APPARATUS FOR GENERATING SOFT DECISION VALUE AND METHOD USING THE SAME

摘要

An apparatus and a method for generating a soft decision value generates the soft decision values corresponding to the level of a receiving signal outputted by a low resolution ADC by using metric values previously stored in a storage unit. Metric values computed based on the levels of the transmission signal and the output levels of ADC are received(S610). The metric values corresponding to the level of the receiving signal among the received metric values are selected(S620). When the transmission bit among the selected metric values is the first level, the maximum metric value is detected. When the transmission bit among the selected metric values is the second level, the maximum metric value is detected(S630). The soft decision value is generated based on the difference between the maximum metric value in case the transmission bit is the first level and the maximum metric value in case the transmission bit is the second level(S640).