ofdm 中文意思是什麼
ofdm
解釋
第18章-
The tracking scheme can track the variance of the mimo channel and further reduce system cost. finally, we introduce an mqam sm - ofdm adaptive power and bits allo - cation scheme
以此為基礎的通道跟蹤方案能進一步減少系統開銷，而且能很好地跟蹤mimo通道的變化。 -
Application of antenna arrays to downlink of ofdm systems
系統下行鏈路中的應用 -
Optimum beamforming algorithm for pre - fft ofdm adaptive antenna array
自適應天線陣的最佳波束成形演算法 -
A comparative analysis on time synchronization schemes in ofdm systems based upon dispersive cannel model
系統中時間同步方案的比較分析 -
Side information with concurrent - pts signals in mimo - ofdm
邊帶信息傳輸技術探討 -
The synchronization problem research of ofdm in fh communication system
在跳頻通信系統中的同步問題研究 -
A frequency domain ici mathematic model for ofdm systems
載波間干擾的頻域數學模型 -
Application of ofdm for meteor burst communications
在流星余跡通信中的應用 -
As a combination of ofdm with space - time coding technique, mimo - ofdm becomes more and more important in the future wireless communication systems, the mimo - ofdm system can not only effectively enhance the transmission rate and capacity of the wireless communication system but also greatly mitigate the effections of mufti - path fading and interfere
Mimo - ofdm技術將ofdm與空時編碼技術有機的結合在一起，能夠大幅度的提高無線通信系統的通道容量和傳輸效率，並能有效的抵抗多徑衰落、抑制干擾和噪聲。 -
So, radiolocation technique in the communication system based on ofdm modulation was investigated in this paper
為此本文結合兩者對基於ofdm調制的通信系統中的無線定位相關技術進行了研究和探討。 -
In this paper, the radiolocation technique and principium of ofdm in the cell - communication system were introduced firstly, and sensitivity of ofdm system to synchronization was analyzed. then, two methods of timing synchronization based on the cyclic prefix and pilot sequence were introduced, and a novel timing synchronization method based on pilot sequence was presented, which provided a correlation peak with pulse shape
由於ofdm系統中的定時同步要求和無線定位中的測時測距在本質上是一致的，所以本文緊接著分析了基於循環前綴和導頻序列的兩種定時同步方法，並提出了一種新的基於導頻序列的具有脈沖形狀相關峰的定時同步方法。 -
Uplink time and frequency synchronization algorithm in ofdm - cdma systems
系統的時頻同步演算法 -
By using ofdm technology, we can redu ce the baud rate with a high frequency spectrum utility factor. another advantage of this technology is that the transmission can combat the intersymbol interference ( isi ) at the receiver without complex adaptive equalizer
Ofdm既有較高的頻譜利用率，也有效地降低了碼速率，在不使用復雜的通道均衡技術的條件下仍然可以較好地克服接收時由多徑效應帶來的碼間串擾（ isi ） 。 -
In this thesis, for the merits of high frequency spectrum utility factor and high - speed data communication, the ofdm is introduced into the underwater acoustic communication. combined with fec to combat the frequency - selective fades and isi in the underwater acoustic channel, high speed data transmission is realized by employing ofdm technology
本研究嘗試將ofdm技術引入水聲通信領域，利用該技術頻譜利用率高，多載波并行傳送的特點，結合通道編碼，以克服水聲通道多徑干擾引起的頻率選擇性衰落和碼間干擾，獲得高速率數據傳輸。 -
Adaptive ofdm ; minimum average ber ; adaptive algorithm
自適應ofdm最小平均誤碼率自適應預處理演算法 -
Spatial subchannel allocation algorithm based on multiuser mimo ofdm systems
系統的空間子通道分配演算法 -
Performance analysis of adaptive power allocation algorithm in mimo - ofdm system
系統中自適應功率分配的演算法性能分析 -
Base on the study of wireless communication channel characteristics, the article gives an analysis on the existing problems and proposes a solution : implanting the ofdm technique in a software radio platform
基於對無線移動通道特性的研究，本文對存在的問題進行了分析，提出了在軟體無線電平臺上實現ofdm系統的解決方案。 -
Base on the study of long distance wireless communication channel characteristics, the thesis gives an analysis on the existing problems and proposes a solution : implanting the ofdm technique in communication system modulator
本文從對無線遠距離移動通信通道的特性研究出發，分析了其存在的問題。然後針對問題提出了解決方案? ?採用ofdm技術來設計通信系統的調制器。 -
In this paper on the basis of analyses about wireless channel characteristic, we have done a wide research into new technologies and some information transmission scenarios in wlan, including a detailed discussion of the most competitive ofdm - cdma technique
本文針對無線局域網中的無線通道傳輸特性，對各種新技術和信息傳輸方案進行了研究；對最具競爭力的ofdm - cdma技術進行了探討。
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