subchannel 中文意思是什麼
音標 ['sʌb'tʃænəl]
subchannel
解釋
分支電路-
Spatial subchannel allocation algorithm based on multiuser mimo ofdm systems
系統的空間子通道分配演算法 -
Bits transmitted by every subchannel are determined by its value of signal to noise ratio ( snr ), and the unwanted power caused by noise is distributed to every subchannel, so their damage is weakened
它根據各個子通道信噪比的情況確定其傳送比特數，由噪聲引起的干擾功率被分散到各個子通道中，降低了其引起的干擾。 -
With the development of vlsi and dsp technology, dsl is getting more and more mature. adsl implement a / d, d / a conversion, dmt & tcm and some necessary coding, by this way, adsl can achieve high efficiency of bandwidth and guarantees credibility we use itex adsl development tool ( iadt ) to simulate the central office, by this way, we can observe the performance of the adsl, including the overall performance monitor and subchannel performance monitor, we also present the arithmetic of every modules of the adsl
在接入骨幹網的策略上，由於atm組網的靈活性，方便性，所以在adsl接入網的局端採用atm的uni （用戶?網路介面） ，利用atm在高速交換網路中的優勢以及以往在電信運營中方便的用戶認證機制， adsl在用戶認證關聯上採用pppoveratm （ rfc2364 ）的方案，總體上說， adsl接入網的協議棧可以表述為tcp ipoverpppoveratm 。 -
Adaptive subchannel allocation and antenna selection in mimo - ofdm system
系統中的自適應子通道分配和天線選擇 -
Road group and system are definite and reasonable, subchannel road net for people and vehicle is considered in community planning, green plant system ' s natural division brings up sight blending to community interior view
道路組團體系明確合理，人車分流道路網的社區規劃，綠植體系的自然分景做到社區內景觀的情景交融。 -
In order to make the mobile know its subchannel allocation result, a blind maximum - likelihood subchannel detection algorithm is proposed, which can improve the system efficiency and has been proved to be feasible in practice
為此我們提出了盲最大似然子通道檢測演算法，該演算法在實際中是切實可行的，並能使系統的效率有很大提高。 -
Based on the criterion of maximizing the total average signal to interference plus noise ratio ( sinr ), the optimal subchannel allocation strategy is obtained in theory when random signature sequences are used. for its implementation, an iterative algorithm is proposed, which is similar to the water filling principle. by using the proposed algorithm, we obtain significant improvement on the performance of the system, and the transmission quality can be guaranteed
根據最大信號干擾加噪聲比原理，分析得出了隨機特徵碼條件下最優的子通道分配策略，並提出了一種類似於灌水原理的子通道分配演算法，該演算法能在保證各個用戶傳輸質量的前提下，使系統的整體性能接近最優。 -
In this dissertation, we investigate in depth the optimal allocation of the various system resources including subchannel, power and transmission rate. first, a multicarrier ds - cdma system model for wideband access is proposed, according to the characteristic of wireless channels, the subchannel allocation is investigated in forward links of the multicarrier ds - cdma system
本文對主要的系統資源，即通道、功率和傳輸速率的分配優化問題進行了深入的研究，主要包括：首先，在分析無線通道傳輸特性的基礎上，提出了一種基於多載波ds - cdma的支持寬帶多業務接入的系統模型。 -
Based on the communication engineering application, several practical problems been discussed after introducing multi - carrier adaptive multilevel modulation principle. in thesis, alterable channel model been designed and realized dynamic choosing modulated method aggregate to subchannel, and theoretic analysis and computer simulink keep consistent
本章在詳細介紹多載波自適應多元調制原理的基礎上討論了通信工程中的幾個實際問題，構造了變化的通道模型並基於此實現子通道調制方式集的動態選擇，模擬結論與理論分析一致。
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