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Get the skinny on OFDM, MIMO

Posted: 16 May 2008     Print Version  Bookmark and Share

Keywords:OFDM  MIMO  WiMAX  LTE 

The wireless industry, although perpetually evolving, is currently in an unprecedented state of transition. The emerging 4G air interfaces, including WiMAX, LTE, UMB, 802.20, WiBro and next-generation PHS and the like, all share certain common features: all are based on Orthogonal Frequency Division Multiple Access (OFDMA); all exploit Multiple Input Multiple Output (MIMO); and all have "flattened architecture" and are based on Internet Protocol.

This article focuses on OFDMA and MIMO in the context of a software-defined (flexible) architecture, describing how to implement the core DSP algorithm of OFDMA and the novel variant used by LTE for the uplink, then briefly discussing the use of MIMO for both WiMAX and LTE.

View the PDF document for more information.

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