Research on Rake Receiving Technique Based on Ground-to-air Datalink
Xianting Li · Radio Engineering of China · 2008
In general,Rake combination and demodulation are realized according t o pilot signals.For the ground-to-air communication datalink without pilot sig nals,how to realize Rake diversity reception is an issue worth depth research.T his paper presents a noncoherent solution.This solution uses the combination te chnique of serial-parallel mixed search and serial search to optimize the recei ver path search algorithm based on PN sequence code acquisition,uses the partiti on weighted method to greatly reduce the complexity of implementing receiver mul tipath combination and improve the performance of system.The simulation results show that it is an important means of overcoming channel fading and can increas e the overall performance of communication system and decrease the effects of weak area in ground-to-air communications.