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LDPC码的和积算法，码长可以任意，输出多项式即可，译码输出软信息-Sum-product algorithm for LDPC codes, code length can be arbitrary, the output polynomials can be, decoder outputs soft information
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LDPC码在基于BP (Belief Propagation) 的迭代译码相结合的条件下具有逼近Shannon 限的性能，是继turbo 码后在纠错编码领域又一重大进展。压缩文件中给出了LDPC在高斯信道下的c程序。-LDPC codes based on BP (Belief Propagation) Iterative Decoding of combining conditions with performance approaching Shannon limit on the heel
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采用LDPC编码对随机的二进制序列进行纠错编码和基带调制，在AWGN信道上进行传输，然后在接收端并采用合适的方式进行解调和译码，最后对纠错编码的性能加以分析。-LDPC codes using random binary sequence of error-correcting coding and base-band modulation, for transmission in the AWGN channel, and then at the receiving end and use t
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Error Correction Coding
（Mathematical Methods and Algorithms）
关于纠错码算法很全的一本书 （奇偶检测，turbe码，LDPC等）-provide a comprehensive introduction to error correction
coding, including both classical block- and trellis-based codes and the recent develo
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Study of LDPC Codes
This paper is a brief study of a specific type of forward error correction code known as low density parity check code. We also study its decoding technique which makes it suitable for transmitting a message over a noisy transmi
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HARQ技术研究，以喷泉码为研究对象，结合LDPC纠错码而研究的。-HARQ technology research to fountain codes for the study, and research combined with LDPC error correction code.
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Low-density parity-check (LDPC) codes are forward error-correction codes,
first proposed in the 1962 PhD thesis of Gallager at MIT. At the time, their
incredible potential remained undiscovered due to the computational demands
of simulation in
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Concatenated coding schemes were first proposed by Forney [1] as a method for
achieving large coding gains by combining two or more relatively simple buildingblock or component codes(sometimes called constituent codes). The resulting
codes had the
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