通信工程專業(yè)英語(yǔ)論文翻譯-文庫(kù)吧資料
2024-10-27 13:42本頁(yè)面
【正文】 DMA handsets offer analog capabilities which the GSM don’t offer. Another difference between GSM and CDMA is in the data transfer methods. GSM’s highspeed wireless data technology, GPRS (General Packet Radio Service), usually offers a slower data bandwidth for wireless data connection than CDMA’s highspeed technology, which has the capability of providing ISDN (Integrated Services Digital Network) with speeds as much as 144Kbps. GSM’s benefits over the CDMA in domestic purpose are that GSM uses SIM card that identifies a user and stores the information in the handset. The SIM card can be swapped between handsets, which enable to move all the contacts to the new handset with ease. CDMA can have this flexibility with their own service that stores data on the operator’s database. This service allows the user to swap data’s between two handsets with a little trouble, but the advantage is it can be done when the handset is even lost but in GSM technology, when a handset is lost, SIM card is
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