| 单词 | 1xEV-DO (one carrier EVolution-Data Optimized) |
| 释义 | 1xEV-DO (one carrier EVolution-Data Optimized) A high data rate (HDR) version of Code Division Multiple Access 2000 (CDMA2000) that employs 16-QPSK modulation in support of a peak data rate of 2.4 Mbps on the downlink and 153 kbps on the uplink. In a fully loaded cell, 1xEV-DO supports average aggregate throughput of 4.1 Mbps on the downlinks and 660 kbps on the uplinks. 74570cintro.qxd 9/11/07 12:17 PM Page 7 |
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