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性能增益
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  performance gain
     The simulation shows that in 4 by 4 V-BLAST systems,the new scheme can achieve about 4dB performance gain over the conventional MMSE-SIC algorithm at BER=10~(-2),and it even approaches the ML performance. Furthermore,the proposed algorithm has good robustness against spatial correlation.
     仿真结果表明,在4发4收V-BLAST系统中BER=10-2处,所提出算法比传统的MMSE-SIC算法有大约4 dB的性能增益,甚至接近于ML算法的性能,而且对于空间相关也具有较强的鲁棒性.
短句来源
     Simulation results show that the great performance gain can be obtained by using TCM-OFDM system realization scheme.
     仿真结果表明 ,采用 TCM- OFDM系统实现方案 ,可以获得很大的性能增益
短句来源
     The output SNR and performance gain are functions of signal to impulsive noise ratio (SINR) respectively. Under lower and higher SINR, the output SNR changes linearly;
     消隐器输出SNR及其性能增益是信号脉冲噪声比(SINR)的函数:在低SINR和高SINR下, 输出SNR呈线性变化,性能增益分别趋近于定值;
     The results show that the proposed cascade system improves the performance gain by 2 to 6 dB compared to traditional BICM system.
     结果证明,该文级联系统取得高出一般位交织编码调制系统2—6分贝的性能增益
短句来源
     The experimental results show that the joint coding system can achieve higher performance gain than the conventional separate coding system.
     仿真结果表明 ,文中提出的联合编码系统可获得比传统的分离编码系统更高的性能增益 .
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  “性能增益”译为未确定词的双语例句
     Simulation results show that,with the same decoding computation efforts and at P b=10 -6 ,B GA achieves about 0 5 dB coding gains over M algorithm (MA) for the coding constraint length K=19 code,and 1dB gain over Viterbi algorithm (VA) with the K=7 code.
     模拟结果表明 :在相同译码复杂度下、Pb=10 -6时 ,与MA算法 (编码约束度K =19)相比 ,该译码算法约有 0 5dB性能增益 ; 与VA算法 (K =7)相比 ,B GA大约有 1dB增益 .
短句来源
     Simulation results show that over large scale fading and COST207 TU(TU: Typical Urban) channel, the proposed algorithm can obtain about 3 dB performance improvement compared with the distributed MIMO-OFDM STBC (Space-Time Block code) system without power allocation in cases of BPSK modulation, when the BER is 10-2.
     仿真结果表明,在考虑大尺度衰落的COST207 TU信道下,在BPSK调制以及误码率为时,采用功率分配的分布式MIMO-OFDM系统与无功率分配的STBC分布式MIMO-OFDM系统相比,能够获得 3dB左右的性能增益
     In chapter 2,based on DP-Trie data structure and formulas[20],relative MPLS perfor-mance compared to IP is quantitatively analyzed, using classical queueing theory.
     在第 2 章中,基于 DP-Trie 数据结构和计算公式[20],采用经典排队论方法对骨干网络中 MPLS 相对于 IP 的性能增益进行了定量分析。
短句来源
     Compared with separate decoding systems, the gain in signal to noise ratio is about 0 5-1.0 dB with a limited added complexity.
     与分离的信源、信道译码相比 ,性能增益约为 0 5~ 1.0dB ,增加的复杂性很小 .
短句来源
     Simulation results show that about a 1 to 1.5 dB gain in terms of SNR (signal to noise ratio) can be achieved over frequency-selective fading channels compared to conventional LDPC coded OFDM systems without ordering, and the proposed scheme is robust to CSI quantization.
     分析和仿真结果表明,相对于传统的无排序LDPC码编码OFDM系统,所提出的基于自适应排序LDPC码的OFDM系统可以获得1 ~1.5dB的性能增益,并且对CSI的量化具有鲁棒性.
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  相似匹配句对
     A high-performance Unity-Gain Amplifier
     一种高性能单位增益放大器
短句来源
     DESIGN AND ESTIMATION OF PERFORMANCE GAIN FOR A COMBINED EXTENDED NOZZLE
     组合式延伸喷管设计及性能增益估算
短句来源
     Plant Performance
     设备性能
短句来源
     application forecast;
     性能预测;
短句来源
     Increase the benefit: 100;
     增益:100;
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  performance gain
Computer simulations show that the turbo iterative receiver structure with chip equalization offers significant performance gain over the traditional receiver structure.
      
