基于TI高速DSP协处理器VCP的TD-SCDMA系统信道译码的设计与实现
esign and Implementation of Channel Decoding in TD-SCDMA System Based on VCP Coprocessor in TI High-Speed DSP
3GPP中TD-SCDMA系统采用卷积编码方式对语音和低速信令进行信道编码，如何正确译码并提高译码效率是系统正确进行信号处理时至关重要的一步。本文提出一种新的快速信道译码的方案，利用TI公司定点DSP芯片TMS320C6416中内嵌的VCP协处理器实现快速卷积译码，VCP协处理器采用Viterbi译码算法。本文首先介绍了VCP译码原理，然后在DSP硬件平台上实现了符合3GPP标准的译码过程，最后利用Matlab进行仿真，给出不同信噪比条件下的误码率。仿真结果证明VCP译码具备优越的译码性能。
he TD-SCDMA system in 3GPP uses convolutional encoding for voice and low-speed signal and how to decode correctly and efficiently thus plays a necessary and important role in the signal processing. This paper introduces a new decoding method---realizing decoding based on the VCP coprocessor embedded in Texas Instruments' TMS320C6416 DSP device, which uses the Viterbi decoding algorithm. In this paper, the decoding principle has been introduced and the VCP decoding process corresponding to the 3GPP standard has also been realized in the platform of DSP. With the help of Matlab, the BER of different SNR has been calculated, which proves the excellent decoding capability of VCP.
吴慧敏、陈杰
通信无线通信
通信与信息系统-SCDMASPVCP维特比译码
ommunication and Information SystemTD-SCDMADSPVCPViterbi Decoding
吴慧敏,陈杰.基于TI高速DSP协处理器VCP的TD-SCDMA系统信道译码的设计与实现[EB/OL].(2011-10-21)[2025-08-11].http://www.paper.edu.cn/releasepaper/content/201110-206.点此复制
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