To achieve the goal of high performance and flexibility,a parameterized multi-standard adaptive radix-4 Viterbi decoder based on the field-programmable gate array was presented.This decoder adopts constraint lengths ranging from 3 to 9,code rates of 1 /2 or 1 /3 and supports error-correcting decoding of arbitrary truncation lengths.The unsigned quantization,add-compare-select unit optimization and normalization judgment logic separation strategies were used to optimize the design of critical path,so that it can improve system throughput.Experiment results show that:the decoder can change the structures according to the parameters set by users and achieve dynamic switching in multiple communication standards;the throughput can reach up to 541 Mbps,apparently superior to the related works;the decoder achieves low bit error ratio in multiple standards such as GPRS,WiMax,LTE,CDMA and 3G and satisfies the decoding requirements of multiple communication standards.%为了同时达到高性能和灵活性的目标，提出一种基于现场可编程门阵列的参数化多标准自适应基4 Viterbi 译码器。译码器采用3～9可变约束长度，1／2、1／3可变码率，支持任意截断长度的纠错译码，并采用码字无符号量化、加比选单元设计优化和归一化判断逻辑分离策略优化关键路径设计，提高译码器工作频率。实验结果表明，该译码器能根据用户设定的参数改变结构，在多种通信标准之间实现动态切换；性能达到了541 Mbps，明显优于相关工作；对 GPRS，WiMAX，LTE，CDMA，3G 等通信标准都取得了良好的误码性能，可满足多种通信标准的译码需求。
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