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And in the uplink, the performance of the multiuser detector is better, but the large channel estimation error will bring performance degradation. 而上行信道多用户检测器的性能也较好;但是多用户检测器会受较大的信道估计错误影响而性能降低.
Following is an analytical expression to calculate the BER of M-QAM under Rayleigh channel when channel estimation error exists. 提出了计算瑞利信道下存在信道估计误差时M-QAM的误比特率的解析表达式。
However, OFDM is sensitive to synchronization error and channel estimation error and it has the weakness of the high Peak-to-Average Power Ratio (PAPR) of the transmitted signal. 但是,OFDM不仅对于同步误差和信道估计误差非常敏感,而且还伴随发射信号高峰平比(PAPR)的缺点。
The simulation results show that, if the variance of channel estimation error is less than 10-4, the 16QAM system can achieve the preferred BER performance similar to the one with perfect channel estimation. 本文的仿真分析显示,当信道估计误差的方差小于10-4时,16QAM系统可以获得接近理想信道估计时的误码率性能,这一结果具有重要实用意义。
Regardless of the impact of channel estimation error,performance comparison with conventional MMSE and Decorrelation（DEC） multiuser detection is demonstrated under different users. 在不考虑信道估计误差的情况下,仿真了不同用户数下该方案与传统解相关和最小均方误差多用户检测的性能比较。
Jakes channel model was adopted in the design and channel estimation error and time delay of feedback channel were considered.An optimum precoder was designed under MMSE criterion. 用Jakes信道模型描述MIMO信道，假定接收端通过最大似然估计方法估计信道，并通过反馈信道发送到发射端，发射端和接收端根据各自的信道状态信息利用贝叶斯准则分别设计了MMSE意义下的最优的处理矩阵。
The principle and simulation results indicate that channel estimation error brings improvement or decrease in SNR of extrinsic information, thus decoding is accelerated or destroyed. 理论和仿真得出了以下结论信道估计误差可带来译码过程外部信息信噪比的提高或降低,由此加速成功译码或者导致译码失败。
In order to eliminate the rest ISI and ICI, a new optimum precoder design method was given with the consideration of channel estimation error and changes caused by time deday of feeback channel. 本文考虑到信道估计误差和反馈信道时延带来的变化，用信道变化统一描述，给出了最大信道变化意义下的最优预编码器的设计方法。
In this paper, the impact of channel estimation error on the performance of multiuser Multiple-Input Multiple-Output (MIMO) transmission based on limited feedback information is analyzed. 该文针对存在信道估计误差的有限反馈多用户多输入多输出(MIMO)传输性能进行分析。
Channel Estimation Error of MISO Systems MISO系统信道估计误差的影响比较
Effect of channel estimation error and delay on BER performance of adaptive Turbo coded modulation 信道估计误差与延迟对自适应Turbo编码调制的误码率性能影响
channel estimation error 信道估计误差
In this paper, effect of channel information estimation error on the performance of LDPC-OFDM system is analyzed . 为此,研究了信道估计误差对LDPC-OFDM系统性能的影响。
All of these make the reality of semiblind channel estimation to be possible. 这些措施使得半盲信道估计方法的实用化成为可能。
Firstly, a computationally simple blind channel estimation method is proposed. 首先，文中提出了一种计算复杂度较低的信道盲估计方法。
The simulation results show that the performance of uncoded Symbol Error Rate (SER) can reach the bound of ideal channel estimation at the proper step size. 仿真结果表明，选择合适的步长，算法误符号率性能基本接近理想估计的性能界。
Chapter 4 and chapter 5 discuss the impact of load estimation error on DAP protocol and the load estimation algorithm. 第四章和第五章分别就信道负载估计误差对动态接入概率协议性能的影响和信道负载估计算法的角度阐述。
The problem becomes how to choose the bucket boundaries to minimize the estimation error for a given number of buckets. 于是，这个问题就转变成，我们要如何去决定最佳格子的边界而使得压缩的误差是最小。
Proposes a novel channel estimation algorithm for multi-carrier code division multiplex access (MC-CDMA) systems on the uplink. 摘要提出了一种新颖的适用于多载波码分多址接入(MC-CDMA)系统上行链路的通道估计算法。
Time delay estimation error may decrease the linearization performance of adaptive predistortion for radio frequency (RF) power amplifier. 摘要延时估计偏差通常会严重影响射频(RF)功率放大器预失真技术的性能。