Estimation of in-cell and out-of-cell interference levels for improved CDMA forward link error correction
نویسندگان
چکیده
This work uses the second order statistics of the signal received by a CDMA mobile to determine what proportion of that signal consists of in-cell interference and what proportion is out-of-cell interference plus thermal noise. A least-squares estimator is derived and compared to the Cramer-Rao Lower Bound. The interference estimates are incorporated into the CDMA mobile channel decoder in order to improve the performance of convolutional and turbo codes on the CDMA forward link.
منابع مشابه
Improved forward link error correction for CDMA systems with space time transmit diversity
Abstmct-The channel code decoder in a CDMA mobile not accounted for the non-stationary in-cell interference performs channel state estimation to determine the reli-that occuTs on a CDMA fonvard link using concatenated WalshjPN sequence spreading. CDMA forward link chan-ability of each received encoded symbol. This reliability information is typically an estimate of received signal envelope and ...
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