【摘要】 介绍了一种适用于TD-SCDMA系统链路的Viterbi译码方法,并利用CCS集成环境平台和TMS320C55X DSP芯片实现了仿真分析。文中介绍了维特比译码的原理、算法及维特比译码实现的过程。通过对经典Viterbi译码算法的理解及优化,编写出了针对TD-SCDMA手机终端的Viterbi译码DSP程序,同时在CCS环境下给出了硬件的仿真结果。由分析及测试结果表明,该设计程序在运行周期上得到了很大的优化,系统译码的效率也很高。更多还原

【Abstract】 it introduces a special Viterbi decoding approach to the TD-SCDMA system link. We implement the Viterbi decoding with TMS320C55X chips under the environment of CCS. It introduces the principle and arithmetic of the Viterbi, the process of its’im-plementation as well. after understanding the classical decoding arithmetic well, we optimized it and wrote out the Viterbi decoding DSP program, which is for the TD-SCDMA cellphone linking system particularly. I simulated the result based on the hardware at the same time.compared with the common program , the cycle of this one was optimized a lot. According to the simulation results , the efficiency of this decoding system is very high.更多还原