高速语音波段数据调制解调器的多级代码

IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond Pub Date : 1989-11-27 DOI:10.1109/GLOCOM.1989.64280

A. Ushirokawa, H. Matsui

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引用次数: 3

摘要

为了实现高编码增益，提出了一种新型的多电平码。从码的系统设计角度研究了由两级码组成的多级码。作为分量码的两级码在编码增益和解码器延迟方面优于传统的一级码的组合。对于19.2 kb/s的语音调制解调器应用，该方案提供了一种优于栅格编码调制的编码调制，同时实现了高编码增益、低/中等解码器复杂度和短解码延迟。

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Multilevel codes for high-speed voiceband data modem

A novel class of multilevel codes is proposed for achieving high coding gain. Multilevel codes composed of two-level codes are investigated from the standpoint of the systematic design of codes. Two-level codes as component codes are shown to be preferable to a combination of conventional one-level codes in coding gain and decoder delay. For a 19.2 kb/s voiceband modem application, this scheme presents a class of coded modulation superior to trellis-coded modulation in simultaneous realization of high coding gain, low/moderate decoder complexity, and short decoding delay.<>

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来源期刊

IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond

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