JPH11506584A - Cdma伝送採用クリッピング機能 - Google Patents
Cdma伝送採用クリッピング機能Info
- Publication number
- JPH11506584A JPH11506584A JP8536784A JP53678496A JPH11506584A JP H11506584 A JPH11506584 A JP H11506584A JP 8536784 A JP8536784 A JP 8536784A JP 53678496 A JP53678496 A JP 53678496A JP H11506584 A JPH11506584 A JP H11506584A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- cdma
- sum signal
- power
- clip
- 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.)
- Ceased
Links
Classifications
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
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Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Human Computer Interaction (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.複数のチャンネルから,CDMA信号に対し拡散機能を行い, 複数のチャンネルのCDMA信号をコンバインしてサム信号をつくり, 前記サム信号を.期待されたしきい値範囲の上下を移動することによりクリップ 信号をつくるステップからなるCDMA信号の処理方法。 2.CDMA信号はサム信号を決定するために使われる非有効値,パワーマグニ チュード値,およびパワーディレクション値を有する請求項1記載の方法。 3.パワーマグニチュード値は,オンフック状態を意味する第1のレベルと,オ ンフック状態を意味する第2のレベルを有する請求項1記載の方法。 4.移動されたサム信号の部分は,クリップアウトプット信号上にノイズ生産サ イドバンドが現れるのを防ぐに十分なものである請求項1記載の方法。 5.サム信号は.非有効値0,1/4のパワーマグニチュード値,ポジティブま たはネガティブのパワーディレクション値に対応して−64から+64の範囲に わたる請求項2記載の方法。 6.前記しきい値範囲はサム信号の全範囲の約1/2である請求項1記載の方法 。 7.さらに,ラジオ周波数キャリア伝送信号を変調するため,サム信号を2つの 別々のデータチャンネルにコンバートし,各2つの別々にされたデータチャンネ ルは,半値幅パルス構成にて情報を保有し,最初半分のパルスは,有効情報を, 次の半分のパルスはリターントゥゼロフォーマットを有するステップからなる請 求項1記載の方法。 8.さらに,期待された周波数バンド幅の外に移動するため2つの別々のデータ チャンネルをフィルターするステップからなる請求項7記載の方法。 9.9次のベッセルロウパスフィルターによって行われるフィルタリングのステ ップの請求項8記載の方法。 10.フィルタリングステップは各半値幅パルスの間のインターシンボルインタ ーフィアランスを減少させるのに十分なプロパティを有する請求項8記載の方法 。 11.複数のチャンネルからCDMA信号の拡散機能を行い, 複数のチャンネルのCDMA信号をコンバインさせ,サム信号をラジオ周波数キ ャリア伝送信号を変調させるためサム信号を2つの別々のデータチャンネルに変 換し,2つの別々のデータチャンネルのそれぞれは半値幅のパルス構成で情報を 持ち,最初半分のパルスは,有効情報を,次の半分のパルスはリターントゥゼロ フォーマットを有するステップからなるCDMA信号の処理方法。 12.さらに,2つの別々のデータチャンネルを期待されたラジオ周波数バンド 幅の外へインタフィアレンスを移動するためにフィルタリングするステップから なる請求項11記載の方法。 13.フィルタリングのステップは,9次のベッセルロウパスフィルタリングオ ペレーションによって行われる請求項12記載の方法。 14.フィルタリングステップは,各半値幅パルスの間のインターシンボルイン ターフィアランスを減少させるのに十分なプロパティを有する請求項12記載の 方法。 15.クリップ信号をつくるため,期待されたしきい値の上下を移動するステッ プからなる請求項11記載の方法。 16.CDMA信号はサム信号を決定するために使われる非有効値,パワーナグ ニチュード値,およびパワーディレクション値を有する請求項15記載の方法。 17.パワーマグニチュード値は,オンフック状態を意味する第1のレベルと, オンフック状態を意味する第2のレベルを有する請求項16記載の方法。 18.移動されたサム信号の部分は,クリップアウトプット信号上にノイズ生産 サイドバンドが現れるのを防ぐに十分なものである請求項15記載の方法。 19.サム信号は,非有効値0,1および4のパワーマグニチュード値,ポジテ ィブまたはネガティブのパワーディレクション値に対応して−64から+64の 範囲にわたる請求項16記載の方法。 20.前記しきい値範囲は約サム信号の全範囲の1/2である請求項15記載の 方法。 21.CDMA信号を処理するため, 複数のチャンネルからCDMA信号をコンバインすることのできるサマーサーキ ット,これからサム信号を発生させることのできるサマーサーキット, サム信号の部分を期待されたしきい値範囲の上下に移動させることのできるク リッピングサーキット,これからクリップ信号を発生させることのできるクリッ ピングサーキット, クリップ信号を半値幅符号化フォーマットにコンバートさせることのできるデ ジタル・アナログ処理サーキット,信号パルスの最初半分に情報を保有し,信号 パルスの次の半分には情報を保有しない半値幅符号化フォーマット,半値幅符号 化フォーマットの中のクリップ信号をアナログ信号に変換することのできるデジ タル・アナログ処理サーキット, アナログ信号において,インターシンボルインターフィアランスを減少させる ことのできるフィルター, とからなるCDMA信号処理装置。 22.フィルターは,1つのシンボルから次のシンボルへのロールオフを取り除 くため,9次のベッセルロウパスフィルタリングオペレーションを行う請求項2 1記載の装置。 23.クリッピングサーキットは,クリップアウトプット信号上にノイズ生産サ イドバンドが現れるのを防ぐに十分なサム信号の部分を移動する請求項21記載 の装置。 24.各CDMA信号は,非有効値,パワーマグニチュード値,またはサム信号 を決定するのに使用するパワーディレクション値,並びに非有効値0,1および 4のパワーマグニチュード値,ポジティブまたはネガティブのパワーディレクシ ョン値に対応して−64から+64の範囲にわたるサム信号,並びにサム信号の 全範囲の約1/2の期待されたしきい値範囲を有する請求項23記載の装置。
