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该论文提出了一种通用GNSS SoC，集成了单个可重构低中频接收器、单个分数-N频率合成器和数字基带处理器，支持GPS/Galileo/Glonass/Beidou多系统同时接收，解决了传统双接收器架构复杂度高、面积大和功耗高的问题。
(GNSS) have a spectrum allocation shown in Fig. 19.4.1. The time-to-first-lock and location accuracy can be improved through simultaneous reception of two different satellite signals. This usually necessitates the use of two dedicated receivers [1] driven by a single and sometimes two separate synthesizers, which increases complexity, die area, and most importantly current consumption. To solve this problem, the architecture shown in Fig. 19.4.1 is proposed. The SoC consists of one single reconfigurable low-IF receiver, a single fractional-N frequency synthesizer, and a digital baseband processor. Since different satellite signals are uncorrelated and are buried well below the noise floor, they can be amplified and downconverted by the same
Chun Geik Tan1, Fei Song1, Tieng Yi Choke1, Ming Kong1,
De-Cheng Song1, Chee-Hong Yong1, Weimin Shu1, Zong Hua You2, Yi-Hsien Lin2, Osama Shanaa1 MediaTek, Singapore, Singapore, 2MediaTek, Hsinchu, Taiwan 1 Global Navigation Satellite Systems