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We present in this article an industry-first multi-com RFIC, combining a dual-band 802.11n radio (WiFi) and a triple-band 802.16e (WiMAX) radio on the same die. The WiFi radio supports up to 3 ?? 3 MIMO rank, and the WiMAX radio supports up to 1 ?? 2 MIMO. This highly-integrated direct-conversion RFIC features an integrated fractional-N synthesizer, non-harmonic frequency generation, integrated LNAs...
In this letter, a compact envelope-memory polynomial based model, suitable for forward and reverse modeling of weakly nonlinear wireless transmitters and power amplifiers (PAs) exhibiting electrical memory effects, is presented. This model is implemented in a complex gain based architecture and takes advantage of the dependency of PA nonlinearity on the magnitude of the input signal. Contrary to conventional...
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