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[matlab] Chapter3 DL : 0: (书)现代通信系统使用MATLAB第三章-ALLIANCES is a recently proposed cooperative random access protocol for wireless networks. In this paper we modify the original model to include user location information. We also derive pair-wise error probability (PEP) under Rayleigh flat fading channel and a power-law attenuation environment. Based on the PEP analysis we propose an optimal relay selection scheme, which achieves significant throughput gains as compared to the random relay selection scheme in the original ALLIANCES.
Update : 2025-02-17 Size : 20kb Publisher : 史志举
[matlab] 081105 DL : 0: 基于MATLAB的组合模型在港口吞吐量预测中的应用以某港1998--2007年集装箱吞吐量为实测数据，建立其集装箱吞吐量的灰色理论、三次指数平滑、三次多项式等预测模型，在MATLAB下，对比该港集装箱吞吐量各模型预测拟合值与实际值的差异。分析了差异产生的原因及其单一预测模型的局限性，提出了港口集装箱吞吐量组合预测法。其预测误差明显低于其它单模型。运用组合预测模型．可以降低误差。提高预测精度。-A combination of MATLAB-based model in port throughput prediction of a Hong Kong 1998- 2007 container throughput for the measured data, the establishment of its container throughput of the gray theory, the three exponential smoothing, prediction models, such as cubic polynomial in MATLAB, the contrast of the Hong Kong container throughput of fitting the models to predict the value of the difference between the actual value. Analysis of the causes of differences and the limitations of a single prediction model, the combination of port container throughput prediction. Its prediction error was significantly lower than other single model. The use of combination forecasting model. Can reduce the error. Improve the prediction accuracy.
Update : 2025-02-17 Size : 145kb Publisher : 张学利
[matlab] calcSAthrouputSNR DL : 0: calculate throughput of a slotted aloha network with an SNR requirement
Update : 2025-02-17 Size : 2kb Publisher : Russ
[Program doc] MU-MIMO-technique DL : 0: 文档中介绍首先介绍了多用户MIMO模型，以及LTE中的多用户MIMO方案，通过仿真分析总结出当用户数较少时，在高信噪比条件下，ZF方案的系统吞吐量性能明显优于PU2RC方案。-Document describes first introduced a model of a multi-user MIMO, and LTE multi-user MIMO scheme, by simulation analysis summed up when the number of users is small, at high SNR conditions, the system throughput performance of the ZF program superior PU2RC program.
Update : 2025-02-17 Size : 352kb Publisher : sofia
[Other] SPHERE-DECODING DL : 0: ：在长期演进(LTE)系统中，球形译码算法拥有接近于最大似然(ML)的误码率(BER)性能。针对在 16QAM和64QAM等高阶调制情况下球形译码算法计算复杂度和所需硬件资源的急剧增加，提出了一种调整符号搜索策略的改进型球形译码算法。该算法在不同的检测层采用特定的符号搜索方案，并结合一种基于信噪比的动态调整半径方法。在无线瑞利信道环境下，对各种球形译码算法进行了仿真。仿真结果表明，提出的改进型算法基本保持传统球形译码算法较低的BER性能，同时还有效地降低了计算复杂度和硬件实现复杂度。-Motivated by the need for high throughput sphere decoding formultipleinput- multiple-output (MIMO) communication systems, we propose a parallel depth-first sphere decoding (PDSD) algorithm that provides the advantages of both parallel processing and rapid search space reduction. The PDSD algorithm is designed for efficient implementation on programmable multi-processor platforms. We investigate the trade-off between the throughput and computation overhead when the number of processing elements is 2, 4 and 8, for a 4× 4 16-QAM system across a wide range of SNR conditions. Through simulation, we show that PDSD can offer significant throughput improvement without incurring substantial computation overhead by selecting the appropriate number of processing elements according to specific SNR conditions
Update : 2025-02-17 Size : 144kb Publisher : 田航
[matlab] OFDM_basic DL : 0: 多输人多输出(MIMO)技术是第三代和未来移动通信与个人通信系统实现高数据速率，提高传输质量的重要途径[1 ]。目前MIMO系统中使用的发射方案主要包括：①贝尔分层空时结构BI STA(Bell Layered Space Time Architecture)[。；②正交空时分组码OSTBC(Orthogonal Space Time Block Coding) ；⑧空时格型编码STTC(Space Time Trellis Coding) 。-Motivated by the need for high throughput sphere decoding formultipleinput- multiple-output (MIMO) communication systems, we propose a parallel depth-first sphere decoding (PDSD) algorithm that provides the advantages of both parallel processing and rapid search space reduction. The PDSD algorithm is designed for efficient implementation on programmable multi-processor platforms. We investigate the trade-off between the throughput and computation overhead when the number of processing elements is 2, 4 and 8, for a 4× 4 16-QAM system across a wide range of SNR conditions. Through simulation, we show that PDSD can offer significant throughput improvement without incurring substantial computation overhead by selecting the appropriate number of processing elements according to specific SNR conditions.
