Abstract
The 802.11ac WLAN standard can provide wireless throughput up to several Gbps by employing wide signal bandwidth, high-order modulation, and multi-user MIMO. However, these new physical layer characteristics bring significant challenges in RF transceiver design. In this paper, system-level simulation platform based on 802.11ac standard is constructed, and error vector magnitude (EVM) degradation due to various RF front-end circuits imperfections, such as IQ mismatch (IQM), local oscillator (LO) phase noise (PN), carrier frequency offset (CFO), and power amplifier nonlinearity, are simulated and elaborated. This work provides RF designers with comprehensive system-level and component-level overviews of 802.11ac RF transmitters for Gbps wireless communications on a pre-silicon base.
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