A SYSTEM AND METHOD FOR ADJUSTING AMPLITUDE OF THE CHANNEL DECODED DATA IN CDMA SYSTEM

摘要

The present invention discloses a system and method for adjusting the amplitude of the data for channel decoding in the CDMA system; said system includes: a DPCCH channel compensation and merge module, a DPCCH channel estimation module , a DPDCH amplitude adjustment factor computation module, and a DPDCH compensation and merge as well as amplitude adjustment module, wherein, after the DPDCH amplitude adjustment factor computation module receives the compensated and merged physical control channel data, it obtains the relationship between the DPDCH data amplitude and the DPCCH data amplitude based on the radio link parameters of DPCCH and DPDCH; estimates the DPDCH data amplitude based on the DPCCH data amplitude; then divides the input data amplitude required by channel decoding by said estimated data amplitude to obtain the adjustment factor; the DPDCH channel compensation and merge as well as amplitude adjustment module performs channel compensation and multi-path merging function for DPDCH de-spreading data by using the DPDCH channel estimation value, and the merged data immediately multiplies said adjustment factor to adjust the amplitude. The present invention can reduce the memory consumption during the computation of the amplitude adjustment, and can distribute the computation load evenly so as to contribute to the system stability.