harq 中文意思是什麼

harq 解釋
混合重傳
  1. Secondly, a nonbinary type - ii harq based on invertible rs codes is proposed

    其次，提出了基於可逆碼的第二類多進制harq 。
  2. According to the location where error - detection is performed, two structures are proposed. one is syndrome - ahead harq, and the other is syndrome - behind harq

    根據檢錯部分在譯碼器中所處的位置，分別提出了前向校正子和後向校正子結構。
  3. Firstly, a syndrome - based type - i nonbinary hybrid arq ( harq ) is proposed, which makes full use of the powerful error - detection and - correction capacity of reed - solomon ( rs ) codes, and can be combined with the existing rs decoder easily

    首先，提出了基於校正子（ syndrome ）的第一類多進制harq ，它充分利用了reed - solonmon （ rs ）碼強大的糾錯和檢錯功能，並可直接結合到已有的rs譯碼器中。
  4. The analysis of physical layer performance is mainly about harq and amc. first discuss the implemention of physical layer. then in front to simulation results, we can find their advantages in cell throughput and ber or fer

    本文的物理層性能分析圍繞harq和amc技術展開，在分析物理層實現方案后給出模擬結果，分析harq和amc技術分別對系統吞吐量的貢獻，以及對誤碼率和誤幀率的優化，發現他們的優勢。
  5. Harq belongs to the link adaptive technology, which is the core to realize the hsdpa proposed by 3gpp

    該技術屬于鏈路適應技術，它是實現3gpp建議的快速數據分組接入（即hsdpa ）的核心技術。
  6. Throughputs of adaptive modu - lation, adaptive coding, and joint adaptation schemes are analyzed, and optimal switch - ing threshold of snr is obtained. in comparison with non - adaptive harq, adaptive schemes can get much higher throughput in the given cell. among the three adaptive schemes, adaptive modulation is t

    分析了自適應調制、自適應編碼和聯合自適應方案在小區中的流量特性，得到了最優的切換門限，比較了自適應與非自適應harq的流量，以及三種自適應方案的優劣，其中自適應harq流量特性明顯好於非自適應harq 。
  7. Finally, adaptive scheme using nonbinary type - ii harq is proposed to improve the throughput in a cell

    最後，為進一步提高系統的流量，提出了自適應harq 。
  8. Throughput, reliability, and average delay have been analyzed, and compared with those of a binary type - ii harq and a turbo - tcm type - ii harq. nonbinary harq outperforms its binary counterpart in terms of throughput, reliability and average delay

    分析了該harq的流量、可靠性和平均時延，並與採用二進制可逆碼的第二類harq和採用turbo - tcm的第二類harq進行了比較。
  9. Although turbo - tcm can provide more throughput than nonbinary harq at low snrs, the complexity is too high. moreover, it encounters very serious throughput floor in a wide range of snr, while nonbinary can obtain satisfactory throughput and surpass the turbo - tcm harq scheme in this range

    結果表明，多進制harq在流量、可靠性和平均時延諸方面均比二進制有了顯著提高，並較好的彌補了高復雜度的turbo - tcm方案的流量平臺區。
  10. In order to improve the transmission reliability of data and image in 3g, the channel coding technology - harq combined by arq and fec is often adapted widely

    為了提高第三代移動通信中數據和圖像的傳輸可靠性，常採用arq和fec相結合的harq通道編碼技術。
  11. This paper provides the coding schemes of harq and the protocols of limited times packet retransmission. especially, the analysis of performance and the mechanism of operation of the n - channel stop - and - wait protocol are given in detail

    本文針對hsdpa的目標，圍繞harq技術進行研究，給出了harq的編碼方案以及有限次的分組重傳協議，並對其中的n通道停等協議saw作了詳細的性能分析及操作原理說明。
  12. If no errors occur in it, the parity check part itself can retrieve the information by invertible process. if errors occur, the parity check part will be combined with the previously received information part to build an error - correction code, and try to recover the information. this kind of harq can match channel states very well

    該harq將信息碼字和校驗碼字分開傳送，通道狀態較好時只傳送信息碼字；通道變差時才要傳送校驗碼字，校驗碼字可單獨或與信息碼字一起將信息恢復出來，因此這種結構對通道有較好的適應性。
  13. Much reference of the algorithms and models can be got from the performance results for the practical design and layout. system - level simulation of hsupa builds the integrated platform and key models to describe and simulate the common structure and features of the radio network, including cell layout, path gain, traffic model, power control, handover, etc., also the special ones of hsupa, including mac - es / e, node b controlled scheduling, harq, shorter tti, etc.

    所謂hsupa系統級模擬就是要搭建系統級的模擬平臺，對無線網路的公共結構和特性（例如小區布局，傳播模型，衰落通道，天線模型，功率控制，切換， ue的分佈和移動，業務的建立終止和中斷等）和hsupa的專有結構和特性（ mac - es / e ， nodeb控制的調度， harq ，更短的tti ）進行描述和建模。
  14. The computer simulations show that the harq with the new combining decoding algorithm is obviously superior to the harq without the combining algorithm and also a rather advantage over the harq with traditional chase combining decoding algorithm in terms of the number of retransmissions and the throughput of system

    通過計算機模擬模擬，結果表明採用了新演算法的harq在改善系統吞吐量和有效減少重傳次數方面明顯優于採用無組合譯碼演算法的harq ，而且也略優于採用傳統chase譯碼演算法的harq 。
  15. Harq, amc and multi - code in hsdpa have replaced the osvf and power control technology in release99 protocol. in a short time, the ues who are near to nodeb can be allowed to transfer more data with some higher modulation method. it increases the throughput of certain ues, as well as the throughput of a cell

    Hsdpa採用harq 、 amc 、多碼傳輸等技術替代release99中物理通道使用的變擴頻因子（ osvf ）和功率控制技術，使靠近nodeb的用戶在短期內可以得到更多傳輸數據量和更高階的編碼調制組合，提高用戶吞吐量，使系統從短期的變化中受益。
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