multipath delay การใช้

• The research of multipath parameter estimation algorithms and accomplishing them with software . to estimate multipath parameters , multipath delays must be estimated by code filtering in advance
• In this paper , simulation of uplink and estimating channel multipath parameters in wcdma system are developed , these parameters include multipath doa ( direction of arrival ) , multipath delays and multipath amplitudes
• For the multipath delay spreading problem existing in the mobile communication systems , a parallel quadrature am data transmission system with a number of overlapping subchannels is investigated
• Then multipath doa ' s and amplitudes can be estimated by using multipath delays . besides , wmsa and delay tracing techniques are used to improve the precision of parameter estimation and the performance of the whole system is improved in some degree accordingly
• Rtce is based on forecasting the inherent vulnerabilities to propagation of hf time - varying channel , including multipath delay , doppler spread , selective fading , interference , so this paper also introduces characteristics of hf channel in the beginning . familiar rtce systems all adopt envelope method that bello brought forward