Definition - What does Evolution-Data Optimized (EV-DO) mean?
Evolution-Data Optimized (EV-DO) is a 3G wireless broadband standard that enables its users to access the Internet at higher speeds compared to the conventional 2G broadband wireless Internet technologies. EV-DO is the next further step in code division multiple access (CDMA) network standards. It provides high-speed data transmission rates ranging from 600 Kbps to 3100 Kbps. EV-DO works on radio signals and uses both CDMA and time division multiple access (TDMA) multiplexing techniques to increase the reliability and throughput of data for each individual user. The main benefit of using EV-DO wireless technology is mobile access to the Internet, such as from a moving vehicle. As an “always on” service, there is no need to switch it on to gain access. And because it is a broadband technology, it can be used to download large files or viewing live streaming video.
Due to the bandwidth transmission limitations found in CDMA networks and other 2G services such as General Packet Radio Service and Advanced GPRS, Qualcomm developed EV-DO in 1999 to implement faster wireless data networks. The basic concept behind EV-DO is similar to cellular phone communication. First, EV-DO will transmit wireless signals to a nearby tower or base station. The tower will then transmit the wireless signals to other neighbouring base stations. EV-DO devices within the area will be able to receive the signal transmission from the tower. EV-DO devices can also act as hotspots. Modems and cards can be used to provide Internet connectivity to a laptop or computer. EV-DO is only optimized for data and is not well suited for voice communication, including Voice over Internet Protocol. It is mostly deployed along with a carrier’s voice service. Its main competing technology is wireless coded vision multiple access, which has gained better support than EV-DO in Europe and Asia.