Coherent synchronization of code division multiple access signals

摘要

A new method and apparatus is disclosed for improving the performance of a constellation of multiple transponder platforms (106, 108) serving a number of subscribers (102, 112) in the same service area. The method incorporates a coherent processing technique for synchronizing the phase of CDMA signals arriving at a subscriber (102) from multiple transponder platforms (106, 108) to increase the code capacity for most of the multiple transponder platform systems in current use (Fig. 1).