Doppler RAKE detection in fast-fading environment

The conventional RAKE detection of the code division multiple access (CDMA) system exploits multi-path diversity, but is only optimal in slow- fading scenarios. For fast-fading environments, where Doppler effect has a significantly detrimental impact on detection, the Doppler-RAKE receiver, which jointly exploits time and frequency diversity, is being researched as one possible solution. We further develop the system in several aspects to ameliorate its performance, while considering the trade-offs between its improved effects and the increased complexity of the algorithms.