multicarrier 中文意思是什麼
multicarrier
解釋
多載波-
This thesis researched the time synchronization method for 2d - ss system, and deeply discussed the bit error rate ( ber ) performance of multicarrier domain spread spectrum chip - level differential detection ( mc - ss - cldd ) in the presence of multi - user interference
本論文從多載波擴頻通信系統出發，提出了廣義二維擴頻系統的同步演算法，並對多載波頻域擴頻碼片級差分檢測技術在多用戶情況下的系統性能進行了深入的研究。 -
In this paper, after introduction of the code division multiple access ( cdma ) and orthogonal multicarrier ( mc ) technique, the system model of mc - cdma is analyzed and the bit error rate ( ber ) performance in downlink and uplink channel is shown in awgn channel by computer simulation
本文在碼分多址技術和正交多載波技術原理基礎上，分析了高斯白噪聲通道中多載波碼分多址（ mc - cdma ）系統的數學模型，並且使用不同的擴展碼對下行通道和上行通道誤碼率性能分別作了計算機模擬分析。 -
Magnus sandell et al. ml estimation of timing and frequency offset in multicarrier systems. research report, div. of signal processing, lulea university of technology, sweden
作者簡介：韓重陽（ 1981 ? ） ，男，河南駐馬店人，東南大學無線電工程系2005級碩士究生，研究方向為通信與信息系統。 -
In ofdm tech, multicarrier transmission with fft is used to combat with channel fading. in vsb tech, an adaptive equalizer is used to combat with channel fading
在ofdm技術中，以多載波傳輸結合fft技術來對付通道衰落，在vsb技術中以自適應均衡器來對抗通道衰落。 -
Orthogonal frequency division multiplexing ( ofdm ) is a special case of multicarrier transmission, in which a single high data rate datastream is transmitted using a number of lower data rate subcarriers
Ofdm （正交頻分多路復用）是一種特殊的多載波傳輸方式，由於它使用一系列低速子載波并行傳輸數據，使得傳輸速率得到大幅度提高。 -
Orthogonal frequency division multiplexing ( ofdm ) is a special case of multicarrier transmission, in which a single high rate datastream is transmitted using a number of lower data rate subcarriers
Ofdm （ orthogonalfrequencydivisionmultiplexing正交頻分多路復用）是一種特殊的多載波傳輸方式，由於它使用一系列低速子載波并行傳輸數據，使得傳輸速率得到大幅度提高。 -
Uplink equivalent space - time multiuser detection for multicarrier code - division multiple access systems
系統盲空時通道估計及多用戶檢測 -
Uplink space - time channel blind estimation for space - time coded multicarrier code division multiple access systems
空時編碼多載波碼分多址系統上行空時通道盲估計 -
With the support of hardware devices such as dsp chip, this arithmetic has effective application on complicated practice source coding. this paper alse applies wavelet to multicarrier modem / demodem transfer. the use of the induced wavelet package improves this arithmetic to search best wavelet package basis, and boosts up the support to multirate
本文同時應用小波變換到多載波調制解調傳輸方面，通過推導出誘導小波包，改進最優小波包基搜索演算法，增強了對多碼率業務的支持性，在多載波傳輸系統中，是有效的提高信干比的方法。 -
We firstly introduced the research background and the characteristics of multicarrier wireless communications, and summarized the questions needed to be further researched
論文首先對論文工作的研究背景進行了簡述，介紹了多載波通信系統的特點，總結了需要進一步解決的問題。 -
On the performance of multiuser diversity in multicarrier systems with delay - constraints
時延約束多載波系統中多用戶分集性能 -
In this thesis, a multicarrier modulation high bit - rate underwater acoustic communication system was designed and constructed after analyzing those effects
本論文在分析這些因素的影響之後，設計並製作完成了一個多載波高速水聲通信系統。 -
In this thesis, the characteristics of underwater acoustic channel were analyzed, the mcm technique and the lfm signal which were used in the multicarrier modulation high bit - rate underwater acoustic communication system was discussed in detail, the important parts in system designing were examined
論文對水聲通道特性進行了分析，就多載波高速水聲通信系統中用到的多載波調制技術、線性調頻信號進行了詳細論述，論述了系統設計中的重要環節。 -
Achieving high speed uwa underwater acoustic communication with adaptive momc multimode orthogonal multicarrier technology
自適應多制式正交多載波高速水聲通信技術研究 -
A non - linear mapping method for reducing the transmitted signals amplitude peak in multicarrier system
系統發送信號峰值的非線性映射方法 -
With the downlink simulation model constructed, performance of wideband cdma under different radio propagation environment and vehicular speed is simulated. based on system model of mc ds cdma under flat fading channel with relative shifts of spreading sequences within 1 chip and frequency selective fading channel with arbitrary relative chip shifts, performance of multicarrier cdma system with go sequences under different radio environment is investigated
基於多載波直接序列碼分多址在乎坦衰落通道中序列偏移小於1個碼片及在頻率選擇性衰落通道中偏移任意個碼片的系統模型，本文還分析了採用廣義正交序列的多載波碼分多址系統在不同無線傳播環境下的性能。 -
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。 -
The system employs multicarrier modulation ( mcm ) technique as the modulation method, and linear frequency modulation ( lfm ) signal as the synchronization signal and digital signal processor ( dsp ) as the hardware ' s core chip
該系統選用多載波調制技術進行調制，選用線性調頻信號為其同步信號，選擇數字信號處理器為硬體核心晶元。 -
Multicarrier orthogonal frequency - division multiplexing ( ofdm ) systems have been widely researched in recent years because of its good anti - multipath characteristic when easily equalized
摘要近年來，多載波ofdm系統因其均衡簡單且能有效地抗多徑干擾而受到廣泛地研究。 -
Capacity and performance of mobile radio systems essentially depend on the choice of the multiple access scheme. a novel and promising wireless digital modulation / multiple access technique called multicarrier cdma is studied in this thesis, including reducing the peak - to - average ratio, which is one of its key techniques. mc - cdma is combination of ofdm and cdma, thus advantages of both techniques are exploited
移動通信系統的容量和性能在很大程度上取決于多址方案的選擇，本文主要討論了在通信領域新興的擴頻多址方式一多載波cdma （ mc - cdma ） ，並對降低mc - cdma系統峰值平均功率比這一關鍵技術進行了研究。
分享友人