SYSTEM AND METHOD OF IN-BAND MODEM FOR DATA COMMUNICATIONS OVER DIGITAL WIRELESS COMMUNICATION NETWORKS

PROBLEM TO BE SOLVED: To provide a system for transmitting information through a speech codec (in-band), e.g., found in a wireless communication network.SOLUTION: A modulator transforms data into a spectrally noise-like signal on the basis of mapping of a shaped pulse to predetermined positions with...

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Bibliographic Details
Main Authors CHRISTIAN SGRAJA, WOLFGANG GRANZOW, MARC W WERNER, LEUNG NIKOLAI K N, HUANG PENGJUN, CHRISTIAN PIETSCH, CHRISTOPH A JOETTEN
Format Patent
LanguageEnglish
Japanese
Published 12.03.2015
Subjects
ACOUSTICS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:PROBLEM TO BE SOLVED: To provide a system for transmitting information through a speech codec (in-band), e.g., found in a wireless communication network.SOLUTION: A modulator transforms data into a spectrally noise-like signal on the basis of mapping of a shaped pulse to predetermined positions within a modulation frame, and the signal is efficiently encoded by a speech codec. A synchronization sequence provides modulation frame timing at a receiver and is detected based on analysis of a correlation peak pattern. A request/response protocol provides reliable transfer of data using message redundancy, retransmission, and/or robust modulation modes dependent on the communication channel conditions. 【課題】ワイヤレス通信ネットワークにおいて見られるような、音声コーデック（インバンド）によって情報を送信するためのシステムを提供する。【解決手段】変調器は、変調フレーム内の所定位置への整形されたパルスのマッピングに基づいてデータをスペクトル的に雑音様の信号に変換し、その信号は、音声コーデックによって効率的に符号化される。同期シーケンスは、受信機において変調フレームタイミングを与え、相関ピークパターンの分析に基づいて検出される。要求／応答プロトコルは、通信チャネル状態に依存してメッセージ冗長性、再送信、および／またはロバスト変調モードを使用してデータを確実に転送する。【選択図】図１
Bibliography:Application Number: JP20140205055