coding gain 中文意思是什麼

coding gain 解釋
編碼增益
  • coding : n. 編碼；譯成電碼。
  • gain : vt 1 獲得；博得，掙得；贏得，打勝（戰爭、官司）。2 吸引；爭取…（到一邊），說服。3 （尤指通過努力...
  1. The numerical simulation equations of the border curves in term of and as well as the matching rules and the frequency dependence of microwave electromagnetic parameters of a broad - band homogeneous absorbing coating with a finite value of reflection loss are available. these results pointed out the direction to develop rams ". according to the radar - absorbing model, the optimized design of rams with thin - layer, light - weight, broadband and strong - absorbing is available by the simple genetic algorithms, which can effectively conduct the research work of rams to the detail. small but completely, the electromagnetic parameter ' s databases of rams that based on actual microwave absorbers have been set up, the object function has been constructed which conform to the involved goals, the adaptive coding measure is taken which extends the coding length dynamically adapting to the condition of the number of actual absorbers or the precision of thickness and absorber - volume - percentage, the decoding technique is initiated which satisfies light - weight and strong - absorbing as well as thin - layer and broadband by adopting of tracing variable restricting conditions dynamically to control total thickness. when decoding, the variable restricting conditions of thickness are dynamically traced, so gain the radar absorbing coatings of light - weight multiple - layer single - ingredient. similary, of thickness and absorber - volume - percentage, of light - weight multiple - layer multiple - ingredient. also, the rams ' demand to radar - absorb performance as frequency is met making use of the penalty function

    作為遺傳演算法的具體實施：根據本實驗室近來研製的吸波材料，建立了吸波材料的相關數據庫；構造了能真實體現「薄、輕、寬、強」優化目標的目標函數；根據材料的實際數量以及塗層厚度精度要求、吸收劑體積分數精度要求，建立了能動態擴展相應碼長的自適應編碼方法；首創了通過動態跟蹤變量的約束條件來控制塗層總厚度的解碼技術，以此實現了在不弱化寬頻、高強的吸波性能目標的同時，兼顧到薄層、輕質的使用性能要求；在解碼時通過動態跟蹤厚度變量的約束條件，實現了多層單組分吸波塗層對重量輕的要求；通過動態跟蹤厚度變量的約束條件和吸收劑體積分數的約束條件，實現了多層多組分吸波塗層對重量輕的要求；使用權重系數變化法，實現了吸波塗層的分頻段吸波性能要求。
  2. An improved viterbi algorithm of dsp generat ion is brought up to, and a new coding gain testing system is designed. the system tests the coding gain of the error - control system, and the coding gain is 9. 4db which exceeds the proposed index. at last, some suggestions are presented for the work in the future

    在對維特比譯碼演算法研究的基礎上，提出了維特比譯碼演算法基於dsp的改進方法，並且設計出一種新的編碼增益測試系統，對卷積編碼和維特比譯碼組成的差錯控制系統的編碼增益進行了測量，測試結果為9 . 4db ，優于設計指標，最後提出了一些對將來工作的建議。
  3. Simulation result shows that four errors can be corrected at most. this algorithm can improve error - correction ability and coding gain

    最好的情況可以糾四個錯誤，將原有糾錯能力提高了一倍，編碼增益也獲得相應的增加。
  4. Soft - decision decoding can make full use of the output information, and substantial coding gain can be gotten, which has been observed early

    因為軟判決可以充分利用輸出波形信息，提高系統的編碼增益，所以越來越受到人們的重視。
  5. A sheme of two code - rates tcm - qam with high coding gain is presented, its signals space is mapping for 90 rotationally invariant codes ( ric )

    摘要提出了一種適用於慢變通道的雙碼率tcm - qam系統方案，該方案有較高的編碼增益，同時滿足90旋轉不變要求。
  6. If a retransmission is needed, additional redundant bits for error correcting are sent. concatenation of an inner code and an outer code may provide a high coding gain and the capacity of a long code to correct errors

    級聯碼是將兩個或多個單碼級聯，在不增加譯碼復雜度的情況下，可以得到高的編碼增益，達到與長碼相同的糾錯能力。
  7. Enhanced gain filtering of g. 728 speech coding algorithm

    728語音編碼演算法的增益濾波
  8. In detail, they are bit - interleaved coded modulation ( with iterative decoding ), low - density parity - check codes and stf technology. by the performance analysis of bicm ( - id ), which can make code and modulation optimal separately, and achieve maximum possible coding diversity as well as modulation gain, guidelines for its design and an easy algorithm for siso are proposed. design of capacity - approaching of ldpc codes and efficient encoding of them as well as several kinds of its decoding algorithms are investigated

    具體的講，就是討論了基於比特交織的編碼調制技術，並給出了映射方式的設計準則以及核心模塊siso的一種簡單的f - map演算法；研究了編碼最小漢明距隨碼長線性增加的ldpc碼的幾個方面的問題，包括接近香農限碼子集的度分佈對的設計、有效編碼器的實現和各種譯碼演算法的優缺點，並對基於ldpc碼的bicm應用於ofdm傳輸系統中的性能進行了模擬。
  9. With the flying development of voica synthesis technique, desiging voice synthesis device at low price is in the face, therefore we devise voice respinsive system which uses coice synthesis processor as core chip in this paper and can turn numeric information into voice export using linear forecast coding technique, and we gain satisfying effect

