al. | Single-Sideband Modulation and Frequency Translation | |
| JPH06120990A (en) | Orthogonal modulation circuit | |
| JPS6338140B2 (en) | ||
| JPH0226841U (en) | ||
| JPS61224763A (en) | Demodulating circuit for four-phase dpsk wave | |
| JPS60196049A (en) | Carrier recovery circuit | |
| JPH11136162A (en) | Band compression circuit | |
| JPS6130849A (en) | Demodulation circuit of 4-phase psk wave in time division multiplex signal | |
| JPH06232839A (en) | Spread spectrum receiver | |
| JPH05199205A (en) | Demodulator for synchronous spread spectrum modulated wave |