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3G 数据传输介绍--Free
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类别: 消费电子
时间:2020-04-07
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3G_Data_Lesson_Pre-introCDMA 3G Data and Capacity Overview Pre-lesson introduction NORTEL NETWORKS CONFIDENTIAL CDMA 3G Data and Capacity Overview - February, 2001 Issue 1.8 0 CDMA Solution Profiles 1G 2G CDMA 3G Data and Capacity Solutions (1xRTT) IS-2000 cdma2000 1.25 MHz High Speed Packet Data (up to 144 kbps) 3G Analog Voice IS-95 cdmaOne 1.25 MHz Wireline Quality Digital Voice Circuit Data Direct Spread/ Multi-carrier Mobile Multimedia (2 Mbps) High Capacity Mobile Voice + Mobile High Speed Packet Data Enabling true mobile multimedia 1 Benefits of the cdma2000 1xRTT Standards Increased mobile standby battery life (via Quick Paging Channel) Total backward compatibility to reuse switch and call processing features 2-3 dB better coverage High speed 153.6 kbps packet data capabilit……
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