ber bit error rate 中文意思是什麼

ber bit error rate 解釋
比特誤碼率
  • ber : 柏林
  • bit : n 1 少許，一點兒，一些；（食物的）一口，少量食物。 〈pl 〉 吃剩的食物；小片。2 〈口語〉一會兒，一...
  • error : n. 1. 錯誤；失錯。2. 謬見，誤想；誤信；誤解。3. 罪過。4. 【數學】誤差；【法律】誤審，違法；（棒球中的）錯打。adj. -less 無錯誤的，正確的。
  • rate : n 1 比率，率；速度，進度；程度；（鐘的快慢）差率。2 價格；行市，行情；估價，評價；費，費用，運費...
  1. In order to combine the study of the ds - ss communication system ’ s availably jamming, the whole ds - ss communication system is modeled and simulated, including the modulation of the ds - ss signal, channel transmission, synchronal demodulation of signal and statistic of the bit error rate ( ber )

    為結合直擴通信系統的有效干擾研究工作，建立了直擴系統從信號的調制產生，通道傳輸、信號同步解擴解調和誤碼率統計的全過程模擬系統。
  2. In addition, the beamforming techniques for cdma systems are discussed emphatically. the algorithm based on code filtering is deduced in detail theoretically, and the performances such as convergence and bit error rate ( ber ) are simulated. meanwhile, we improve a decision - projected algorithm based on least - mean - square ( lms ) error

    論文重點討論了cdma系統的波束形成技術，在理論上詳盡地推導了基於擴頻碼濾波的波束形成演算法，對其收斂性、誤碼率等進行了計算機模擬；針對基於最小均方（ lms ）誤差的一種判決映射演算法進行了改進。
  3. 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。
  4. 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。
  5. The communication system ' s performance is briefly analyzed by channel capacity, which is a function of bit error rate ( ber ). the decision rule is based on the most likelihood method. for reproducing the original binary signals more correctly, time scale transformation method and the approach of ensemble average probability of error bits are introduced

    通過理論分析和模擬實驗，本文研究了這個非線性數字通信系統性能，給出了誤碼率和通道容量公式，提出了系統參數調節方法，採用最大似然法設計了適合這個系統輸出的判決規則。
  6. By calculating parameters including the link length, the azimuth angle, the elevation, the optical power that the inter - satellite optical cdma communication system will receive, the variation range of the azimuth angle and the elevation from the optical antenna of atp are understood well. by analyzing the factors to impact bit - error - rate ( ber ) from the received power, multi - user disturbing, background noise, wavelength, bit rate etc, measures to guarantee high performances of the system are obtained, especially those for smoothing the fluctuation of the received optical power from host platform vibration

    分析研究了衛星光cdma通信系統中衛星仰角、方位角和距離，給出了探測器能夠接收到的光功率以及atp子系統捕獲及跟瞄的范圍;對衛星光cdma通信系統性能模型和基於衛星振動系統性能模型的研究，分析了多用戶干擾、接收光功率、背景光噪聲、振動偏差以及碼速率對系統誤碼率的影響，給出了相應的改進措施。
  7. We analyze how bit error rate ( ber ), average delay, and throughput of the two structures vary with the maximal number of transmission attempts, and find that syndrome - ahead structure is suited for short codes with poor error - correction capacity, while syndrome - behind structure is suited for long codes with powerful error - correction capacity

    分析了該harq的可靠性、時延和流量與最大重傳次數之間的關系，發現短碼長、糾錯能力低的碼宜採用前向校正子結構，而長碼長、糾錯能力高的碼宜採用後向校正子結構，二者具有互補性。
  8. According to similar ft3 frame format and its checkout mode of dnp data link layer, the relationship between fer ( frame error rate ) and ber ( bit error rate ), frame length is deduced. the computation formulas of average transmission times and repeat transmission times guaranteeing the correct transmission of telecontrol information are given as well

    根據dnp3 . 0規約數據鏈路層類ft3幀及其校驗方式，推導出幀傳輸失敗概率（誤幀率）與通道誤比特率和幀長的關系，同時給出平均傳輸次數和重復傳輸次數的計算公式。
  9. Recently, much interest of the coding community has focused around a new family of error - correcting codes, called turbo codes, whose perfor - mances in terms of bit error rate ( ber ) are close to the shannon limit

    Turbo碼作為一種新型的糾錯編碼類型備受通信界的注目，它的糾錯能力能夠接近shannon極限。 turbo碼自1993年由c
  10. When transmitting signal is below 500 kbps, increasing the system power can reduce the bit error rate ( ber ) for the signal suffering only flat fading

    當碼速率較低時（ 500kbps以下） ，信號受到平坦衰落，增大系統功率可以降低系統誤碼率。
  11. First of all, correlation properties of orthogonal variable - length spreading sequences are analyzed and new closed - form expressions of mai of the cdma systems are derived in terms of aperiodic partial correlation of variable - length sequences. then, the self - interference ( si ), mai and bit - error - rate ( ber ) performance of the desired user in a multi - rate cdma system are analyzed

