光纤通信用高速级联码编解码器的设计  

Design of high-speed concatenated codec for fiber communications

作　　者：胡立明[1] 张沁 胡庆生[2] 

机构地区：[1]解放军炮兵学院无人机与机械工程系,合肥230031 [2]东南大学信息科学与工程学院,南京210096

出　　处：《光通信技术》2011年第5期48-51,共4页Optical Communication Technology

摘　　要：研究了满足ITUG.975.1协议规范的高速RS-BCH级联码编解码器的设计,其中包括并行编码器、8个RS解码器和8个并行度为8的BCH解码器。采用流水线和并行技术相结合的方法提高了速度。通过解关键方程模块的共享,节省了硬件资源,实现了速度与面积的良好折中。该编解码器已在Xilinx Vertex5 FPGA上实现,并进行了测试,结果表明能够在156MHz时钟频率下稳定工作,数据率可达10Gb/s。This paper presents a high-speed concatenated RS-BCH code compatible with the protocol of ITU G.975.1,in which parallel encoder,8 RS decoders and 8 parallel 8-bit BCH decoders are included.By using parallel technology combined with pipelined strategies high speed can be achieved.In the decoder,two key-equation solvers are shared by the 8 BCH parallel decoders.Thus,the hardware resources are reduced and a good tradeoff between speed and area is obtained.The proposed concatenated codec has been implemented in Xilinx Vertex5 FPGA,and the measurement results show that the data rate can be up to 10Gb/b under the working frequency of 156MHz.

关 键 词：超强前向纠错 级联码 编解码器 RS BCH FPGA 

分 类 号：TN929.11[电子电信—通信与信息系统]