    隨著語音合成技術的飛速發展，設計低價格的語音合成裝置已迫在眉睫，因此本文設計了以語音合成處理器為核心晶元的語音應答系統，我們利用線性預測編碼技術把數字信息變成語音輸出，獲得了滿意的效果。
  10. For overcoming this disadvantage and keeping its advantage of short coding time, we improve the algorithm on the two aspects of structure parallelism and codebook order structure, to gain a better coding algorithm, which meets the requirement of reconstructed image and vlsi implementation

    為了彌補這個缺陷，在保持該演算法編碼速度快這個優點的基礎上，從結構并行性和碼書排序結構兩方面對其改進，得到一種既提高了恢復圖像質量，又適合vlsi硬體實西安理工大學碩士學位論文現的編碼演算法。
  11. But, to gain the high quality and low baud rate, g723. 1 pays out the costs, such as the high complex of coding arithmetic, high delay and large store space. each of them brings up the difficulties of its real - time implementation

    G . 723 . 1的高質量和低碼率是以其高復雜度的編碼演算法、較高的延遲以及較大的存儲空間換得的，這也大大增加了它的實時實現難度。
  12. This novel transmit diversity technique, which combines channel coding, modulation and signal processing at receive terminal, can make full use of the fading multi - path in the wireless communication systems so as to mitigate the signal attenuation. this technique is mainly designed to combat channel fading in downlink transmission by combining the technique of channel coding and that of array diversity, hence increasing the capacity of wireless communications systems and giving diversity gain and coding gain to them

    基於多輸入輸出（ mimo ）的空時編碼技術是實現未來帶寬資源日益緊張的高速無線數據通信系統的重要技術，它結合了通道編碼、調制和接收端的信號處理，能夠充分利用無線通信通道中多散射體環境所造成的多徑，從而提供信號的抗衰落性能。
  13. The error - control system can increase the transmission reliability of communication system, and reduce the emission power and the capacity of the communication apparatus, so it is extensively applied in digital transmission system, for example, satellite communication system, mobile communication system, data storage and so on. coding gain is an important index for the error control system

    差錯控制系統對于提高通信系統的傳輸可靠性，降低通信設備的發射功率和減小體積具有重要意義，因此廣泛應用於數傳系統，如衛星通信系統、移動通信系統、數據存儲等方面，而對於一個差錯控制系統的衡量指標就是編碼增益。
  14. Because using ofdm, a frequency - selective fading channel can be transformed into multiple frequency - flat fading sub - channels, in the coding process, spatial diversity ( due to multiple antennas ) is integrated with frequency diversity ( due to delay spread ), therefore, the proposed code can provide higher diversity gain than space - time code alone

    該編碼利用正交頻分復用把頻率選擇性衰落通道變換成平衰落通道的特性，同時引入了基於多天線的空間分集和基於時延擴展的頻率分集，比空時編碼具有更高的分集增益。
  15. Stfs is a good coding arithmetic which is simple and easy to realize. moreimportantly stfs has higher diversity order and encoding gain than sts at the samesymbol rate. it can repel channel fading, improve data rate and wireless systemcapacity availability, stand against frequency selectivity fading, eliminate theintersymbol interference

    該編碼演算法不僅在方法和原理上簡單，而且易於實現，在相同符號率下比空時擴頻具有更大的分集度和更高的編碼增益，能有效抵抗通道衰落、提高數據速率、提高無線系統容量、很好的對抗頻率選擇性衰落和消除符間干擾。
  16. On theory, the paper analyzed the coding gain of the channel coding. the character of our radio is the flexibility, standardization and modularization by application of software radio theory

    本項目主要的特點在於軟體無線電理論的應用所帶來的系統的靈活性，並使電臺具有模塊化、標準化和通用化的特點。
  17. Coded modulation technique is a way that combines coding technique with modulation technique to get coding gain in the instance of keeping the power efficiency and frequency efficiency but increasing the complexity of equipment

    解決這一問題的一種有效方法是利用交織技術與編碼調制相結合，以此獲得在衰落通道下性能的提高。
  18. So if we gain the relation between the the derivative of ggd distortion - rate function and the ggd shape parameter, then we can reconstruct the rate - distortion function. the bitplane - based fgs of mpeg - 4 has been accepted as a standard coding tool for video streaming applications

    這樣，實際中只需研究特定編碼量化模式下ggd失真速率函數的導數與ggd形狀參數的關系和規律，就可以重建相應編碼模式下的失真速率函數。
  19. It is an important method of error control coding technology to solve the problem of transmission dependability. viterbi decoding algorithm is a kind of maximum likelihood decoding. because it can gain higher decoding speed and have the fixed decoding interval, viterbi decoding is applied so widely

    差錯控制編碼技術是解決傳輸可靠性的一種重要手段，維特比（ viterbi ）譯碼演算法是一種最大似然譯碼，它可以得到較高的譯碼速度以及譯碼計算時間固定，因而在通信系統中得到廣泛應用。
  20. Low density parity check ( ldpc ) codes are shown to be one class of shannon limit approaching codes. with advantages of high encoding gain, low decoding complexity and flexible code rates, etc., the research of these codes has become a hot spot of coding academia

    低密度校驗碼（ ldpc ）性能接近香農限，具有編碼增益高、譯碼簡單快捷、碼率靈活等優點，是當前編碼界的研究熱點。
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