channel subcarrier
英
美
【电】波道副载波
双语例句
- Technical specification for NICAM-728 digital audio signal transmission with satellite TV channel subcarrier
GB/T16812-1997NICAM-728卫星电视信道副载波传送数字声技术规范 - In a multipath environment an uncoded OFDM transmission system has a bit error rate ( BER) comparable with a narrowband radio channel because the fading of each subcarrier is frequency nonselective.
在多路径环境下，因为每一个副载波的衰落是不能进行频率选择的，一个无编码正交频分复用传输系统与窄带无线电传输信道相比较，有一个误码率问题。 - 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）。 - 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。 - A design for time-frequency transmission via Optical Fiber TV channel, a delay determination on closed-loop Optical Fiber TV channel and a new method of Two-way time Transmission using Expand-frequency Subcarrier Multiples System are described in this paper.
描述了一种利用光纤TV信道传递时间、频率的初步方案和光纤闭环TV信道时延的测定及用扩频副载波复用系统进行双向时间传递方法。 - However, while using multiple subcarriers ( OFDM), feeding back all the Channel Quality Information ( CQI) per user, per subcarrier would waste a substantial amount of uplink resource and therefore decrease the spectrum efficiency.
然而，在多载波（OFDM）的架构下，反馈全部用户的所有信道质量信息（CQI）将占据大量的上行资源，从而降低了实际频谱效率。 - First, the opportunistic relaying strategy is given by making use of the equivalent channel power gain for every subcarrier. Second, a low-complexity power allocation algorithm is proposed with KKT optimal condition and equivalent water-filling algorithm.
首先提出了一种基于等效信道增益的机会中继选择策略，然后在此基础上通过KKT优化条件以及等效注水算法，给出了分布式节点最优功率分配算法。 - But the base station needs to know the channel information of every subcarrier on the user side before it starts the resource allocation.
但是，基站端进行资源分配时，都需要知道用户端每个子载波上的信道信息。 - 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。 - Assuming exact CSI ( Channel State Information) is obtained by transmitter, the adaptive subcarrier group allocation and bit loading algorithm for the purpose of transmit power minimization was presented.
在发射端准确获取各个用户反馈的全部信道信息下，提出了以最小化系统总体发射功率为目标的自适应子载波组分配算法、比特加载算法。 - This paper mainly discusses two improved channel estimation algorithms in OFDM system with virtual subcarriers, one is based on virtual subcarrier pilot interpolation, and the other is based on iteration in time domain.
本文研究了含虚载波的系统中两种改进的信道估计算法，一种基于虚载波导频插值，一种基于时域迭代。 - 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。 - This chapter also simulates the effect of different channel parameters, such as the number of multi-path, maximum delay spread, subcarrier bandwidth, on the scheme performance. This is capable of guiding parameter selection when realizing the scheme in the actual system.
论文还通过仿真分析了各种信道参数，如：多径数目、最大时延扩展、子载波带宽等，如何影响方案性能，为方案实施时的参数选择提供重要参考。 - In wireless communication environment, when users change their locations the channel environment varies, so is it with the channel environment of OFDM subcarrier.
在无线通信环境中，随着用户位置的变化，它所处的信道环境也将不同，则OFDM的各子载波的信道环境也不一样。