AFE, data converter in mobile wireless terminals

Mobile broadband wireless communication systems use several techniques for improving spectral efficiency. To achieve high data rates, yield optimal system capacity, and ensure reliable quality of service (QoS), modern wireless communication systems use variable channel bandwidths (BW = 1.25MHz to 20MHz) with high-order modulation (16QAM to 64QAM) and code-division or orthogonal frequency-division multiple access (CDMA, OFDMA) as well as scalable, smart antenna technology (e.g., multiple-input multiple-output or MIMO, spatial diversity).

High-speed and low-speed data converters have critical functions in modern broadband mobile radios. This application note outlines how to determine high-speed data converter performance requirements in base band sampling radio architectures. Also, system partition strategies and advantages are outlined when considering a high-speed analogue front-end (AFE) solution.

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Originally published by Maxim Integrated Products Inc.at www.maximintegrated.com as "Navigate the AFE and Data-Converter Maze in Mobile Wireless Terminals".