Understanding Benefits Of MIMO Technology

摘要

Multiple antenna configurations can be used to overcome the detrimental effects of signal multipath and fading when trying to achieve high data throughput in limited-bandwidth channels.rnMultiple-input, multiple-output (MIMO) antenna systems are used in modern wireless standards, including in IEEErn802.11n,3GPP LTE,andrnmobile WiMAX systems. The technique supports enhanced data throughput even under conditions of interference, signal fading, and multipath.rnThe demand for higher data rates over longer distances has been one of the primary motivations behind the development of MIMO-orthogonal-frequency-division-multiplexing (OFDM) communications systems. For years, engineers assumed that the theoretical channel capacity limits were defined by the Shannon-Hartley theorem illustrated in Eq. 1.