Improving convolutional and turbo code performance on the CDMA forward link

This work improves turbo and convolutional channel code performance on the CDMA forward link by providing the mobile channel decoder with more accurate estimates of the signal to noise plus interference ratio (SNIR) of each received symbol. The SNIR estimates are improved by separately accounting for the in-cell interference and out-of-cell interference plus thermal noise processes at the mobile Rake receiver output. Simulations are used to illustrate that this technique significantly improves channel code performance, particularly in hotspot scenarios.