Targeted Signal Fast Acquisition Algorithm in Third-party Detection System in WCDMA
Zengshan Tian · Video Engineering · 2013
According to the real-time requirements of third-party detection systems capturing uplink RACH in WCDMA system,the deficiency of traditional algorithm is analyzed and a kind of fast capturing preamble algorithm is designed that combining energy accumulation and maximum likelihood.Aiming at the feature of message frame structure,a kind of frequency offset estimation algorithm based on the control part in PRACH message is designed.The targeted identification acquirement algorithm is made up of the algorithm of fast capturing preamble and frequency offset estimation algorithm based on the control part in PRACH message.Real data validation shows that this algorithm can capture and decode the PRACH message of targeted user quickly and accurately.