BASEBAND PROCESS METHOD BASED ON DOUBLING SAMPLING

摘要

A baseband process method based on doubling sampling is disclosed. The method includes the following steps: subjecting the received signal to the root raised cosine-filtering process; sampling said signal; conducting channel estimation for every user based on the sampled data; conducting multi-user joint detect demodulation for said data. According to the method, the step of sampling said signal includes the following steps: conducting doubling sampling for said signal, the sampling interval is 1/2 chip; selecting the average value of the two sample value as sample value of the chip; grouping the sample value of every chip as data stream. According to the invention, in the case that the computing complexity is not increased and the memory space is only doubled, the gain of the received signal in the system is improved, especially when the signal synchronization is poor. The system delay is reduced. The quality of real time is increased. And the method is suitable to the mobile communication system in bad communication environment.