Description: 为了抑制多用户MIMO-OFDM系统的共道干扰,采用MMSE干扰抑制和符号估计相结合的检测方案,该检测方案接收端译码简单.理论分析及仿真结果表明,与传统检测方案相比,该检测方案在没有增加计算复杂度的情况下有效地抑制并消除了共道用户干扰.-In order to restrain the interference of co-channel users in MIMO-OFDM system,in this paper,adopted the combination of the detection scheme about the linear MMSE interference suppression and symbol estimation,and the receiver maintained decoding simplicity.Theory analysis and simulation results reveal that the proposed scheme can suppress and cancel the interference from co-channel users effectively without increasing the complexity significantly. Platform: |
Size: 200704 |
Author:王睿 |
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Description: 用小波变换思想,提出一种基于小波去噪的多输入多输出正交频分复用(MIMO-OFDM)系统信道估计方法。该方法首先利用最小二乘(LS)方法进行信道估计,然后对估计后的结果进行小波去噪处理。与传统最小二乘信道估计方法相比,该方法不需要预先知道信道的统计特性,信道估计性能有明显提高。-Based on wavelet transform,a method for MIMO-OFDM channel estimation with noise reduction is given,which is divided into DFT interpolation and noise reduction.Simulation experiments shows that,Compared with the traditional linear interpolation or DFT interpolation,the new method does not need any statistical characteristic of channel and it has good performance of channel estimation. Platform: |
Size: 206848 |
Author:王睿 |
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Description: 本书从信道估计的角度出发,详细介绍了基于MIMO-OFDM技术的联合物理层和MAC层的跨层设计思想。-Book from the perspective of channel estimation, described in detail based on MIMO-OFDM technology, the physical layer and MAC layer of the joint cross-layer design. Platform: |
Size: 6342656 |
Author:zwb |
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Description: MIMO OFDM 技术将成为第4 代移动通信系统的关键技术, 因MIMO OFDM 对时间和频率偏移非常敏感,
因此MIMO OFDM 同步显得尤为重要。提出了一种新的MIMO OFDM 定时同步和频偏同步技术。以GCL 序列为基础设
计了一个新的符合MIMO OFDM 同步技术的导频序列, 通过对该导频序列进行2 次相关得到频率估计, 并将所得频率
运用到定时同步中, 得到更为准确的时间估计。仿真结果表明, 在相同的信噪比情况下, 该方法可以使得系统的误码
率和帧传送误码率相对传统方法得到进一步减小。-MIMO OFDM will become a key technology of the fourth generation mobile communications system. However, MIMO OFDM is
sensitive to the CFO and timing synchronization, so the MIMO OFDM synchronization technology is very important. This paper proposes an
accurate technique for timing and frequency synchronization of multiple input multiple output ( MIMO ) orthogonal frequency division
multiplexing ( OFDM) systems. The technique derives a new preamble signal based on GCL sequences, according with the MIMJO OFDM
synchronization. The carrier frequency offset ( CFO) estimation is obtained through taking double correlation operations on the preamble signal,
and used in the timing synchronization to gain accurate time estimation. The simulation results show that at the same SNR, the proposed method
can reduce the BER and the frame transmission BER of the system compared to the conventional method. Platform: |
Size: 408576 |
Author:蜡笔 |
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Description: MIMO-OFDM This contains 70 .m files for a complete simulation of a MIMO-OFDM channel. including pilot aided channel estimation, coding, MRC and frequency synchronization.It uses Jack rayleigh channel model Platform: |
Size: 811008 |
Author:Sherra |
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Description: MIMO-OFDM基于导频的信道估计的一篇硕士论文，非常不错-MIMO-OFDM channel estimation based on pilot a master' s thesis, very good Platform: |
Size: 2146304 |
Author:cmdeng |
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Description: 无线信道估计：基于mimo和ofdm信道估计理论，算法。包括
MIMO衰落信道的测量和建模方法；
MIMO信道容量的分析；
基于MIMO的空时编/解码方法；
基于MIMO的接收机关键技术，如信道估计、均衡、多用户检测等。
-Radio channel estimation: theory, algorithms based mimo ofdm channel estimation. Include
MIMO fading channel measurement and modeling
MIMO channel capacity analysis
Encoding/decoding method based on MIMO empty
Based on the the MIMO receiver key technologies, such as channel estimation, equalization, multiuser detection. Platform: |
Size: 1314816 |
Author:龙川 |
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Description: mimo-ofdm系统中信道容量估计的分析和仿真，很详细-Analysis and Simulation of channel capacity estimation in MIMO-OFDM system, a very detailed Platform: |
Size: 355328 |
Author:杨旭 |
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Description: MIMO的信道估计及误差，信道频域响应，两种估计方法，误差-MIMO channel estimation and error, channel frequency response of two estimation methods, the error Platform: |
Size: 2048 |
Author:郑沐 |
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Description: channel estimation based on MIMO-OFDm is a promising technology that will provide the high datarates , increased capacity, spectral efficiency and reliability that is required for a more efficient wireless communication. Platform: |
Size: 3161088 |
Author:John |
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Description: MIMO_OFDM的信道估计，方法较多，性能很好，十分完整而强大的程序-MIMO_OFDM channel estimation methods are more good performance, very complete and powerful program Platform: |
Size: 1539072 |
Author:罗文翠 |
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Description: Performance comparison of RLS and LMS channel estimation techniques with optimum training sequences for MIMO-OFDM systems
Performance comparison of RLS and LMS channel estimation techniques with optimum training sequences for MIMO-OFDM systems Platform: |
Size: 2048 |
Author:MUHAMMAD SHAKIL |
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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: Matlab code for the least square error channel estimation and Minimum Mean Square channele estimation for a MIMO OFDM system. simulation result is compared with theory.-Matlab code for the least square error channel estimation and Minimum Mean Square channele estimation for a MIMO OFDM system. simulation result is compared with theory. Platform: |
Size: 12288 |
Author:ali |
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Description: 文章介绍了自适应均衡技术在MIMO OFDM系统中的应用研究。-In this paper, an adaptive channel
estimation for MIMO OFDM is proposed. A set of pilot
tones first are placed in each OFDM block, then the
channel frequency response of these pilot tones are
adaptively estimated by recursive least squares (RLS)
directly in frequency domain not in time domain. Then Platform: |
Size: 419840 |
Author:王峰 |
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Search - MIMO-OFDM-estimation