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To support the varying Quality-of-Service (QoS) requirements of emerging applications such as those involving continuous media, a new standard IEEE 802.11e has been specified [1]. This standard aims to support QoS by providing differentiated classes
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To support the varying Quality-of-Service (QoS) requirements of emerging applications such as those involving continuous media, a new standard IEEE 802.11e has been specified [1]. This standard aims to support QoS by providing differentiated classes
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To support the varying Quality-of-Service (QoS) requirements of emerging applications such as those involving continuous media, a new standard IEEE 802.11e has been specified [1]. This standard aims to support QoS by providing differentiated classes
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To support the varying Quality-of-Service (QoS) requirements of emerging applications such as those involving continuous media, a new standard IEEE 802.11e has been specified [1]. This standard aims to support QoS by providing differentiated classes
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To support the varying Quality-of-Service (QoS) requirements of emerging applications such as those involving continuous media, a new standard IEEE 802.11e has been specified [1]. This standard aims to support QoS by providing differentiated classes
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Designing spectral e±cient, high-speed wireless links that o® er high quality-
of-service and range capability has been a critical research and engineering chal-
lenge. In this thesis, we mainly address the complexity and performance issues o
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通过仿真和分析对比SCFDMA的性能和算法。This a very simple baseband simulator for SC-FDMA system. This simulator is
part of the upcoming book “Single Carrier FDMA: A New Air Interface for Long
Term Evolution” (Wiley, Nov. 2008) which I co-authored with professor D
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在多径分量数确定的前提下,MIMO-OFDM系统采用传统的基于导频辅助和盲信道估计算法能获得较好性能。实际无线环境中,多径分量数目与幅度都是时变的,则传统信道估计方法不再适用。该文采用随机集理论建模MIMO-OFDM系统信道多径分量数的变化和MIMO信道。基于此模型提出了集中粒子空间重采样方法(CRS),在保留大概率粒子抽样样本的同时主动抛弃小概率抽样样本,以获得更为准确的真实样本逼近。并提出了基于集中重采样Rao-Blackwellised粒子滤波的信道估计方法(RBPFC)。仿真结果表明:所
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信道的频率响应是时变的，设计最佳的固定的解调滤波是不可能的，因此，需要一种能补偿或减少接收信号中ISI的方法，这种ISI补偿方法称为均衡方法。
自适应均衡技术能够用来抵消由于信道带限或时间色散所导致的码间干扰，可以使通信系统更有效地利用信道带宽。
-Channel frequency response is time-varying, the best fixed design demodulation filter is impossible, therefore, need to
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时变信道下LTE系统基于传输分集的MIMO预编码技术仿真代码，还包括了平坦衰落信道条件下的程序，很值得参考。-Time-varying LTE system is based on channel Transmit Diversity for MIMO precoding simulation code also includes procedures for the flat fading channel conditions , it is worth considering .
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自适应均衡器的LMS算法实现及其仿真 :自适应均衡器已广泛应用于通信、雷达、声纳、控制和生物医学工程等许多领域,为克服多径衰落和信道失真引起的的码间干扰,实时跟踪移动通信信道的时变特性,笔者设计了一个基于LMS 算法的自适应线性均衡器,并通过改变步长因子Δ来分析其收敛速度和均方误差特性.
-Adaptive equalizer LMS algorithm and its simulation: adaptive equalizer has been widely used in commun
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衰落是由于发射机与接收机之间空间位置的微小变化引起的，描述小范围内接收信号场强中瞬时值的快速变化特性，是由多径传播和多普勒频移两者共同作用的结果，包括由多径效应引起的衰落和信道时变性引起的衰落，具有信号的多径时延扩展特性和信道的时变特性-Fading is caused due to a slight change of the position of the space between the transmitter and the receiver, the characteristics
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Vehicular channel is characterized by non- stationarity and doubly selective nature. The term doubly selective implies that they have both time varying and frequency selective behaviour. The material attached here address this features.
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A 2x2 multiple-input multiple-output (MIMO) architecture
using dual-polarized antennas (DPAs) is considered
with orthogonal frequency division multiplexing (OFDM). The
performance of DPAs is evaluated for adaptive polarization
(AP) transmissi
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A dynamic estimation of channel is necessary before the transmission of the signals since the wireless channel is time–varying..we use MMSE method for channel estimation. The MMSE method calculates the following, MMSE channel estimator is designed to
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this matlab code is for channel estimation. when the communication channel is time varying for correct detection of received information you should stimate the communication channel.
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研究快时变OFDM信道估计的WSSUS模型的传播函数MATLAB仿真，适合零基础的同学理解与学习。-Study the spread of fast time-varying WSSUS model of OFDM channel estimation function of MATLAB, the suitable for zero basis of students understanding and learning.
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研究快时变OFDM信道估计的WSSUS模型的时变脉冲响应MATLAB仿真图，也是实现《Wireless Communications OverRapidly Time-Varying Channels (2011)>>中的脉冲响应仿真图源程序-Research of fast time-varying OFDM channel estimation WSSUS model the time-varying impulse response of the MATLAB simulati
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In this paper, the problem of estimation
of fast time-varying radio channels is considered. A
new algorithm, Iterative Channel Estimation is
presented. This algorithm is designed for radio
channel estimation in multiple-input multipleoutput
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博弈论应用于认知无线电的有价值的文章，可供初学者学习。(Various spectrum management schemes have been proposed in recent years to improve the spectrum utilization in cognitive radio networks. However, few of them have considered the existence of cognitive attackers who can adap
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