Description: a new method for identification of fast fading mobile channels. Estimates both the channel statistics and the time varying channel impulse respone on -line. -a new method for identification of fast fading mobile channels. Estimates both the channel statistics and the time varying channel impulse respone on-line. Platform: |
Size: 112640 |
Author:karti |
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Description: it is a full project report on Performance Analysis of Spatial Channel Model in fast fading Platform: |
Size: 871424 |
Author:Anoop Agarwal |
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Description: 这些论文中描述了在快衰落信道中如何改进算法效率，使小区间切换迅速准确。-The paper describes the fast fading channel, how to improve the efficiency of the algorithm, the area quickly and accurately switch between. Platform: |
Size: 858112 |
Author:lianwenzhao |
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Description: 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 Platform: |
Size: 32768 |
Author:sourov |
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Description: A closed-loop power control system
having both fixed-step and adaptive-step power
control algorithms and incorporating with
multitap RAKE receivers was proposed.
Simulations were performed for wide-band radio
channels having path loss, slow fading, and fast
fading. As the measurement of the received power
and the bit energy-to-interfkrence power spectral
density ratio play an important role in a CDMA
power control system, a scheme to estimate these
two parameters was proposed. For a Rayleigh
fading channel and a Rician fading channel
having a K factor of 6dB, a three-tap RAKE
receiver is desirable. Platform: |
Size: 53248 |
Author:nani |
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Description: . 对于基于块状（block-type）导频的信道估计，仿真实现LS， LMMSE modified 和基于SVD的降维LMMSE 算法在多径频率选择性特征的信道上的BER VS SNR 和BER VS Doppler frequency shift 的功能。
2. 对于基于梳状（comb-type）导频的信道估计，实现LS with 1D linear interpolation, LS with second-order interpolation, LS with Spline cubic interpolation.
3. 比较块状和梳妆导频信道估计方法在不同的特征的信道上的性能（channel with fast fading and channel with slow fading）.
4. 信号的调制方式可以选择16QAM或者QPSK
5.对于SVD-LMMSE （optimal rank reduction）, rank的取值P也会的到分析。 Platform: |
Size: 2461 |
Author:xiongsj715@163.com |
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Description: 这篇文章主要讲述了等离子鞘套的信道特征，包括电子密度的分布还有以此关于天线位置的安装等问题，得出结论可以建模为快衰落的莱斯信道，对于临近空间飞行器的通信问题提供了理论依据，但鞘套内部通信特征还是一大问题-This article describes the plasma sheath channel characteristics, including the distribution of electron density and thus the installation of the antenna position on issues such as the conclusion can be modeled as fast fading fading channels, for the approaching spacecraft communications problem provides a theoretical basis, but features an internal communication sheath or a big problem Platform: |
Size: 214016 |
Author:朱从莹 |
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Description: 连续导频正弦波通过存在Doppler频移的快衰落信道复模型（基带等效模型）的构造-Continuous pilot frequency sine wave by the presence of Doppler shift fast fading channel model (complex baseband equivalent model) structure
Platform: |
Size: 5120 |
Author:dabao |
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Description: 连续导频正弦波通过存在Doppler频移的快衰落信道复模型（基带等效模型）的构造-Continuous pilot frequency sine wave by the presence of Doppler shift fast fading channel model (complex baseband equivalent model) structure Platform: |
Size: 5120 |
Author:verktfi |
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Description: Abstract—Diagonal Bell Laboratories Layered Space-Time (DBLAST)
structure offers a low complexity solution to realize the
attractive capacity of Multiple-input and multiple-output (MIMO)
systems. In this paper, we apply D-BLAST in orthogonal frequency
division multiplexing (OFDM) systems and address the issue of
channel estimation. Different other MIMO-OFDM, where
symbols at all tones are always available for decision-directed
channel estimation, in D-BLAST OFDM, we update estimated
channel parameters each time a layer is detected with a least
square (LS) approach, using a pieced combination of received signals
at previous and current OFDM blocks. The initial estimate is
further refined by a robust estimator to exploit the time correlation
of channel parameters among OFDM blocks. Computer simulation
results show the performance improvement over block-wise
channel estimation. It is also shown that D-BLAST with proposed
channel estimation is robust to fast fading of channel parameters.-Abstract—Diagonal Bell Laboratories Layered Space-Time (DBLAST)
structure offers a low complexity solution to realize the
attractive capacity of Multiple-input and multiple-output (MIMO)
systems. In this paper, we apply D-BLAST in orthogonal frequency
division multiplexing (OFDM) systems and address the issue of
channel estimation. Different other MIMO-OFDM, where
symbols at all tones are always available for decision-directed
channel estimation, in D-BLAST OFDM, we update estimated
channel parameters each time a layer is detected with a least
square (LS) approach, using a pieced combination of received signals
at previous and current OFDM blocks. The initial estimate is
further refined by a robust estimator to exploit the time correlation
of channel parameters among OFDM blocks. Computer simulation
results show the performance improvement over block-wise
channel estimation. It is also shown that D-BLAST with proposed
channel estimation is robust to fast fading of channel parameters. Platform: |
Size: 80896 |
Author:werad |
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Description: 连续导频正弦波通过存在Doppler频移的快衰落信道复模型（基带等效模型）的构造-Continuous pilot frequency sine wave by the presence of Doppler shift fast fading channel model (complex baseband equivalent model) structure Platform: |
Size: 6144 |
Author:fx91291766miba |
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Description: 该程序是一个比较完整的MATLAB程序,它能实于基于导频的OFDM信道估计,包括慢衰落及快衰落信道的估计.(The program is a more complete MATLAB program, it actually made in the pilot-based OFDM channel estimation, including the slow fading and fast fading channel estimation.) Platform: |
Size: 11264 |
Author:petcat |
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Search - channel fast fading