modulation rate的例句大全

a novel method of extending the cck modulation rate

一种扩展CCK调制速率的新方法

An improved threshold adjustment ( ITA) algorithm is proposed, it can precisely guarantee the predefined frame error rate ( FER) for pilot-assisted adaptive modulation and coding ( AMC).

从保证自适应编码调制系统目标误帧率的角度出发，提出了一种保证实时误帧率的优化门限值算法（ITA）。

The rate equation formalism is used to develop the concepts of laser threshold, population inversion and modulation response.

比例方程式形式用来生成雷射临界点、能态数反转与调变反应的概念。

Based on analyzing the principles of three flow rate modulation projects including varying throat area, unchoked nozzle, fixed flow, the advantages and disadvantages of each project are explained.

在分析了变喉面、非壅塞喷管、固定流量等三种方案的调节原理的基础上，说明了每一种调节方案的技术关键以及它们的优缺点。

In conventional single-carrier modulation, the system complexity will increase greatly due to the multi-taps equalizer used in high data rate wireless communication.

因此在利用传统的单载波调制方式进行高速率无线通信时需使用多抽头均衡器，从而使系统的复杂度大大增加。

For high order QAM ( Quadrature Amplitude Modulation) signals, the residual square error of CMA ( Constant Modulus Algorithm) is unacceptably large and the convergence rate of MMA ( Multi Modulus Algorithm) is too slow.

对于高阶QAM信号，常数模算法的收敛误差不为零，而多模算法的收敛速度慢。

In the past, OOK was used for digital data modulation primarily, but the data transmission rate was limited because of the ISI effect.

过去可见光通信主要使用开关键控调制方式，但由于ISI的影响使数据传输速度受到了限制。

The analytic results on system CNR ( Carrier-Noise-Rate) and the computer simulation show that the system CNR can be improved greatly by utilizing the wavelength controlling and increasing the optical modulation index.

仿真结果表明，通过实施波长控制技术和增加光调制指数等措施，可以有效提高系统载噪比。

Furthermore, the expression of stationary bit error rate of system output corresponding to equiprobability quaternary pulse amplitude modulation ( PAM) input signals was deduced.

给出了当输入信号为等概率的四进制脉冲幅值调制（PAM）时，系统输出理论渐近误码率计算公式。

Relations between bit error rate and average received signal-to-noise ratio ( SNR) in AWGN channel were derived for three modulation modes defined by Bluetooth 2.0+ EDR new specification. The function expressions of packet retransmission probability and average received SNR of ACL packets were put forward.

分析了蓝牙2.0+EDR新规范定义的3种调制方式在AWGN信道下的位错误率与平均接收信噪比的关系，推导了ACL分组的重传概率与平均接收信噪比的函数表达式。

The law of welding current and welding rate modulation progress is followed with the partition of collected keyhole voltage, which is used to solve the conflict of nonlinear affection and stability of control system.

系统软件设计中，提出了对焊接电流、焊接速度的调节按照小孔电压大小分区控制的思想，有效地解决了系统中的非线性因素影响，较好地兼顾了控制系统的调节精度与工作稳定性。

A scheme which adopts low chip-rate but no extra label length is proposed in this dissertation. The OC label is phase-shift keying ( PSK) modulated on the amplitude-shift keying ( ASK) modulation payload.

本文提出了一种采用低速OC标签但不增加标签开销的相移键控光码（PSK-OC）标签和幅移键控（ASK）净荷正交调制光分组格式。

Compared with the traditional scheme of single-carrier modulation, OFDM technology has more effective anti-jamming ability and achieves higher transmission rate.

与传统的单载波调制方式相比，OFDM技术可以有效地抵抗信道多径干扰，提高系统的传输速率。

On-off keying ( OOK) is the main modulation method used in the present optical communication engineering, simple and easy to implement. But its bit error rate is so high that error correcting coding techniques are necessary.

目前无线光通信工程主要采用开关键控调制，该调制简单、易实现，但误码率高，需要引入纠错编码技术。

Simulation results show that: under the condition that the occupied bandwidth and the information rate are equal, the anti-noise performance of the communication system based on chaos M-ary modulation and demodulation method can achieve the theoretical limit of the ideal incoherent OOK receiver.

结果显示：在带宽和码元速率相同的情况下，混沌振子多进制调制解调通信系统的误码率性能能够达到传统非相干OOK接收机的理论极限。

Finally, a novel wireless navigation system based on VLC technology is proposed. A bit-error-rate testing platform based on the OOK modulation and Manchester codec is designed by using FPGA development kits. The function verification experiments of the navigation system are then completed.

最后，为了探索VLC技术的应用，提出了一种基于VLC的新型无线导览系统，并使用FPGA设计了采用OOK调制和Manchester编解码的误码率测试平台，完成了无线导览系统的功能测试等实验。

The two outstanding advantages of PPM compared with on-off keying modulation are presented: higher power efficiency and extremely lower symbol error rate.

分析了脉冲位置调制与目前的实际系统中应用最多的开关键控调制（OOK，On-Off Keying）相比最突出的两个优点：功率有效性、大大降低了误码率。

When modulation order is low, the spectrum utilization rate will be lower, but the system bit error rate will be smaller.

调制阶数越低，频谱利用率就越低，但系统误码率较小；相反调制阶数越高，在提高了频谱利用率的同时，却增大了系统的误码率。

The characteristics of cardiovascular autonomic nerve system ( ANS) modulation during exposure to three different altitudes were compared by time domain, spectral and nonlinear analysis of short-( 5 minutes) term heart rate variability ( HRV).

应用短程心率变异性（HRV）时域、频域和非线性分析法，对比进入三个不同海拔高度自主神经系统（ANS）调节功能的特点。

They also measured cardiac autonomic modulation ( CAM), the balance of the sympathetic and the parasympathetic control of the heart rate rhythm.

他们还测量了控制心率节律的交感神经与副交感神经平衡的&心率自主调节（CAM）。