期刊名称：Journal of Theoretical and Applied Information Technology
印刷版ISSN：1992-8645
电子版ISSN：1817-3195
出版年度：2013
卷号：47
期号：2
页码：702-706
出版社：Journal of Theoretical and Applied
摘要：Modern wireless communication standard varies a lot from each other and is evolving rapidly. Flexibility becomes the dominate consideration of software defined radio (SDR) system design. Reconfigurable platform is preferred in the SDR due to the reuse of hardware. Convolutional code is widely adopted in many wireless protocols but the code parameter differs. In order to support multi-standard service, a decoder compatible for different protocols is needed. In this paper, we designed a flexible Viterbi decoder which is compatible with WiMAX, UMB and LTE�s channel coding scheme. High efficient cascaded Add-compare-select unit architecture and sliding window method for trace back are presented. Meanwhile, conflict free memory access model is also given. FPGA prototype shows our design is highly flexible while maintaining a high throughput with low area cost compared to others.
关键词：Viterbi Decoder; Flexible Architecture; Software Defined Radio
