LTE-advanced and 4G wireless communications

摘要

The Release-10 LTE-Advanced (LTE-A) is a major enhancement of the Long Term Evolution (LTE) standard developed by the 3rd Generation Partnership Project (3GPP). LTE-A was ratified by the International Telecommunication Union (ITU) as an IMT-Advanced (fourth generation, 4G) technology in November 2010. The 4G objective is to meet challenges presented by the ever increasing use of ??smart?? wireless devices that require significantly higher spectral resources than conventional cell phones. LTE-A addresses those challenges by targeting peak data rates up to 1 Gb/s with up to 100 MHz supported spectrum bandwidth and by making use of high-order multiple-input multiple-output (MIMO) transmission with up to eight spatial layers on the downlink and four spatial layers on the uplink.