分析了现有的基于循环前缀的最大似然估计算法及其对频偏估计的跟踪。
Secondly, The ML algorithm based on CP in being and its tracking performance are analyzed.
基于循环前缀的同步算法实现简单，精度较高，但其仍然是一种半盲同步。
The synchronization algorithm based on the cyclic prefix is simple to achieve, and has a high-precision, but it is still a semi-blind synchronization.
基于循环前缀的同步算法实现简单，精度较高，但其仍然是一种半盲同步。
Under the basis of the existing cyclic prefix (CP) based timing synchronization method, we proposed a new blind timing synchronization method using adaptive beamforming.
提出了一种新的无线信道下基于循环前缀的正交频分复用系统符号定时同步算法。
A symbol timing algorithm for orthogonal frequency division multiplexing (OFDM) systems with the cyclic prefix under wireless channels is proposed.
在保持子载波数恒定的条件下减少循环前缀的长度，并推导出最优分集合并系数。
We reduce the length of cyclic prefix (CP) while the number of carriers remains invariable and the optimal diversity combination coefficients were deduced.
在OFDM系统中，时域均衡器用来抵消因循环前缀长度不足而引起的码间串扰。
Time-domain equalizer (TEQ) is an effective technique to combat ISI caused by inadequate circular prefix (CP) length in OFDM systems.
而且，循环前缀的引入消除了符号间干扰(ISI)，避免了信道间干扰(ici)。
Moreover, serious ISI (Inter-Symbol Interference) and ICI (Inter-Carrier Interference) can be readily circumvented by introducing CP (Cyclic Prefix).
改进算法利用接收信号向量中的循环前缀与一个特定子向量作互相关来对信道作盲估计。
The improved algorithm uses cross-correlation between cyclic prefix and a special sub-vector from vector of received signal to implement channel blind estimation.
接着分析了保护间隔和循环前缀抗符号间干扰(ISI)和信道间干扰(ici)的性能。
Then analyzes the performance of overcoming inter symbol interference (ISI) and inter channel interference (ICI) of the guard interval (GI) and the cyclic prefix (CP).
本文提出两种新的用于循环前缀(CP)不足时正交频分复用(OFDM)系统的迭代均衡方法。
This paper presents two novel iterative equalization schemes for orthogonal frequency-division multiplexing (OFDM) systems when the cyclic prefix (CP) is not sufficient.
利用具有循环前缀和循环后缀的OFDM帧结构，该文提出了一种新的符号定时跟踪盲估计算法。
A new blind symbol timing-tracking algorithm is proposed, using the special OFDM frame structure with cyclic prefix and cyclic postfix.
在相干光正交频分复用系统中，本文提出了一种新型的基于循环前缀和虚载波的盲频偏估计方法。
A new blind frequency offset estimation method based on cyclic prefix and virtual subcarriers in coherent optical orthogonal frequency division multiplexing (CO-OFDM) system is presented.
仿真结果显示，该方法在迭代次数很小时性能便可接近带有循环前缀的STBC - OFDM系统。
Simulation results show that the performance of this method approaches that of the STBC-OFDM with cyclic prefix even if the number of iteration is very small.
在信道阶数未知情况下，对其导频采用循环前缀（CP）方式和补零（ZP）方式的性能做了比较分析。
The performances for both cycle prefix (CP) and zeros-padding (ZP) mode pilots are compared and analyzed in the case of unknown channel order (UCO).
重点分析了将循环前缀与导频子载波的冗余信息相结合的算法，相应地对原有算法的似然函数也进行了改进。
The emphases is the improvement to the quondam algorithm, namely, the hybrid maximum-likelihood estimation algorithm based on the information of both CP and pilot subcarriers.
目前，估计载波频率偏差和符号定时偏差的算法主要有数据辅助的方法和非数据辅助的方法以及基于循环前缀的算法。
Various existing synchronization algorithm to estimate symbol timing offset and carrier frequency offset can be classified into blind and pilot-aided methods and algorithm based on cyclic prefix.
均衡器采用SISOMMSETURBO均衡算法，并利用OFDM系统的循环前缀特性进一步降低算法复杂度。
SISO MMSE TURBO equalization algorithm is applied to equalizing section, and the characteristics of OFDM's cyclic prefix reduce the complexity of equalization further.
十分全面的OF D M源程序，分模块写的M文件，解压之后，运行主文件，有调制解调，加入循环前缀。功能全面。
Very comprehensive OFDM source code, sub module to write the m file, after extracting, running the main file, there is a modulation and demodulation, to join the cyclic prefix.
对于传统的OFDM系统来说，如果循环前缀的长度大于信道的时延扩散值，则可以通过简单的频域均衡来解调OF DM信号。
If the length of its cyclic prefix is larger than the delay spread of transmission channel, we can get a simple frequency equalizer to demodulate OFDM signal.
粗频偏估计算法基于DAB信号所特有的相位参考符号（PRS），细频偏估计算法基于OFDM 信号所特有的循环前缀（CP），对其它采用OFDM 技术的系统具有很好的通用性。
The algorithm for coarse estimation is based on the PRS that is only contained in DAB signal, while the algorithm for fine estimation is based on CP, which could also be used in other OFDM systems.
使用带有repeat前缀的字符串指令将该函数优化成一个非常紧密的循环。
This function is optimized as a very tight loop using string instructions with the repeat prefix.
使用带有repeat前缀的字符串指令将该函数优化成一个非常紧密的循环。
This function is optimized as a very tight loop using string instructions with the repeat prefix.
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