subcarrier channel
英
美
网络 副载波通道
双语例句
- Improved subcarrier grouping channel estimation algorithms in MIMO-OFDM systems
MIMO-OFDM系统中基于子载波分组信道估计的改进算法 - Based on the analysis of bit error rate lower bound for the ORC technique of the MC-CDMA systems downlink in the frequency nonselective Rayleigh fading channel, an enhanced ORC technique that omits the weakest subcarrier ( the subcarrier with the smallest channel fading factor) is proposed.
本文基于对频率非选择性Rayleigh衰落信道中采用ORC技术的MC-CDMA系统下行链路误码率下边界的分析，提出了忽略最弱子载波（信道衰减系数最小的子载波）的改进ORC检测方案（EORC）。 - Simulation results show that subcarrier grouping just has a little influence on system performance. Meanwhile the imperfect channel estimation has little effects on the present algorithm.
模拟结果表明引入子载波分组后系统性能依然保持良好，并且信道估计偏差对本算法的影响较小。 - Performance Analysis of Subcarrier Atmospheric Laser Communication System over Gamma-Gamma Channel
无线光通信副载波系统基于Gamma-Gamma信道的性能研究 - In the frequency domain pilot channel estimation, this thesis studies the pilot subcarrier and data subcarrier channel estimation algorithms.
在基于频域导频的信道估计中，研究了导频子载波处的信道估计方法和数据子载波处的信道估计方法。 - In the subcarrier and power allocation process, the allocation is based on both the data rate which is the result of scheduling, and the channel gains.
在子载波与功率分配过程中，是以用户在调度后的数据速率和信道增益为依据进行分配。 - This paper reports a 12-channel FM-video subcarrier multiplexed ( SCM) lightwave system utilizing the optoelectronic devices all made in China and gives initial experimental results of field transmission of 7 channel FM-video.
本文报道了一个利用国产光电器件可同时传输12路彩色电视信号的调频（FM）副载波复用（SCM）光纤传输实验系统，同时给出了现场传输7路调频卫星电视信号的初步实验结果。 - For SCM/ WDM optical fiber communication systems, nonlinear interference between subcarrier channels is severe because channel spacing is very narrow.
在SCM/WDM光纤通信系统中由于各相邻射频信号的信道间隔非常窄，因而光纤的非线性效应对系统的影响很严重。 - For SCM/ WDM system, the nonlinear interference between subcarrier channels is severe because the channel spacing is very narrow and the interference components fall into the signal frequencies.
在SCM/WDM光纤通信系统中，由于相邻光波信道的间隔非常窄，所以相邻光波信道间的非线性效应很严重而且产生的干扰信号会落入有用信号的信道内形成寄生干扰。 - A Pilot Subcarrier-based Joint Frequency Offset Correction and Channel Estimation Method for OFDM Systems
OFDM系统中一种基于导频子载波的联合频率偏移纠正和信道估计方法 - Through the perfect design of transmit preprocessing weights based on the subcarrier channel at the transmitter, this scheme decomposes the multiuser MIMO downlink system into parallel independent single-user MIMO downlink system and assures the good elimination of co-channel interference at each mobile terminal.
通过基站端良好的基于子载波信道的预处理矢量设计，将下行多用户MIMO系统转换为并行独立的单用户MIMO系统，确保每终端用户同频干扰的良好去除。 - Atmospheric sodium measurement at Hefei by lidar Performance Analysis of Subcarrier Atmospheric Laser Communication System over Gamma-Gamma Channel
用激光雷达探测合肥高空钠层的变化无线光通信副载波系统基于Gamma-Gamma信道的性能研究 - Then, the above decoder is used at each flat fading subcarrier channel and is extended to the frequency-selective fading channels combining with OFDM technique.
然后，结合OFDM技术，基于每个平坦衰落子载波信道运用上述新解码器设计方案，将其推广至时频选择性衰落信道、多用户上行系统。 - By using the correlation property of precoded subcarrier signals, we only need to estimate one subcarrier channel, and channels of other subcarriers can be recovered via simple cross-correlation operations.
借助于编码产生的子载波信号相关性，只需要估计一个子载波信道，就可以通过简单的互相关操作恢复其它子信道。 - Then, in order to achieve reasonable fairness among the multicast groups, a subcarrier allocation scheme with QoS guarantee is proposed according to the limited channel information and the QoS requirement of different multicast services.
然后根据有限信道信息和不同业务的QoS需求，提出了基于QoS保证的子载波分配算法，实现了合理的多播业务之间的公平性。 - The dissertation presents subgroup channel estimation algorithm for the Subcarrier Grouping MIMO-OFDM systems. The criterion of optimal pilots design is suggested and the complexity analysis of scheme is provided. Simulation results show the performance of system based on the MSE under multipath fading channel.
针对分群子载波MIMO-OFDM系统，提出基于独立子群的信道估计方法，给出导频序列的设计规则以及算法复杂度分析，计算机仿真给出了该算法在多径衰落信道下基于最小均方误差准则的分析结果。 - A blind parameter estimation algorithm is proposed to estimate OQAM signal parameters such as symbol period, subcarrier number under the environment of fading channel, which exploited the second order cyclic cumulant and SCF of OQAM signal.
利用衰落信道下OQAM信号二阶循环累积量和循环谱特征，提出了一种参数盲估计算法，实现了对OQAM信号符号周期、子载波数等参数的估计。 - From the selection criterions, the source or relay adaptively choose the best scheme for every subcarrier pair according to the channel condition.
基于上述选择方案，源端和中继端能够根据信道状态为每个载波对选择最佳的转发方式。 - Based on channel gain of every subcarrier, we use relay selection algorithm to choose relay node for each subcarrier, and then calculate the equal channel gain.
以各个子载波的信道增益为基础，通过中继选择算法，为各个子载波选择合适的中继节点，计算其等效信道增益。 - Combined antenna and subcarrier allocation system scheduler means that the system can adaptively select the antenna and sub-carrier for different users according to wireless channel fading characteristics.
天线和子载波联合分配的意思是系统调度器能够根据不同用户的无线信道衰落特性自适应地为每个用户选择天线和子载波来进行信息的传输。 - Based on the analysis on correlation of subcarrier channels and correlation of subcarrier signals, we propose two blind channel estimation algorithm structures for MIMO-OFDM systems.
借助于对MIMO-OFDM系统子载波信道和子载波信号相关特性的研究，论文提出了两种新的MIMO-OFDM盲信道估计算法结构。 - We adopt frequency-domain subcarrier cluster as pilot symbols, this pilot mode takes the distribution property of ICI into consideration and is therefore suitable to channel estimation of MIMO-OFDM in doubly selective channels.
我们采用频域子载波簇作为导频，该导频模式考虑了ICI的分布特征因此适合于双选择性衰落信道下MIMO-OFDM系统的信道估计。