Search - mimo ofdm frequency selective channel

Search - mimo ofdm frequency selective channel - List

[Other] channel DL : 0: ofdm信道特性 Channel transmission simulator Channel transmission simulator ％％ inputs: ％ sig2 - noise variance ％ Mt - number of Tx antennas ％ Mr - number of Rx antennas ％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column ％ is the value of the antenna outputs at a single time instance) ％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission ％ N - number of symbols transmitted in OFDM frame ％％ outputs: ％ y - vector of channel outputs (matrix for MIMO again, just like x matrix) ％ create noise vector sequence (each row is a different antenna, each column is a ％ different time index) note: noise is spatially and temporally white
Date : 2008-10-13 Size : 812byte User : sunxu
[Documents] mimo_capacity DL : 0: 频率选择性衰落环境中MIMO系统信道容量研究-Frequency selective fading environment, MIMO systems channel capacity study
Date : 2025-07-07 Size : 272kb User : dengjuan
[Other] channel DL : 0: ofdm信道特性 Channel transmission simulator Channel transmission simulator ％％ inputs: ％ sig2 - noise variance ％ Mt - number of Tx antennas ％ Mr - number of Rx antennas ％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column ％ is the value of the antenna outputs at a single time instance) ％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission ％ N - number of symbols transmitted in OFDM frame ％％ outputs: ％ y - vector of channel outputs (matrix for MIMO again, just like x matrix) ％ create noise vector sequence (each row is a different antenna, each column is a ％ different time index) note: noise is spatially and temporally white-channel characteristics of OFDM Channel transmission simulatorChannel transmission simulator inputs: sig2- noise variance Mt- number of Tx antennas Mr- number of Rx antennas x- vector of complex input symbols (for MIMO, this is a matrix, where each column is the value of the antenna outputs at a single time instance) H- frequency selective channel- represented in block-Toeplitz form for MIMO transmission N- number of symbols transmitted in OFDM frame outputs: y- vector of channel outputs (matrix for MIMO again, just like x matrix) create noise vector sequence (each row is a different antenna, each column is a different time index) note: noise is spatially and temporally white
Date : 2025-07-07 Size : 1kb User : sunxu
[Communication-Mobile] channel DL : 0: 信道描述，计算冲激响应函数，为频选衰落信道，用于MIMO或ＭＩＭＯ－ＯＦＤＭ系统-Channel description, calculation of impulse response function, for Frequency-Selective Fading Channels for MIMO or MIMO-OFDM system
Date : 2025-07-07 Size : 1kb User : 刘斐
[matlab] ofdm-siso DL : 1: 正交频分复用是一种多载波宽带数字调制技术。相比一般的数字通信系统，它具有频带利用率高和抗多径干扰能力强等优点，因而适合于高速率的无线通信系统。- OFDM Simulator -------------------------------------------------------------------------------- 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
Date : 2025-07-07 Size : 180kb User : 田静
[source in ebook] 222 DL : 0: MIMO频率选择性信道自适应均衡，有matlab源码-MIMO frequency selective channel adaptive equalizer
Date : 2025-07-07 Size : 236kb User : 路伟
[Program doc] On-performance-of-MIMO-OFDM-based-LTE-systems DL : 0: Ajey, S., B. Srivalli, et al. (2010). On performance of MIMO-OFDM based LTE systems. Wireless Communication and Sensor Computing, 2010. ICWCSC 2010. International Conference on. 4G wireless systems predominately employ multiple input multiple output (MIMO) with an orthogonal frequency division multiplexing (OFDM) system. Like other 4G systems long term evolution (LTE) also employs MIMO-OFDM physical layer. MIMO helps in increasing the throughput whereas OFDM converts a frequency selective fading channel to multiple flat fading sub-channels facilitating easy equalization. It is proposed that LTE system should mandatorily support 2Ã — 2 MIMO setup. Our paper focuses on the performance of such a LTE system with two transmit antennas and two receive antennas in a frequency selective fading environment.
Date : 2025-07-07 Size : 304kb User : Lakmali
[matlab] LDPC_matlabcode123 DL : 0: the use of coherent space-frequency coding in orthogonal frequency division multiplexing (OFDM)-based frequency-selective multiple-input multiple-output (MIMO) antenna fading channels has been proposed. Acquiring knowledge of the fading coefficients in a MIMO channel is already very challenging in the frequency-flat (fast) fading case. In the frequency-selective case, this task becomes significantly more difficult due to the presence of multiple paths, which results in an increased number of parameters to be estimated. In this paper, we address code design for noncoherent frequency-selective MIMO-OFDM fading links, where neither the transmitter nor the receiver knows the channel. We derive the code design criteria
Date : 2025-07-07 Size : 32kb User : sourov
[matlab] MIMO-OFDM-Simulator DL : 0: 　多输入多输出正交分频多工模拟器。　　正交分频多工:OFDM模拟器(外层函数) 　　　　　　create_channel:产生一个瑞利衰落信道复用,解的天线配置、正交分频多工结构、power-delay档案。　　　　　　svd_decompose_channel:既然全网络知识是假设,在并行传输奇异值模式。这个函数分解这些频道模式。　　　　　　BitLoad:适用bit-loading算法来实现预期的钻头和能量 -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 allocatio
Date : 2025-07-07 Size : 14kb User : liufan
[AI-NN-PR] OFDM DL : 0: Matlab code which implements MB-OFDM transmission block as per ECMA 368 standard. OFDM over frequency selective wireless channels simulation code for Peak-to-Average Power Ratio (PAPR) reduction in MIMO OFDM/A system using CMA This is an OFDM simulation that gives you the PAPR, BER, and the PSD before and after the SSPA. the program distribute an amount power among ofdm subchannel to make the capacity of a channel as ma Representation of OFDM signal with PAPR reduction using Clipping and SLM Techniques. The complete project of OFDMA system. It tries to maximize the network capacity. Link and system level simulator for OFDM based wireless broadband systems Ultrawideband (UWB) multiband OFDM physical layer with fixed-point transmitter/receiver modeling.
Date : 2025-07-07 Size : 838kb User : Sina
[Communication-Mobile] mimo-ofdm performance DL : 0: 在不同的信道下（如频率选择性信道和非频率选择性信道）mimo-ofdm的性能(Performance of MIMO-OFDM under different channels (such as frequency selective channels and non frequency selective channels))
Date : 2025-07-07 Size : 397kb User : tsxywy365