1、

Weaver modulation and IWA demodulation are selected to realize the SSB module, so that the carrier phase deviation can be avoided. With the adoption of multi-item filtering structure and multi-level technology in the sample rate conversion, the amount of computing and storage requirements is greatly reduced.

单边带调制解调模块采用weaver调制与IWA解调,避免了载波相位偏差的影响;采样率转换采用多相结构和多级技术,大大降低了DSP的运算量和存储要求。

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2、

due to that hspa+ has already adopt mimo and high order modulation technology to improve the spectral efficiency, it is preferred to further improve the peak data rate by increasing the system bandwidth.

由于HSPA+已经采用了MIMO和高阶调制等先进技术以提高频谱效率,所以提升系统带宽成为提高峰值数据速率自然而然的首选方案。

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3、

the energy radiation rate decreases with a decrease in the modulation period.

能量辐射率随调制周期中的下降。

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4、

to resolve the difficulty of fair packet scheduling caused by bandwidth uneven distribution with time slot ( budts) in adaptive modulation wireless system, a novel fair packet scheduling algorithm, maximum rate scheduling with fairness constraint ( mrsfc), was proposed.

针对自适应传输系统中带宽随时隙不均匀分布(BUDTS)造成无线分组调度算法难以保证公平性的问题,提出了一种公平约束最大速率调度(MRSFC)算法。

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5、

the design of the constant value unit accords to the negative feedback control theory, including power and temperature. because the method of the temperature-wavelength modulation slowly, this paper uses the pi isolated circuit to speed up the rate of the temperature modulation effectively.

恒值单元根据负反馈控制原理,分别设计出功率和温度负反馈稳定电路,并针对温度-波长调制速度慢的缺点,引入了比例积分分离电路,有效加快了温度调制速率。

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6、

Proposes a variable rate modulation scheme for wideband data transmission on the Rayleigh fading channelspectral efficiency.

探讨了宽带移动通信传播环境中,瑞利衰落信道对固定速率调制的影响,并研究了变速率调制在宽带瑞利衰落信道中的可行性.

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7、

Trellis-Coded Modulation ( TCM) is an advanced combined coding and modulation technique evolved in recent years. In TCM, significant coding gains can be obtained without bandwidth expansion or reduction of transmission rate.

网格编码调制(TCM)是近年来提出的一种先进的组合编码调制技术,在不降低信息传输率、不扩展占用频带的前提下,它能获得可观的编码增益。

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8、
9、

In this chapter, an algorithm of iterative estimating jamming state information is proposed specially for OFDM systems based on linear modulation so as to gradually improve the correct rate of estimating JSI with the iterative estimation and then improve the performance of the whole system.

本章还专门针对基于线性调制的OFDM系统提出了一种迭代估计干扰状态信息的算法。通过迭代估计干扰状态信息,其准确性逐渐提高,从而也提高了整个系统的抗干扰性能。

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10、

This paper investigates the matter of adaptive modulation applied on MIMO systems in time-varying channels and proposes a low complexity rate quantization scheme which is called ERQ ( Enhanced Rate Quantization).

探讨了时变信道里MIMO系统的自适应编码调制问题并且提出一个低复杂率量化方案,被称为增强型码率量化方案,也叫ERQ。

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11、

An underwater heart rate telemetry system with ultrasonic modulation is described.

本文介绍了一种用超声进行调制的水下心率遥测系统,可获得80m深度水下作业潜水员的心率。

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12、

The results show that wavelength conversion based on cross-phase modulation of DSF is simple, efficient and universal with wide conversion ranges and high rate.

结果表明基于色散位移光纤中交叉相位调制效应的波长转换具有宽的波长转换范围和快的转换速度,是一种简单、高效和通用的波长转换技术。

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