关于MIMO的入门级资料,主要介绍了MIMO的基本原理、模型和实现
2020-01-03 11:16:36 1.12MB MIMO
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抽象信道估计对于具有混合预编码的毫米波(mmWave)大规模MIMO是具有挑战性的,因为射频(RF)链的数量远小于天线的数量。传统的基于压缩感测的信道估计方案由于信道角度量化而遭受严重的分辨率损失。为了提高信道估计精度,本文提出了一种基于迭代重测(IR)的超分辨率信道估计方案。通过梯度下降法优化目标函数,所提出的方案可以迭代地将估计的到达/离开角度(AoAs / AoD)移向最优解,并最终实现超分辨率信道估计。在优化中,权重参数用于控制稀疏度和数据拟合误差之间的权衡。另外,开发基于奇异值分解(SVD)的预处理以降低所提出的方案的计算复杂度。仿真结果验证了该方案比传统解决方案更好的性能。
2019-12-30 03:31:17 108KB 信道估计 massive mimo
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经典教材 mimo ofdm无线通信技术及matlab实现 源代码
2019-12-28 17:17:34 755KB mimo ofdm matlb
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MIMO_预编码算法及信道估计误差对预编码算法影响的研究
2019-12-21 22:23:49 343KB MIMO 预编码 信道估计
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MIMO OFDM Simulator: OFDM.m: OFDM Simulator (outer function) create_channel.m: Generates a Rayleigh fading frequency-selective channel, parametrized by the antenna configuration, the OFDM configuration, and the power-delay profile. svd_decompose_channel.m: Since full channel knowledge is assumed, transmission is across parallel singular value modes. This function decomposes the channel into these modes. BitLoad.m: Apply the bit-loading algorithm to achieve the desired bit and energy allocation for the current channel instance. ComputeSNR.m: Given the subcarrier gains, this simple function generates the SNR values of each channel (each singular value on each tone is a separate channel). chow_algo.m: Apply Chow's algorithm to generate a particular bit and energy allocation. EnergyTableInit.m: Given the SNR values, form a table of energy increments for each channel. campello_algo.m: Apply Campello's algorithm to converge to the optimal bit and energy allocation for the given channel conditions. ResolvetheLastBit.m: An optimal bit-loading of the last bit requires a unique optimization. modulate.m: Modulate the random input sequence according to the bit allocations for each channel. ENC2.mat: BPSK Modulator ENC4.mat: 4-QAM Modulator (Gray coded) ENC16.mat: 16-QAM Modulator (Gray coded) ENC64.mat: 64-QAM Modulator (Gray coded) ENC256.mat: 256-QAM Modulator (Gray coded) precode.m: Precode the transmitted vector at each time instance by filtering the modulated vector with the right-inverse of the channel's right singluar matrix. ifft_cp_tx_blk.m: IFFT block of the OFDM system. channel.m: Apply the channel to the OFDM frame. fft_cp_rx_blk.m: FFT block of the OFDM system. shape.m: Complete the diagonalization of the channel by filtering the received vector with the left-inverse of the channel's left singular matrix. demodulate.m: Perform a nearest neighbor search knowing the transmit constellation used.
2019-12-21 22:22:59 1.65MB OFDM-MIMO,matlab,
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压缩包里面是一些有关于多用户MIMO预编码技术的matlab编程,希望能对大家提供一定的帮助。
2019-12-21 22:22:52 78KB mimo
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通过一些网络文档整理出来的一份有关于多用户MIMO系统THP预编码研究方面的资料,希望你能对大家提供帮助。
2019-12-21 22:22:52 1.3MB mimo
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在无限个天线的极限情况下, 特别是不相关噪声和快衰落影响的消失,吞吐量和终端个数独立于小区的大小,频谱效率独立于带宽,每比特所需的传输的能量消失。唯一剩下的损害就是由在别的小区重复使用的导频序列而产生的小区间干扰,并不会随着天线数目的无限多而消失。
2019-12-21 22:21:34 194KB 维纳滤波器
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贝尔的VBLAST算法,详细介绍了VBLAST算法的信号的检测算法。
2019-12-21 22:18:00 62KB V-BLAST
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COST2100 MIMO信道模型是基于几何统计特性的多输入多输出信道模型。它的出现时基于早起COST259 和 COST273模型的框架二乘。COST2100 信道模型提出了散射簇VR(可见区域)的概念来描述移动台位于不同位置时经理的散射簇数量的变化,进一步精确的描述了信道特性。
2019-12-21 22:17:53 1.4MB MIMO 信道模型
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