Error correction strategies for wireless ATM

Abstract

Forward error correction coding (FEC) is a widely used method to improve transmission quality in modern communication systems. This paperpresents some aspects on the application of advanced error correction con cepts to recent wireless ATM developments. The target bit error rate and the mapping of the wireless connection quality to the ATM service classes are discussed. Some considerations on the issue of code selection with respect to block size, scalability, complexity and performance are presented. We propose methodsfor comparing the performance of codes at the example of various convolutional codes and Reed-Solomon codes. The impact of the radio environment on the FEC codes is addressed and the code performance is evaluated by simulations using a Gilbert Elliott channel model.