contents chapter ⅰbasic communication knowledge/基础通信知识 unit 1digital representation of information/信息的数字描述 unit 2multimedia information and system/多媒体信息与系统 unit 3communication system/通信系统 unit 4computer system/计算机系统 unit 5computer network/计算机网络 unit 6communication channel/通信信道 unit 7history of communication technology/通信技术的历史 chapter ⅱcommunication technologies/通信技术 unit 8fdm tdm pcm/频分复用时分复用脉冲编码调制 unit 9mobile communication/移动通信 unit 10optical fiber/光纤通信 unit 11satellite communication/卫星通信 unit 12wireless communication/无线通信
