QPSKCode = QPSKEncode(ConCode, Length);%QPSK调制 SNR = 1: 1 : 5; error=zeros(Frame,length(SNR)); fork = 1:length(SNR) RecCode = awgn(QPSKCode,SNR(k),'measured');%给信号加噪 DQPSKCode = QPSKDecode(RecCode, Length);%
[10] TRABER M.A low power survivor memory unit for sequential Viterbi-decoders[C].Circuits and Systems,ISCAS 2001,2001 IEEE International Symposium on,2001,4:214-217. [11] BAEK J G,YOON S H,CHONG J W.Memory efficient pipelined Viterbi decoder with look-ahead trace back[C].Electronics,Ci...
The invention relates to a Viterbi decoder for decoding a convolutional code. Branch metrics are normalized, state metrics are calculated from the normalized branch metrics, and the synchronization and asynchronization are determined on the basis of the degree of increase in the calculated state ...
To learn more about HDL support for the Viterbi Decoder block see the HDL Code Generation section of the block page in documentation. To open the model, run this command in the MATLAB Command Window: Get open_system('hdlcoder_commviterbi'); In this model, the top-level subsystem Viterbi...
The comm.ViterbiDecoder System object™ uses Viterbi algorithm to decode convolutionally encoded input symbols to produce binary output symbols. A trellis structure specifies a convolutional encoding scheme. For more information, see the Trellis Description of a Convolutional Code topic. Create the comm...
文档 快速参考 User Manual 下载 Downloadable IP 标题编号版本日期格式文件大小 a选择全部 aaBlock Convolutional Encoder IP Core User's Guide IPUG3103.56/28/2010PDF1.5 MB aaBlock Viterbi Decoder IP User's Guide IPUG3202.76/28/2010PDF736.5 KB
I am using fec encoding followed by viterbi decoding. In this process, I observed that the viterbi decoder error correction capability doesn't go hand in hand with theoretical calculations. For example, in this case, I am using 1/2 rate convolutional encoder for encoding. Theoretically, for 1...
Abstract :Vit erbi decoding algorit hm is an opti mal decoding al gori t hm for co nvol utional code.A hi gh speed (3,1,7)Vit erbi decoder ,which incl ude s B MU ,A CSU ,SMU a nd CU ,i s designed a nd i mple ment ed.The Vit erbi decoder i s impl ement ed and ...
The System object represents the HDL implementation of the Viterbi decoder in this simulation system. The object's interface is common for all simulators. As a convenience to avoid writing some HDL testbench code, we generate waveforms for the clocks and resets using simulator-specific Tc...
8、gh these results the Viterbi decoders correctness and practicability can be validated.Key words: Convolutional Code; Viterbi; Viterbi; FPGA绪 论5.第一章 纠错码的基本原理 7.1.1 差错控制的基本方式 7.1.2 纠错编码的基本原理8.1.3 纠错编码的分类 10第二章卷积码和Viterbi算法122.1 卷积码基础 1.22...