Implementation of a WCDMA Rake Receiver on a TMS320C62xE DSP Device Wireless ASP Products ABSTRACT A number of techniques can be used to search for the paths in a wideband code division multiple access (WCDMA) digital signal processor (DSP) radio. Overall, the millions of instructions per second (MIPS) required to do this search are approximately 2% of the brute force approach used in a code division multiple access (CDMA) search of application-specific integrated circuit (ASIC) devices. The search is performed at a level of power where a DSP-based rake receiver can be implemented and reception can be improved. This 100-MHz engine searches for paths and receives data using a 6-finger rake receiver at 58 MHz, thereby implementing a complete rake receiver on a single TMS320C62xE DSP device. =====================================================================
