JP6200234B2 - 信号評価装置 - Google Patents
信号評価装置 Download PDFInfo
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- JP6200234B2 JP6200234B2 JP2013162205A JP2013162205A JP6200234B2 JP 6200234 B2 JP6200234 B2 JP 6200234B2 JP 2013162205 A JP2013162205 A JP 2013162205A JP 2013162205 A JP2013162205 A JP 2013162205A JP 6200234 B2 JP6200234 B2 JP 6200234B2
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- 238000011156 evaluation Methods 0.000 title claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000006866 deterioration Effects 0.000 description 2
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Description
10 模擬ヘッドエンド部
11 所望波用変調器
12 干渉波用変調器
13 干渉波生成部
14 混合器
15 分配器
16 増幅器
17 終端抵抗
131 第1周波数変換部
132 BPF(バンドパスフィルタ)
133 分配器
134−1〜134―N 第2周波数変換部
135−1〜135―N LPF(ローパスフィルタ)
136−1〜136―N 遅延器
137−1〜137―N 出力電力制御部
138 遅延量制御部
20 模擬伝送路部
21 室間ケーブル
22 分配器
23 増幅器
24 復調器
25 終端抵抗
Claims (3)
- 所定の変調方式で変調された1波の変調波信号から複数の干渉変調波信号を生成する干渉波生成部と、
所定の変調方式で変調された所望変調波信号と、前記複数の干渉変調波信号とを混合して混合変調波信号を生成する混合器と、
伝送路及び復調器を有する模擬伝送路部であって、該伝送路を通過した前記混合変調波信号を該復調器で復調して、前記混合変調波信号の伝送特性を評価する模擬伝送路部と
を備え、
前記干渉波生成部は、
入力された前記1波の変調波信号を、第1周波数帯から第2周波数帯に周波数変換する第1周波数変換部と、
前記第2周波数帯に変換された前記1波の変調波信号を、N―1本の変調波信号に分配する第1分配器と、
前記N―1本の変調波信号を、前記第2周波数帯から前記第1周波数帯の所望する干渉波周波数に変換するN−1個の第2周波数変換部と、
前記第1周波数帯に変換された前記N―1本の変調波信号を、それぞれ異なる遅延量で遅延させてN−1本の干渉変調波信号を生成するN−1個の遅延器と
を備える信号評価装置。 - 前記模擬伝送路部は、さらに、第2分配器及び増幅器を有し、前記伝送路は室間ケーブルであることを特徴とする、請求項1に記載の信号評価装置。
- 前記所定の変調方式は、ASK、PSK、QAM、APSK又はOFDMを含むことを特徴とする、請求項1又は2に記載の信号評価装置。
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JP2013162205A JP6200234B2 (ja) | 2013-08-05 | 2013-08-05 | 信号評価装置 |
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Publications (2)
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JP2015033031A JP2015033031A (ja) | 2015-02-16 |
JP6200234B2 true JP6200234B2 (ja) | 2017-09-20 |
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JP2013162205A Active JP6200234B2 (ja) | 2013-08-05 | 2013-08-05 | 信号評価装置 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109391284B (zh) * | 2017-08-10 | 2022-07-12 | 中兴通讯股份有限公司 | 一种信号转换、信号耦合设备及无线网络覆盖系统 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH032716U (ja) * | 1989-05-31 | 1991-01-11 | ||
JP3017012B2 (ja) * | 1993-04-13 | 2000-03-06 | 日本無線株式会社 | 増幅装置の試験装置 |
JP3376269B2 (ja) * | 1998-02-27 | 2003-02-10 | 日本電信電話株式会社 | 通信性能評価装置 |
JP2002064804A (ja) * | 2000-08-18 | 2002-02-28 | Dx Antenna Co Ltd | 共同受信システムの異常検知装置 |
JP5193833B2 (ja) * | 2008-12-08 | 2013-05-08 | 日本放送協会 | デジタル信号の送信装置 |
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