The space-time channel estimation and multiuser detection algorithm for the uplink of multicarrier CDMA (MC-CDMA) system in frequency selective Rayleigh fading channel were investigated.
研究了频率选择性瑞利衰落信道中的同步MC-CDMA系统上行链路空时信道估计及多用户检测算法。
The low-voltage power line channel properties are analyzed in this paper and a decision feedback channel estimation method is proposed on condition of slow time-variant of channel.
该文分析了低压电力线信道特性，利用信道慢时变的特点提出一种适合于电力线信道的判决反馈信道估计方法。
Now, a general solution is that combining STC with OFDM, but it is supposed that the channel changes slowly, so there is enough time to transmit the training sequence for channel estimation.
目前，一种普遍的解决方法是将空时码与正交频分复用（OFDM）相结合，但需要假定信道变化缓慢，从而有足够的时间通过发送训练序列来进行信道估计。
A combined channel estimation method of time-frequency-selective fading channels in MIMO-OFDM systems was proposed.
提出了一种适用于时间频率选择性衰落信道的MIMO - OFDM系统的组合信道估计方法。
The simulation results showed that the estimate-time of Solution I was reduced remarkably, but the reliability of estimation was limited by the channel condition and the decode-depth;
经过仿真发现，方案一虽然能在很大程度上缩短估计时间，但可靠性受到信道条件和译码深度的限制；
We investigate the channel estimation algorithms based on tracking multipath time delay, a low complexity multipath time delay estimation method is proposed.
论文研究了基于多径时延跟踪的信道估计方法，并提出了一种低复杂度的多径时延跟踪方法。
We propose new carrier frequency acquisition and channel estimation algorithms based on the time-domain analysis of OFDM system.
本文根据OFDM系统特点，分析了OFDM系统的时域载波频率捕获和信道估计方法。
Introduce the Wiener filter algorithm base on MMSE, and time domain channel estimation algorithms.
介绍了基于MMSE维纳滤波算法，变换域信道估计算法，以及判决反馈信道估计算法。
In this paper, by combining the subspace method with layered space-time codes, we propose a vertical layered space-time code and accomplish the channel estimation without the training symbols.
本文将信号处理中的子空间方法同分层空时码的编码结构相结合，提出了一种垂直分层空时编码，实现了无需训练序列的信道估计。
Space time channel can be described by vector channel impulse response (VCIR). Estimation of the VCIR is very important for Smart Antenna Systems.
时空信道可以用矢量信道冲激响应（VCIR）来描述，正确估计VCIR是智能天线系统实现的关键技术。
The result shows that, compared with the existing channel estimation algorithms for OFDM system under time-vary multipath channel, the proposed algorithm can effectively reduce estimation errors.
分析结果表明，与已有的OFDM系统在时变多径信道中的信道估计技术相比，所建议的算法可以有效地减小信道估计的误差。
The problem of channel estimation and tracking for MIMO time-varying frequency-selective channels is investigated based on training sequences.
本文主要研究了基于训练序列的多输入多输出（MIMO）时变频率选择性衰落信道的估计与跟踪问题。
Based on the detailed analysis of the channel impulse response (CIR) leakage in the practical OFDM systems, a sub-optimal time domain channel estimation algorithm is proposed.
基于对实际系统中信道冲激响应(CIR)泄漏问题的详细分析，提出了一种次优的时域信道估计算法。
When the Angle modulation signals made up of the message model have passed through a randomly time-varying channel, a complex nonlinear estimation model is formed.
当此消息模型构成的角调信号通过随机时变信道后，形成复杂的非线性估计模型。
Robust time delay estimation method based on least mean p-norm blind channel identification(BCILMP) was proposed and applied to estimate the propagation velocities of GEA.
根据分数低阶统计量理论，本研究提出一种基于最小平均p范数盲信道辨识的韧性时间延迟估计算法（BCILMP），对胃电信号传导速率进行估计。
A channel estimation algorithm is proposed for OFDM wireless communication system under time-varying multipath channel.
提出了一种OFDM系统在时变多径信道中的信道估计算法。
This thesis mainly focuses on the time-varying channel estimation methods based on pilot tones in wireless OFDM systems.
本文主要研究了无线OFDM系统中基于导频的时变信道估计方法。
Channel estimation and tracking in time-varying MIMO wireless communication systems play a key role in detecting, decoding and recovering the transmitted ingormation at receiver side.
对时变多输入多输出（MIMO）信道的估计和跟踪是实现MIMO系统接收端准确检测、解码等的前提。
At the same time, the channel estimation error, caused by the spectral leakage of DFT, can be reduced by canceling the auto-correlation error of the time-domain sequence of frequency-domain pilots.
同时，通过消除频域导频时域序列的自相关误差，能有效降低由DFT谱泄漏导致的信道估计误差。
In this paper, the orthogonal projection approximation subspace tracking (OPAST) is employed for channel estimation and space-time multiuser detection in space-time block coded MIMO system.
文章提出在空时分组编码的MIMO系统中利用OPAST这种子空间追踪算法进行盲空时多用户检测。
Communication systems can enhance their BER performance by using coherence detection only when they could make precise and real-time estimation of fading coefficients of multipath channel.
只有对信号在多径衰落信道中所经历的衰落做出准确实时的估计，系统才可以使用能够提高接收机误比特率性能的相干检测。
In this paper a fast algorithm for channel estimation in downlink TD-SCDMA systems has been proposed by analyzing the discrete-time base-band transmission model.
本文在分析TD _SCDMA系统下行链路基带离散时间传输模型的基础上，提出了一种下行链路信道估计的快速算法，并结合终端联合检测算法进行了计算机仿真。
Meanwhile, given the weak accuracy of LS algorithm, IPF-LS and IDF-LS are proposed which can enhance the accuracy of channel estimation by employing time-domain low-pass filter.
同时，针对梳状导频ls信道估计精度较低的情况，提出了通过时域低通滤波提高其估计精度的IPF -LS和IDF - LS改进算法。
Based on an auxiliary time-delay channel and ESPRIT approach, a new algorithm for wide band frequency estimation with sub-Nyquist sampling was proposed.
为了克服现有的欠采样频率估计方法存在的算法复杂、工程实现困难等问题，本文提出了一种基于虚拟仪器的三采样率切换的频率估计方法。
However, in the practical wireless environment, the number of channel taps and amplitude are all unknown and time-varying in whole process, thus typical estimation methods are not suitable.
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。
However, in the practical wireless environment, the number of channel taps and amplitude are all unknown and time-varying in whole process, thus typical estimation methods are not suitable.
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。
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