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首页> 外文会议>Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services >A TDMA satellite communication system for ISDN services-offset QPSK burst modem coupled with high coding gain FEC
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A TDMA satellite communication system for ISDN services-offset QPSK burst modem coupled with high coding gain FEC

机译：用于ISDN服务偏移量QPSK突发调制解调器的TDMA卫星通信系统，结合高编码增益FEC

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The authors propose a time-division multiple-access (TDMA) satellite communication system suitable for integrated services digital network (ISDN) services for both basic interface services and primary interface services. The proposed system offers B-channel transmission lines among telephone offices and subscriber lines for basic and primary interface services. To provide these service economically and efficiently, the proposed system uses an offset QPSK burst modem coupled with high-coding gain forward-error correction in addition to demand assignment technology for each data burst and a transmitting and receiving transponder hopping TDMA scheme. Major functions of TDMA terminals have been implemented in LSICs, monolithic ICs, and hybrid ICs. The experimental results show little P/sub e/ degradation for the offset QPSK burst modem and perfect operation of the demand assignment and carrier hopping capability of the developed system.
机译：作者提出了一种时分多址（TDMA）卫星通信系统，该系统适用于同时用于基本接口服务和主接口服务的综合服务数字网络（ISDN）服务。拟议的系统为基本和主要接口服务在电话局和用户线之间提供B信道传输线。为了经济有效地提供这些服务，除了针对每个数据突发的需求分配技术以及发送和接收转发器跳变TDMA方案之外，提出的系统还使用了偏移量QPSK突发调制解调器和高编码增益前向纠错技术。 TDMA终端的主要功能已在LSIC，单片IC和混合IC中实现。实验结果表明，偏移QPSK突发调制解调器的P / sub e /降级很小，并且所开发系统的需求分配和载波跳频功能运行良好。

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