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于 2011-09-05 发布 文件大小:201KB
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  为了提高MIMO-OFDM系统的数据传输率和频谱利用率,提出一种新的自适应算法。该算法在保证信道质量所需误码率和总发射功率的前提下,按照各个子载波衰落程度动态地分配比特和功率,使系统的总数据传输速率最大。理论分析得出,该算法降低了系统运算复杂度,能很大地改善系统的整体性能。(In order to improve data transmission rates and spectrum efficiency of MIMO-OFDM systems,this paper proposes a new adaptive algorithm. While the channel transmission quality to meet the requirements of a certain target BER(bit error rate) and total emissive power,according to each sub-carrier decline degree to adjust each sub-carrier modulation method freely,try to minimize the total data rate of system. Theory analysis shows the algorithm can reduce system complexity and improve overall performance of the ...)

文件列表:

基于MIMO_OFDM系统的自适应算法研究.pdf,260960,2011-09-05

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    2021-03-18 15:39:20下载
    积分:1
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    积分:1
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    积分:1
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    2016-04-02 23:10:30下载
    积分:1
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    D2D通信matlab仿真,基于matlab的D2D设备到设备通信系统模型仿真(Simulation of D2D Communication with MATLAB)
    2018-11-30 12:02:31下载
    积分:1
  • vij1
    function ber_ml=Alamoudi(snr,soglia) This function simulates a Alamouti scheme. The input variables are soglia and snr. Soglia: is the number of errors after which the iterations stop. For better results, put high value of soglia, but the simulation is longer. snr: the signal to noise ratio (if u don t know what is a signal to noise ratio, well, come back to your high school!). Note: U should use this function with a main function in wich u chose different value of snr. That s because this function work just with one value of snr. If u have problem with this code, write me at m.allegritti@email.it. Take care! Max
    2010-02-06 17:26:08下载
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  • OFDM_Channel-estimation
    OFDM(正交频率调制)实现多载波调制基本思想是将带宽信道分解成许多并行的窄子信道,是每个子信道的想干带宽,从而实现平稳衰落。搭建了完整的OFDM信道链路系统,运用三种不同的信道估计方法(LS信道估计、DFT信道估计、Improved-DFT信道估计),并对AWGN理想信道和衰落信道误码情况进行了仿真和比较。(OFDM (Orthogonal Frequency Modulation) multicarrier modulation basic idea bandwidth channel is decomposed into a number of parallel narrow subchannels, each subchannel wanted bandwidth, in order to achieve a smooth fading. Build a complete OFDM channel link system, the use of three kinds of different channel estimated method (LS channel estimated, to the DFT letter Tao estimates, Improved-the DFT letter Road estimated), and AWGN ideal letter Road and fading channel bit error situation conducted a simulation and comparison .)
    2012-10-17 10:56:16下载
    积分:1
  • Noma-master
    说明:  提供了一个研究NOMA,如何NOMA解决了5G需求、NOMA正在进行的标准化工作以及NOMA与其他应用程序的比较研究像OFDMA这样的OMA方案。我们还展示了NOMA中用户吞吐量的改进在MATLAB仿真的帮助下实现OFDMA。(This paper provides a study of NOMA, how NOMA addresses the 5G requirements, ongoing standardization efforts for NOMA and a comparative study of NOMA with other OMA schemes like OFDMA. We have also demonstrated improvements in the throughput of the users in NOMA as compared to OFDMA with the help of MATLAB simulations.)
    2021-01-13 16:08:43下载
    积分:1
  • 201112
    一篇关于四桥臂有源电力滤波器关键技术研究的文章(research on the key issues of the four-leg active power filter)
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