The corresponding iterative decoding algorithm without channel estimation is finally provided to offer significant performance gain.
      
The experiment results show that the improved algorithm can lead to significant performance gain in various applications.
      
Consequently, it provides significant performance gain in terms of smaller symbol error over the MMSE approach.
      
Simulation results show that our approach can offer potential performance gain over the conventional COVQ approach.
      
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This paper described the design method of an extended nozzle

述及带有气体展开裙的双节套筒式延伸喷管的设计方法,并对其性能增益进行估算,结果表明该喷管具有很大的实用价值。

In recent years,increasing attention is paid to reduce computation of Viterbi Algorithm and complexity of decoder [1-3]. In this paper a new simplified Viterbi decoding is presented. The authors take two effective measures: reduction of states of decoder and computation of multi-branch in one step. These two measures bring the following benefits: (1)reduction of computation of Viterbi Algorithm by more than 50%; (2)reduction of hardware in the case of parallel decoder; (3)increase of decoding speed by more than...

In recent years,increasing attention is paid to reduce computation of Viterbi Algorithm and complexity of decoder [1-3]. In this paper a new simplified Viterbi decoding is presented. The authors take two effective measures: reduction of states of decoder and computation of multi-branch in one step. These two measures bring the following benefits: (1)reduction of computation of Viterbi Algorithm by more than 50%; (2)reduction of hardware in the case of parallel decoder; (3)increase of decoding speed by more than 100% in the case of series decoder. In the following two paragraphs,the authors' contributions will be stated and then concisely explained. The authors' method is believed to be better than that of Ichitani [1] and Li [2] in that it is more suitable for soft decision. The method of Ichitani and Li employ syndrome to discern errors and are thus not easily applied to soft decision. The authors' method is believed to be better than that of Li [2] in that its computation is fixed, but that of Li's method is not fixed. So the authors' method is easy to implement on hardware and it can effectively increase decoding speed. The authors has developed a series decoder with microcomputer. Its bit-error probability is the same as Viterbi decoder, but its decoding speed is higher than that of Viterbi decoder.

本文提出一种新的简化Viterbi译码方法,并讨论了新方法的误码性能和译码运算量,这种方法在不牺牲太多性能增益的条件下,平均译码运算量只是经典Viterbi译码的一半,用软件或串行ACS电路实现译码器,可提高一倍多的译码速率。

The double V type flame stabilizer is an advanced low drag stabilizer constructed with a big V type stabilizer overlapping to a small V type one. Since intake air passes through the nose gap between the two circular parts, better ignition perfermance, lower the stream flow drag loss, improved the afterburning efficiency, lower skin temprature, and leaner blowout boundary will be achieved. By this type of flame stabilizer, the turbojet engine afterburn system will get general perfermance improved, and also the...

The double V type flame stabilizer is an advanced low drag stabilizer constructed with a big V type stabilizer overlapping to a small V type one. Since intake air passes through the nose gap between the two circular parts, better ignition perfermance, lower the stream flow drag loss, improved the afterburning efficiency, lower skin temprature, and leaner blowout boundary will be achieved. By this type of flame stabilizer, the turbojet engine afterburn system will get general perfermance improved, and also the reliability in flight increased. For this flame stabilizer more than 40 stand rig tests 10 tests in aircraft and 8 tests in flight have been conducted. Besides, size modification and manufacturing processing have also been carried out. This flame stabilizer was employed in using turbojet engine with a small batch in 1986-1987. It is proved that the double V type flame stabilizer has satisfactory perfermance and reliable construction.

双V型火焰稳定器是一种结构新颖的低阻火焰稳定器,具有点火性能好,流动损失小,燃烧效率高等优点,其应用改善了发动机的总体性能,提高了发动机空中接通加力的可靠性。叙述了双V型火焰稳定器的工作机理,性能增益,研制和应用情况。

 
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