集合誤碼率 的英文怎麼說

中文拼音 [jígěwùmǎlǜ]
集合誤碼率 英文
aggregate error rate
  • 集 : gatherassemblecollect
  • 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
  • 誤 : Ⅰ名詞（錯誤） mistake; error Ⅱ動詞1 （弄錯） mistake; misunderstand 2 （耽誤） miss 3 （使受損害...
  • 碼 : Ⅰ名詞（表示數目的符號或用具） a sign or object indicating number; code Ⅱ量詞1 （指一件事或一類的...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 集合 : 1 （聚集） gather; assemble; muster; call together 2 [數學] [自動化] [計算機] assemblage; set; co...
  1. The optimum multiuser detection can obtain the best bit error rate theoretice. but its computing complexity increases with the number of users exponentially and belongs to np maturity problem. so much research fasten on the multiuser detection with low computing complexity. cdma multiuser detection is in fact a combination optimize problem

    基於最大似然準則的最佳多用戶檢測器在理論上可以獲得最小的誤碼率，提供最佳的檢測性能，但其計算復雜度隨用戶數呈指數增長，屬于np完備問題，因此大量的研究集中於發展計算復雜度較低的次最佳多用戶檢測器，使其具有合理的計算復雜度。
  2. Errors and ber performances with various system parameters are analyzed and compared, so the validity of the amendment is proved. after channel estimations, various diversity combinations are discussed with various user numbers and snr. and some useful conclusions are achieved

    在通道估計的基礎上，分析和比較了各種分集合併演算法在不同的用戶數和信噪比下的實現復雜度和誤碼率性能，得出了有益的結論。
  3. 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。
  4. It has been proven that the spread spectrum technologies have good capabilities of overcoming isi in electromagnetic wireless channel. the feasibilities of their applications to underwater acoustic channel have been analyzed, the frequency hopping technology is chosen. instead of using time - frequency diversity, convolutional coding and viterbi decoding are employed to combat signal fading, consequently the bit - rate and bit - error - rate performance of the underwater acoustic voice communication system can be balanced and controlled

    由於擴頻技術在抗碼間干擾方面具有優良的特性，因此在分析了各種擴頻技術于本研究應用的可行性之後，確定了跳頻技術作為具體實現方案；在克服幅度衰落方面，選用卷積編碼和維特比譯碼方法來替代原有的分集技術以綜合調節系統的通信速率與誤碼性能，達到差錯可控的目的。
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