Update : 2025-02-17 Size : 2kb Publisher : 田航
[matlab] qrm DL : 0: QRMMLD算法主程序仿真应用需要主程序调用请自行解决-Motivated by the need for high throughput sphere decoding formultipleinput- multiple-output (MIMO) communication systems, we propose a parallel depth-first sphere decoding (PDSD) algorithm that provides the advantages of both parallel processing and rapid search space reduction. The PDSD algorithm is designed for efficient implementation on programmable multi-processor platforms. We investigate the trade-off between the throughput and computation overhead when the number of processing elements is 2, 4 and 8, for a 4× 4 16-QAM system across a wide range of SNR conditions. Through simulation, we show that PDSD can offer significant throughput improvement without incurring substantial computation overhead by selecting the appropriate number of processing elements according to specific SNR conditions.
Update : 2025-02-17 Size : 4kb Publisher : 田航
[matlab] SNR DL : 0: 认知无线电中遗传算法在不同信噪比下吞吐量比较-Cognitive radio throughput genetic algorithms compare the different SNR
Update : 2025-02-17 Size : 18kb Publisher : 刘晨
[CSharp] semi_persistent-with-priority DL : 0: 研究LTE系统中半静态调度引入优先级后，用户吞吐量与SNR的关系-After studying the LTE system, the introduction of the semi-static scheduling priority, and user throughput and the relationship between SNRoutput of the converted character encoding. If the input aAb, output cCg
Update : 2025-02-17 Size : 2kb Publisher : 李顺
[Software Engineering] LTElinkDoc DL : 0: LTE链路级仿真说明文档，含有信噪比和吞吐量等关系MATLAB仿真说明。-LTE link level simulation documentation containing SNR and throughput relations MATLAB simulation instructions.
Update : 2025-02-17 Size : 1.56mb Publisher : 刘洋
[matlab] jxasjsqz DL : 0: 对HARQ系统的吞吐量分析，在matlab R2009b调试通过，最大信噪比的独立分量分析算法，考虑雨衰阴影和多径影响，包含光伏电池模块、MPPT模块、BOOST模块、逆变模块，采用热核构造权重，用于图像处理的独立分量分析。-HARQ throughput analysis of the system, In matlab R2009b debugging through, SNR largest independent component analysis algorithm, Consider shadow rain attenuation and multipath effects PV modules contain, MPPT module, BOOST module, inverter module, Thermonuclear using weighting factors Independent component analysis for image processing.
Update : 2025-02-17 Size : 8kb Publisher : vhxzjbwws
[Internet-Network] usor DL : 0: The performance metrics like energy consumption, packet delivery ratio, average SNR and throughput are considered for analyses. Simulation tool used is Network Simulator platform NS2.
Update : 2025-02-17 Size : 3kb Publisher :
[matlab] adhoc_tcp DL : 0: The adhoc network performance metrics like energy consumption, packet delivery ratio, average SNR and throughput are considered for analyses. Simulation tool used is Network Simulator platform NS2.
Update : 2025-02-17 Size : 3kb Publisher :
[File Format] Performance Analysis of Intelligent Reflecting Surface Assisted NOMA Networks DL : 1: Intelligent reflecting surface (IRS) is a promising technology to enhance the coverage and performance of wireless networks. We consider the application of IRS to non-orthogonal multiple access (NOMA), where a base station transmits superposed signals to multiple users by the virtue of an IRS. The performance of an IRS-assisted NOMA networks with imperfect successive interference cancellation (ipSIC) and perfect successive interference cancellation (pSIC) is investigated by invoking 1- bit coding scheme. In particular, we derive new exact and asymptotic expressions for both outage probability and ergodic rate of the m-th user with ipSIC/pSIC. Based on analytical results, the diversity order of the m-th user with pSIC is in connection with the number of reflecting elements and channel ordering. The high signal-to-noise radio (SNR) slope of ergodic rate for the m-th user is obtained. The throughput and energy efficiency of IRS-NOMA networks are discussed both in delaylimited and delay-tolerant transmission modes. Additionally, we derive new exact expressions of outage probability and ergodic rate for IRS-assisted orthogonal multiple access (IRS-OMA). Numerical results are presented to substantiate our analyses and demonstrate that: i) The outage behaviors of IRS-NOMA are superior to that of IRS-OMA and relaying schemes; ii) The M-th user has a larger ergodic rate than IRS-OMA and benchmarks. However, the ergodic performance of the m-th user exceeds relaying schemes in the low SNR regime; and iii) The IRS-assisted NOMA networks have ability to achieve the enhanced energy efficiency compared to conventional cooperative communications
Update : 2021-08-30 Size : 332.49kb Publisher : dipfr@yahoo.fr