JPH0226840U - - Google Patents
Info
- Publication number
- JPH0226840U JPH0226840U JP10555188U JP10555188U JPH0226840U JP H0226840 U JPH0226840 U JP H0226840U JP 10555188 U JP10555188 U JP 10555188U JP 10555188 U JP10555188 U JP 10555188U JP H0226840 U JPH0226840 U JP H0226840U
- Authority
- JP
- Japan
- Prior art keywords
- gain control
- circuit
- control circuit
- spread spectrum
- spectrum communication
- 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 4
- 238000012935 Averaging Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
Description
第１図はこの考案の一実施例によるスペクトル
拡散通信用ＡＧＣ回路を示すブロツク図、第２図
は従来のスペクトル拡散通信用ＡＧＣ回路のブロ
ツク図である。
図において、３は利得制御回路、２１はデイジ
タルマツチドフイルタを用いたロード捕捉回路、
２２は平均化回路、２３は変換回路、２４は利得
制御電圧発生回路である。なお、図中、同一符号
は同一または相当部分を示す。
FIG. 1 is a block diagram showing an AGC circuit for spread spectrum communication according to an embodiment of this invention, and FIG. 2 is a block diagram of a conventional AGC circuit for spread spectrum communication. In the figure, 3 is a gain control circuit, 21 is a load acquisition circuit using a digital matched filter,
22 is an averaging circuit, 23 is a conversion circuit, and 24 is a gain control voltage generation circuit. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
たスペクトル拡散通信用復調器において、前記コ
ード捕捉回路の相関値出力を平均化する手段と、
この平均化された相関値を受信波のＣ／Ｎ比に変
換する手段と、このＣ／Ｎ比を用いて後記利得制
御回路出力の信号レベルが常に一定となる様な利
得制御電圧を発生する回路と、この利得制御電圧
により受信波の利得が制御される利得制御回路と
を備えたスペクトル拡散通信ＡＧＣ回路。 In a demodulator for spread spectrum communication equipped with a code acquisition circuit using a matted filter, means for averaging the correlation value output of the code acquisition circuit;
Means for converting this averaged correlation value into a C/N ratio of the received wave, and using this C/N ratio, a gain control voltage is generated such that the signal level of the output of the gain control circuit described later is always constant. A spread spectrum communication AGC circuit comprising a gain control circuit and a gain control circuit in which the gain of a received wave is controlled by the gain control voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10555188U JPH0226840U (en) | 1988-08-09 | 1988-08-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10555188U JPH0226840U (en) | 1988-08-09 | 1988-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0226840U true JPH0226840U (en) | 1990-02-21 |
Family
ID=31338267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10555188U Pending JPH0226840U (en) | 1988-08-09 | 1988-08-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226840U (en) |
-
1988
- 1988-08-09 JP JP10555188U patent/JPH0226840U/ja active Pending