x_msg = (sign(randn(1,size(G,1)))+1)/2; % random bits x_code_msg= mod(x_msg*G,2); % coding in=x_code_msg; x_tx_msg= QAM64m(in); % 16QAM modulation real_tx=real(x_tx_msg); imag_tx=imag(x_tx_msg); waveform= x_tx_msg+sqrt(variance)*( randn(size(real_tx)) + ...
The decoder outputs a decoded code word(624) by decoding a received code word vector(624) during the decoding.HONGHWANGKIM, HYUN-JUNG
一、了解AAC: AAC是Advanced Audio Coding简写,即高级音频编码,其压缩后的音质效果比MP3要好,是目前主流的音频压缩格式。AAC单独编码出来的流后缀为aac或者m4a(iPhone等产品)。AAC有两种数据传输格式:ADIF和ADTS。ADIF:整个流数据仅含有一个文件描述头,必须从头的明确定义处开始解析,适合本地播放文件;ADTS:每一个pac...
lCoding Rate = 1/3 lCoding Rate = 1/2 lCoding Rate = 5/6 从图4、图5和图6可以看出,在编码率为1/3时,存在一些比编码率为5/6时性能损失更大的缺点。然而,在编码率为5/6时,有更多的波动点。在图5中,与Polar码相比,LDPC码在所有信息长度上都有大约1dB的性能损失。 结论是:为了支持细粒度,LDPC...
which can reduce the system complexity. By simplifying the main algorithm of coding and modulation, the amount of computation was reduced. Finally, the simulation of the system was given. The result shows that, with the same channel condition and bit error rate, the design has a lower transmit...
x_code_msg= mod(x_msg*G,2); % coding in=x_code_msg; x_tx_msg= QAM64m(in); % 16QAM modulation real_tx=real(x_tx_msg); imag_tx=imag(x_tx_msg); waveform= x_tx_msg+sqrt(variance)*( randn(size(real_tx)) + randn(size(imag_tx))*i ) ; % AWGN transmission ...
cotructionparity-checkmatrixencodingmethodbasedparity-checkmatrix.AnalyzerapidlycodingmethodLDPCcode.decodingalgorithm,MPdecodingmethod,BPdecodingmethod,Min-Sumdecodingmethod,Bit-FlippingmethodWeightedBit-Flippingmethoddiscussed.EmulateLDPCcodesdecodingmethodsarticlefocusesdecodingalgorithmsLDPCcodes,Accordingdifferentmethods...
的影响。 即在以上公式中依次分别拿掉: , 然后,再送到 的计算公式中 ---例子结束 整体示意流程图如下: [1] Error Correction Coding--Mathematical Methods and Algorithms , Todd K. Moon, Wiley, 2005 ,主要参考第 15.5 章节。
A fast simulator and a library dedicated to the channel coding. library multi-threading cpp simulation mpi decoding multithreading turbo reed-solomon fec polar error-correcting-codes polar-codes ldpc-codes ldpc turbo-codes channel-coding forward-error-correction bch turbo-product-codes Updated Jul 29...
编解码器(endcoding name):opus 时钟频率即采样率(clock rate):48000 音频通道数(encoding...