A quad-band class-39 RF CMOS receiver for evolved EDGE

2010 
The cellular mobile terminal market continues to polarize between high-end smart phones and ultra-low-cost devices, with the former providing the only growth sector during the downturn recently. A key enabler for the popular smart phones, netbooks and other mobile broadband devices has been the high data rate provided by 3G standards, especially those capable of HSPA and beyond. A good user experience, however, still crucially depends on the fallback technology mode, which in most parts of the world consists of GSM/EDGE. While the basic EDGE provides a respectable substitute where coverage of 3G is absent, an enhanced EDGE is deemed desirable by the 3GPP community to lessen the data rate disparity between HSPA and legacy EDGE. Evolved EDGE (E-EDGE) is a recent (end of 2007) standard that aims to quintuple the peak data rate of EDGE to 1.2Mb/s, by phasing in a set of additional technical features that ultimately will include higher order modulation, downlink dual carrier (DLDC), mobile station receive diversity (MSRD), higher symbol rate (level B) and reduced latency [1]. This contribution describes an RF CMOS receiver that supports E-EDGE levels A and B, MSRD, as well as DLDC multi-slotting up to class 39.
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