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The design of systems with enhanced Quality of Service (QoS) and improved power efficiency has evolved into an intensive research area in wired and wireless communications engineering. Orthogonal Frequency Division Multiplexing (OFDM) has been proven to have the potential to achieve high data rates, adapt to severe channel conditions and exhibit spectral efficiency; this has gained its popular support in the design industry, especially for Fourth Generation (4G) systems. However, the high Peak to Mean Envelope Power Ratio (PMEPR) exhibited by OFDM signals require linear operation of analog devices, with the associated trade-off of poor power efficiency.
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