mc-cdma 中文意思是什麼

mc-cdma 解釋
多載波代碼碼分多址接取方式
  • mc : 1. machine. 2. megacycle. 3. millicurie 毫居里（放射單位）。
  1. 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。
  2. Carrier synchronous performance analysis and simulation of mc - cdma system

    系統載波同步性能分析與模擬
  3. Based on in - depth study on the mc - cdma system structure, we proposed a combined power and rate control scheme for wcdma over fading channels

    在mc - cdma這種方案中，我們提出了功率控制優先於速率控制的演算法。
  4. The conclusion is identified by computer simulation. the paper studies a noncoherent demodulation based on differential encoding in mc - cdma system and makes computer simulation of ber performance compared with that of coherent demodulation based on perfect channel estimation

    研究分析了一種使用差分編碼的非相干接收mc - cdma系統，對頻率選擇性瑞利衰落通道條件下的誤碼率性能進行了計算機模擬，並且和基於理想通道估計的相干解調方案進行了比較。
  5. Then, we discuss the model of a 256 sub - carriers mc - cdma system and analyze ber performance in a frequency - selective rayleigh fading channel

    討論了一個256載波的mc - cdma系統的數學模型，分析了在頻率選擇性瑞利衰落通道中的誤碼率性能。
  6. 4. we propose that the best detection method for the uplink mc - cdma system is decorrelating - parallel interference cancellation ( dec - pic ) multiuser detection, and the best detection method for the downlink mc - cdma system is minimum mean square error combining ( mmsec ) single user detection

    提出上行通道mc - cdma的最佳檢測方法是解相關-并行干擾抵消多用戶檢測法（ dec - pic ） ，在下行通道mc - cdma的最佳檢測方法是最小均方誤差合併單用戶檢測法（ mmsec ） 。
  7. 3. we propose a new spreading sequence design scheme. in the uplink, using golay sequence, cinew sequence or zadoff - chu sequence, in the downlink, using wh sequence as the spreading sequence, we can control the papr of mc - cdma below 7db and ber below le - 3 ( snr = 20db )

    提出mc - cdma中擴頻序列的新型設計方案，在上行通道，採用golay序列， cinew序列或zadoff - chu序列，在下行通道，採用wh序列作為擴頻序列可以控制mc - cdma峰平比在7db以內，在信噪比為20db時，系統誤碼率小於1e - 3 。
  8. Mc - cdma is a multi - carrier modulation method presented for broadband mobile communications

    Mc - cdma是為寬帶移動通信而提出的新型多載波調制技術。
  9. The principles, schemes and performances of mc - cdma are illustrated in this thesis. the model of time - varying multi - path is analyzed and realized

    本文簡要介紹了mc - cdma的基本原理、系統結構和性能，分析並實現了多徑時變通道的數學模型。
  10. Spreading codes ensure the mc - cdma a multiuser system

    擴頻碼保證系統為一個碼分多址系統。
  11. In this dissertation, ofdm which has been the hottest spot in communication field recently will be considered as my direction. the dissertation will study some key techniques in mc - cdma system, such as modulation technique, peak - average power ratio, detection technique and synchronization problem of the whole system. what ' s more, the results of calculation and simulation will be given

    本文以目前通信領域的熱點： ofdm （正交頻分復用）為研究方向，對于多載波cdma系統中的若干關鍵技術，即多載波cdma系統中的調制技術、峰平比性能、接收端檢測技術以及整個系統同步問題進行了研究，並給出相應的計算機模擬結果。
  12. Now cdma is very mature and becomes the key technique of the third - generation mobile communication systems. more and more attention is paid to the technique of multi - carrier. mc - cdma is combination of ofdm and cdma, thus advantages of both techniques are exploited

    近年來移動通信技術發展迅猛，碼分多址技術到目前已經非常成熟，並成為了第三代移動通信系統的核心，人們將眼光聚集在正交頻分復用調制技術，將多載波調制技術應用於cdma中，從而兼具多載波技術和cdma技術的優點。
  13. Proposes a novel channel estimation algorithm for multi - carrier code division multiplex access ( mc - cdma ) systems on the uplink

    摘要提出了一種新穎的適用於多載波碼分多址接入（ mc - cdma ）系統上行鏈路的通道估計演算法。
  14. Research on reducing peak - to - average power ratio of mc - cdma

    降低峰值平均功率比的研究
  15. Block least mean square adaptive combining for mc - cdma systems

    系統的塊最小均方自適應合併技術
  16. Mc - cdma is one of the key technologies in the next generation

    Mc - cdma技術是下一代移動通信的核心技術之一。
  17. The aim of this paper is to investigate the problem of pilot - assisted channel estimation in downlink mc - cdma

    本文主要研究了mc - cdma下行鏈路中的基於導頻信號的通道估計。
  18. The application of mc - cdma enables one to avoid isi and ici in the detection process, resulting in advantages of frequency diversity

    由於在給定條件下，信號的峰平比是功放體積的決定性因素。
  19. This paper deeply research on the synchronization, peak - to - average power ratio, multiuser detection of the current mc - cdma system

    本文深入研究了目前mc - cdma中同步、峰平比、多用戶檢測的問題。
  20. Synchronization acquisition technique is one of the most important techniques in any communication systems. in mc - cdma system, we exploit multi - carriers to transmit high - speed data, which is sensitive to the errors of synchronization, so synchronization is important, especially fast acquisition

    在mc - cdma系統中，利用多個載波傳輸數據，並且傳輸的是高速數據，它對系統的同步錯誤非常敏感，所以同步技術就顯得尤其重要，而且要求能夠快速捕獲。
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