Description: 由于Turbo码在接近Shannon极限的低信噪比下仍然能够获得较低的误码率，所以在近几年已成为编码理论界研究的热门领域，在第三代移动通信系统的开发中，Turbo码被普遍认为是高速数据信道的纠错编码方式。现在人们对Turbo码的主要研究包括编码器、交织器的设计及软输入、软输出迭代译码的算法。-This kind of codes has given rise to a large interest in the coding theory because of the can still aehieve small bit error rate at low SNR close to the Shannon capacity limits.In the development of the third generation mobile communieation systems，it is well kllown that Turbo codes are the way of correct coding of high-speeding data channel. The researeh of Turbo codes includes the design of the encoder，the illterleaver and soft-out/soft-in iterative decoding algorithm. Platform: |
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Author:陈吉伟 |
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Description: Near-Optimal Selection Of Transmit Antennas For A Mimo Channel Based On Shannon Capacity Platform: |
Size: 130048 |
Author:zhou min qi |
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Description: 信息论是由通信技术、概率论、随机过程和数理统计等相结合逐步发展而形成的一门新兴科学。其奠基人是美国数学家香农，他的《通信的数学原理》奠定了信息论的基础。
这是信息论与编码技术的教学课件。压缩包内含有6个ppt文件，每个ppt自成一章:1绪论、2信源及其熵、3信道及其容量、4信息率失真函数、5信源编码、6信道编码。是初学信息论的最好材料。-Information communication technology is, probability theory and mathematical statistics, stochastic processes, such as the combination formed by the progressive development of an emerging science. The founders of the United States Shannon mathematician, his " Mathematical Theory of Communication" has laid a foundation of information theory. This is the information theory and coding technology courseware. Compressed packet contains 6 ppt documents, each a separate chapter ppt: 1 Introduction, 2 source and its entropy, and its 3-channel capacity, information rate-distortion function 4, 5, source coding, channel coding 6. Information theory is the best learning materials. Platform: |
Size: 3452928 |
Author:yuan |
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Description: shannon capacity and Symbol Error Rate估计，此程序是调试过的，比较实用于衰减信道。-shannon capacity and Symbol Error Rate is estimated that this program is to debug with,and the more practical in the fading channel. Platform: |
Size: 81920 |
Author:wangjun |
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Description: We investigate the case of independent Rayleigh faded paths between antenna elements and find that with
high probability extraordinary capacity is available. Compared to the baseline n = 1 case, which by Shannon’s
classical formula scales as one more bit/cycle for every 3 dB of signaltonoise
ratio (SNR) increase, remarkably
withMEAs, the scaling is almost like n more bits/cycle for each 3 dB increase in SNR. To illustrate how great this
capacity is, even for small n, take the cases n = 2, 4 and 16 at an average received SNR of 21 dB. For over 99
of the channels the capacity is about 7, 19 and 88 bits/cycle respectively, while if n = 1 there is only about 1.2
bit/cycle at the 99 level. For say a symbol rate equal to the channel bandwith, since it is the bits/symbol/dimension
that is relevant for signal constellations, these higher capacities are not unreasonable. The 19 bits/cycle for n = 4
amounts to 4.75 bits/symbol/dimension while 88 bits/cycle for n = 16 amounts to 5.5 bits/symbol/dimension. Platform: |
Size: 396288 |
Author:greg |
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Description: 离散对称信道的信道容量的计算是香农信息论一个很重要的方面-Discrete symmetric channel is the channel capacity is calculated by the Shannon information theory is a very important aspect Platform: |
Size: 100352 |
Author:至尊宝 |
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Description: 文章详细介绍了TPC编码技术及信道容限， 是一篇不错的介绍TPC的文章-An important goal for a new communication system is to transfer information at a high rate while
keeping energy consumption low. Shannon s channel capacity sets a limit on the tradeoff between the rate
of information transfer and the required energy. In this paper the performance of turbo block coding is
compared to Shannon s limit for binary communications over a channel with thermal noise. The turbo
product code is a relatively new code that offers a wide range of flexibility in terms of performance,
complexity, and code rate. The results of this paper will show that in comparison to a standard
convolutional code the turbo product code uses less power and permits a higher data rate for a given
bandwidth requirement. One of the turbo product codes discussed in this paper has a rate approximately
0.8, which is a 60 improvement in data rate over the standard convolutional code. It is also shown that
the performance of the turbo product code is close to Shannon s capacity limit Platform: |
Size: 68608 |
Author:大海 |
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Description: 关于渐进香农容量极限的好码构造以及译码分析性能资料，对初学者很有帮助。-Shannon capacity limit on the progressive good performance of code construction and decoding of information helpful for beginners. Platform: |
Size: 1692672 |
Author:yxc |
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Description: Besides calculating the SER verses Eb/No for the various levels of QAM, The m-file shows the coding gain required to closely approach Shannon s channel capacity limit for 4QAM,16QAM,64QAM,256QAM and 1024QAM. Notes are given at the end of the m-file Platform: |
Size: 870400 |
Author:metalex89 |
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Description: Breaking the Barriers of Shannon’s Capacity: An Overview of MIMO Wireless Systems
Author: DAVID GESBERT AND JABRAN AKHTAR Platform: |
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Author:Hien |
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Description: Iterative Solutions is committed to the mission of developing accurate and efficient software for the simulation of modern communication systems. All software is licensed as open source software under the Lesser GPL. The code is designed to run in matlab, though the compute-intensive portions are written in C and Java. A wide variety of error control codes are supported, including turbo and LDPC codes, and an emphasis is placed on nonbinary modulation formats such as QAM and nonbinary continuous-phase FSK. The software goes beyond the usual error rate analysis by including tools for determining the Shannon capacity of arbitrary modulation formats.-Iterative Solutions is committed to the mission of developing accurate and efficient software for the simulation of modern communication systems. All software is licensed as open source software under the Lesser GPL. The code is designed to run in matlab, though the compute-intensive portions are written in C and Java. A wide variety of error control codes are supported, including turbo and LDPC codes, and an emphasis is placed on nonbinary modulation formats such as QAM and nonbinary continuous-phase FSK. The software goes beyond the usual error rate analysis by including tools for determining the Shannon capacity of arbitrary modulation formats. Platform: |
Size: 1024 |
Author:rizwan |
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Description: 关于注水算法的简单演示。在总功率受限的情况下通过功率分配逼近香农信道容量-performs the water filling algorithm with the given total power constrain to approach Shannon capacity of the channel. Platform: |
Size: 1024 |
Author:harold |
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