    本文首先分析了正交變長擴頻序列的相關特性，導出了以變長序列非周期部分相關表示的cdma系統多址干擾（ mai ）新的分析表達式，並分析了多速率碼分多址系統中，期望用戶的自干擾（ si ） 、多址干擾和誤比特（ ber ）性能。
  12. In addition, bit error rate ( ber ) performance of the m - ary orthogonal spread spectrum system based on i bit quantization is analyzed in this paper and the formula of ber is obtained. by comparing it with other several systems, some concerned conclusions about this kind of system are gained

    為了進一步的降低系統的規模，本文還就基於硬判決解調的多進制擴頻系統的性能進行分析和研究，得出了同步捕獲性能和誤比特性能與用戶數及信噪比的關系公式，並將其與其它幾種系統進行了比較，得出了有關的結論。
  13. Similar to asama protocol, qasama protocol applies ppo and go algorithm, but qasama protocol also considers the requirements of packet delay, packet drop rate, bit error rate ( ber ), traffic capacity and channel utilization, and integrates these requirements into the slot allocation procedure

    在qasama協議中，綜合考慮了分組時延，分組丟棄率，誤碼率，業務容量以及通道利用率方面的要求，並將這些要求與多波束智能天線的特點及自適應時隙分配過程有機地結合起來。
  14. Performance simulation of the proposed estimator including mean squares error ( mse ) of channel and uncoded bit error rate ( ber ) have been taken, and the results show the estimator is efficient and very flexible

    對通道盲估計的均方誤差（ mse ）和由此演算法獲得的通道的狀態信息，對無編碼的ofdm系統進行解一調的誤比特率進行了模擬。
  15. Based on the obtained lower bounds on mean squared channel estimation errors, the limits on bit error rate ( ber ) for maximal ratio combining ( mrc ) with gaussian distributed weighting errors on independent and identically distributed ( i. i. d ) fading channels are presented

    通過對不同衰落通道多普勒譜的積分，求出了相應的通道估計均方誤差下界的閉合表達式，並在此基礎上得到了分集系統在獨立同分佈的衰落通道中採用最大比合併時的誤碼率下界。
  16. Distortion and gauss white noise distortion. the simulation of ideal system aims at absolutely clean channel, and the nonideal systems respectively set their channels as ricean channel ( multipath distortion channel ) and awgn ( gauss white noise distortion channel ). at the end of simulation, it use examining means of communication system as ber ( bit error rate ) analysis and eye diagrams analysis, then gives a summarize and a comment to the system

    模擬中的系統結構、模塊和傳輸速率的選擇符合標準的dvb1規范en300744 ，理想系統的模擬是針對完全乾凈的通道，而非理想系統分別將通道設置為hcean通道哆徑干擾通道）和awgn （高斯白噪聲通道） ，模擬最後用通信系統的檢測手段進行誤碼率分析和眼圖分析，並對該系統作了總結和評價，加深對了dvb1系統的信號處理過程的理解，明確了目前面臨的問題。
  17. Future mobile communications have to support the transmission of high rate data and multimedia applications in the radio spectrum, which is already extremely scarce. the basic idea of adaptive coded modulation is to maintain a constant throughput by varying the transmitted power level, symbol transmission rate, constellation size, coding rate or any combination of these parameters. thus, without sacrificing bit - error rate ( ber ), these schemes provide high average spectral efficiency by transmitting at high speeds under favorable channel conditions, and reducing throughput as the channel degrades

    自適應編碼調制（ adaptivecodedmodulation ， acm ）的基本思想是在不犧牲系統傳輸性能（比如ber ）為代價的前提下，通過單獨改變發送功率、波特率、編碼方案、碼率、調制方式，或者是綜合改變前面所述的各種參數，在有利的通道條件下，獲得較大的吞吐量，當通道質量下將時，相應地降低傳輸速率，最終達到提高平均頻譜效率的目的。
  18. The go sequences are applied to the high - order modulation qs - cdma systems, and for the mpsk and m - qam modulation scheme, the maximum allowable timing delays, the sir expressions and the bit - error - rate ( ber ) results are derived

    作者將go序列用於高階調制qs - cdma系統，獲得了採用mpsk調第vll頁西南交通大學博士研究生學位論文制和m一qam調制時系統最大允許時延限制條件以及s僅表達式。
  19. Aiming at the wireless optical channel and operation characteristics, carrier sense multiple access / collision avoidance ( csma / ca ) mac protocol is put forward taking into account the bit error rate ( ber ). this paper studies the protocol theory, access mechanism detailedly, and models the throughput performance, simulates and analyzes the performance. the paper analyzes the performance influence factors such as ber, transmit probability, number of the terminals, initial windows, retry limit and so on

    （ 2 ）針對無線光局域網的通道特性及業務特徵，在考慮通道誤碼率影響的基礎上，分析了基於載波監聽/沖突避免（ carriersensemultipleaccess / collisionavoidance ， csma / ca ）接入的無線光局域網mac協議，詳細闡述了協議原理和接入機制，用馬爾可夫模型對mac吞吐量性能進行了建模，並進行模擬計算和分析，詳細討論了在基本接入機制和rts / cts接入機制下，通道誤碼率、終端發送概率、終端數、初始化窗口、重傳極限等參數對吞吐量性能的影響，同時對兩種接入機制性能進行了比較分析。
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