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9510870.0 | 1995-06-02 | ||
| GB9510870A GB2301751B (en) | 1995-06-02 | 1995-06-02 | Control message transmission in telecommunications systems |
| GB9511546A GB2301736B (en) | 1995-06-02 | 1995-06-07 | Apparatus and method of controlling transmitting power in a subscriber terminal of a wireless telecommunications systems |
| GB9511546.5 | 1995-06-07 | ||
| GB9513388.0 | 1995-06-30 | ||
| GB9513388A GB2301753A (en) | 1995-06-02 | 1995-06-30 | Processing CDMA signals |
| PCT/US1996/008500 WO1996038944A1 (en) | 1995-06-02 | 1996-06-03 | Cdma transmission employing clipping function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11506584A true JPH11506584A (ja) | 1999-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8536784A Ceased JPH11506584A (ja) | 1995-06-02 | 1996-06-03 | Cdma伝送採用クリッピング機能 |
Country Status (9)
| Country | Link |
|---|---|
| US (2) | US5742595A (ja) |
| EP (1) | EP0829150B1 (ja) |
| JP (1) | JPH11506584A (ja) |
| CN (1) | CN1194071A (ja) |
| AU (1) | AU710839B2 (ja) |
| BR (1) | BR9609468A (ja) |
| CA (1) | CA2222734C (ja) |
| DE (1) | DE69629465T2 (ja) |
| WO (1) | WO1996038944A1 (ja) |
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-
1996
- 1996-06-03 DE DE69629465T patent/DE69629465T2/de not_active Expired - Lifetime
- 1996-06-03 JP JP8536784A patent/JPH11506584A/ja not_active Ceased
- 1996-06-03 CA CA002222734A patent/CA2222734C/en not_active Expired - Fee Related
- 1996-06-03 CN CN96195270A patent/CN1194071A/zh active Pending
- 1996-06-03 BR BR9609468A patent/BR9609468A/pt not_active Application Discontinuation
- 1996-06-03 EP EP96917034A patent/EP0829150B1/en not_active Expired - Lifetime
- 1996-06-03 WO PCT/US1996/008500 patent/WO1996038944A1/en not_active Ceased
- 1996-06-03 AU AU59728/96A patent/AU710839B2/en not_active Ceased
-
1998
- 1998-04-20 US US09/063,232 patent/US6366570B1/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003527780A (ja) * | 1999-08-31 | 2003-09-16 | インターデイジタル テクノロジー コーポレーション | 適応型rf増幅器前置リミタ |
Also Published As
| Publication number | Publication date |
|---|---|
| AU5972896A (en) | 1996-12-18 |
| AU710839B2 (en) | 1999-09-30 |
| DE69629465T2 (de) | 2004-07-01 |
| CA2222734A1 (en) | 1996-12-05 |
| US6366570B1 (en) | 2002-04-02 |
| CN1194071A (zh) | 1998-09-23 |
| CA2222734C (en) | 2002-12-17 |
| BR9609468A (pt) | 1999-03-02 |
| EP0829150B1 (en) | 2003-08-13 |
| WO1996038944A1 (en) | 1996-12-05 |
| US5742595A (en) | 1998-04-21 |
| DE69629465D1 (de) | 2003-09-18 |
| EP0829150A1 (en) | 1998-03-18 |
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