Constrained Turbo Decoding with Bit Based Early Detection

摘要：

In this paper, we propose a symbol based early detection method and a constrained turbo decoding algorithm to reduce the turbo decoding complexity, but without performance degradation. By incorporating a trend watch on the extrinsic values of individual bits with a threshold detection, some correctly decoded bits can be observed early. This information is further exploited to constrain the decoding along the trellis so that the decoding of other bits can be improved with reduced complexity. Simulation demonstrates the promising performance of this algorithm. An interesting result is that the trend watch plays a more important role in determining those early decoded bits. Therefore, the complexity in determining the optimal thresholds can be avoided and the load of detection process is very small.

作者: Huijun Chen Lei Cao

作者单位: Department of Electrical Engineering University of Mississippi University, MS, 38677-3437, USA Department of Electrical Engineering University of Mississippi University, MS, 38677, USA

会议类型: 国际会议

会议名称: 2006 International Conference on Communications,Circuits and Systems(第四届国际通信、电路与系统学术会议)

会议地点: 广西桂林

会议语种:英文

页码: 717-722

在线出版日期: 2006-06-25（万方平台首次上网日期，不代表论文的发表时间）