Patent ID: 8054904
Filing Date: 2011-11-08
Classification: H04B,H04L

Abstract:
1. A partial iterative detection and decoding apparatus in a Multiple Input Multiple Output (MIMO) system, comprising: a detector for detecting signals received through at least one receive antenna and generating a first soft decision value; a decoder for generating a second soft decision value by decoding the first soft decision value; and a switch for connecting the decoder and the detector in order to feedback a MIMO symbol having a low level of reliability under control of a reliability determiner and for disconnecting the detector from the decoder so as not to feedback a MIMO symbol having a high level of reliability, wherein the reliability determiner selects a signal from a plurality of signals to be iteratively detected and decoded by using the second soft decision value, wherein the reliability determiner compares a reference value with a variation of log likelihood ratios of the first soft decision value and the second soft decision value, and determines to perform the iterative detection and decoding process on a signal containing a bit having a log likelihood ratio that is greater than the reference value.