Reduced-Complexity Code Synchronization in Multipath Channels for BOC Modulated CDMA Signals with Applications in Galileo and Modernized GPS Systems (2009)
Abstract / truncated to 115 words
Applications for the new generations of Global Navigation Satellite Systems (GNSS) are developing rapidly and attract a great interest. Both US Global Positioning System (GPS) and European Galileo signals use Direct Sequence-Code Division Multiple Access (DS-CDMA) technology, where code and frequency synchronization are important stages at the receiver. The GNSS receivers estimate jointly the code phase and the Doppler spread through a two-dimensional searching process in time-frequency plane. Since both GPS and Galileo systems will send several signals on the same carriers, a new modulation type - the Binary Offset Carrier (BOC) modulation, has been selected. The main target of this modulation is to provide a better spectral separation with the existing BPSK-modulated GPS signals, ... toggle 5 keywordsBOC – GNSS – DS-CDMA – sidelobe cancellation – code synchronizaion
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