A quick clarification
1. Going strictly by ITU’s IMT-Advanced definition, only LTE-Advanced (Releases 10 and 11) and WiMAX 2.0 (IEEE 802.16m) can be considered as 4G services. These are not yet operational anywhere in the world. We can expect to see the first deployments only by the year-end or in 2013. Countries like India, China, Japan and Brazil have deployed LTE (Releases 8 and 9) in recent months. Many players in the telecom industry tend to accept this as 4G as it uses multi-carrier OFDM technology and can be considered a major jump in technology and user/operator experience.