RAKE Reception in CDMA Systems with Multi-Path Combining Algorithms

This implementation demonstrates RAKE reception in CDMA systems and compares the performance of three combining algorithms: Maximum Ratio Combining (MRC), Equal Gain Combining (EGC), and Selection Combining (SC). The system configuration includes 3 multipath components, each delayed by half a chip duration relative to the previous path. The source input employs 16-bit Walsh codes for spreading operations. In code implementation, the RAKE receiver structure would typically involve: - Channel estimation to determine multipath gains and delays - Finger assignment for each multipath component - Correlation receivers for each finger using delayed versions of spreading codes - Combining logic implementing MRC (weighting by SNR), EGC (equal weighting), and SC (selecting strongest path) The simulation could further optimize reception algorithms by incorporating adaptive threshold techniques, exploring advanced multipath combining schemes like interference cancellation, and implementing dynamic finger management to enhance system performance and reliability under varying channel conditions.