Advanced differentially non-coherent code acquisition in jamming and data modulation
P. Pirhonen, Tapani Ristaniemi · 2003
We consider differentially non-coherent code tinting acquisition in direct-sequence code-division multiple access (DS-CDMA) communication system. An advanced method for differentially non-coherent acquisition, DC-MUSIC, was proposed and noticed to combine the benefits of both conventional differentially non-coherent matched filter and traditional MUSIC estimator in a meaningful way. We evaluate DC-MUSIC in the presence of tone jamming and data modulation. Especially, we study the effects of imperfect removal of data modulation. This is crucial for any differentially coherent/non-coherent acquisition schemes, since they exploit temporal correlation of signals. Simulation results are presented.