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[Communication] PhDThesisforLDPC DL : 1: 硕士学位论文:LDPC码在瑞利衰落信道中的性能分析信道编码技术可以带来编码增益，节省宝贵的功率资源，己经成为现代数字通信系统中必不可少的关键技术。LDPC码采用低复杂度的迭代译码算法，且具有逼近香农限的性能.由于LDPC码具有诸多优点，它在信息可靠传输中的良好应用前景己经引起学术界和rr业界的高度重视，成为当今信道编码领域最受瞩目的研究热点之一。本文主要探讨了LDPC码在瑞利衰落信道中的性能，基于LDPC码的分组空时码系统，以及基于LDPC码的正交频分复用系统.-master's degree thesis : LDPC codes in Rayleigh fading channels Performance Analysis channel coding technology can bring coding gain, Power saving valuable resources have become modern digital communication systems essential to the critical technologies. LDPC low complexity of the iterative decoding algorithm, having approximation Shannon limit performance. Because LDPC has many advantages, It reliable transmission of information in the application of good prospects has been caused rr academia and industry are taking, become the channel coding areas of the most watched one of the hot spots. This paper mainly discusses the LDPC Rayleigh fading channels in the performance Based on LDPC a space-time coding system, and based on LDPC orthogonal frequency division multiplexing system.
Date : 2008-10-13 Size : 2.25mb User : daniel
[Communication] GetPCM DL : 0: PCM通道数据采集，可以把Codec与DSP间的PCM数据流保存成一个文件，再用CoolEdit分析，从而得到Codec和DSP的增益信息和频率信息。-PCM channel data acquisition, Codec and DSP can be among the PCM data stream into a file save, and then CoolEdit analysis, thus Codec and DSP gain information and frequency information.
Date : 2025-12-31 Size : 36kb User : pancat
[Communication] ZF DL : 0: The use of space-division multiple access (SDMA) in the downlink of a multiuser multiple-input, multiple-output (MIMO) wireless communications network can provide a substantial gain in system throughput. The challenge in such multiuser systems is designing transmit vectors while considering the co-channel interference of other users. Typical optimization problems of interest include the capacity problem - maximizing the sum information
Date : 2025-12-31 Size : 1kb User : uuk