When used for multiplexing, it is a coding and modulation scheme.
当用于复用时,可以作为一种特殊的编码调制方法。
Each pilot sub- carrier signal is modulated with a predetermined pilot modulation scheme.
用预定的导频调制机制来调制每个导频子载波信号。
CSK is proposed as a new modulation scheme, in which BCP is employed as spreading sequences.
互补序列键控(CSK)作为一种新的调制方式,采用二进制互补对(BCP)作为扩频序列。
This thesis is concerned with the study of designing multi-modulation scheme software radio receiver.
本文对多制式软件无线电接收机的设计进行了研究。
Finally, this dissertation proposes a low complexity adaptive modulation scheme for VBLAST-OFDM system.
最后,提出了一种低复杂度的VBLAST - OFDM系统自适应调制方案。
In this paper, a new modulation scheme which combines the grid coding with the CCK modulation is proposed.
文中一个新的调制方案是把网格编码和CCK调制结合起来提出来的。
The mainly work is described as follows:1, A joint source-channel coding and modulation scheme is presented.
主要获得以下几方面的成果:1、提出了一种信源-信道联合编码调制的方案。
Single-modulation scheme software radio receiver is designed by studying software design and hardware design.
通过对硬件设计和软件设计两个方面的研究,设计了单制式软件无线电接收机。
The adaptive power allocation algorithm and modulation scheme for adaptive OFDM systems are studied subsequently.
其次研究了自适应OFDM系统的功率分配及自适应调制算法。
The paper presents the effectiveness of EMI suppression of switching converters with a chaotic frequency modulation scheme (CFMS).
探讨了混沌频率调制技术在开关变换器中抑制电磁干扰的实际效果。
In wireless technology, collision occurs when two transmitters transmit at the same time with the same modulation scheme on the same frequency.
在无线技术中,冲突发生在两个发射器在相同的时间、相同的频率发送相同的调制方式。
Both functions of intracavity loss modulation and selection of laser output wavelength are simultaneously provided by this Q-modulation scheme.
此调q方案同时提供了腔内损耗调制和对激光输出波长选择的功能。
The paper presents a square wave modulation scheme based on TDMA signal system to resolve the problem. Also it can avoid the high speed system clock.
该文提出了一种基于TDMA信号体制下的方波调制方案,该方案既解决了远近效应,又避免了在较高的中频上采用过高的系统时钟。
Two mathematic models of software radio receiver are introduced and they provide theoretic basis for designing multi-modulation scheme software radio receiver.
首先介绍了两种软件无线接收机的数学模型,为多制式软件无线电接收机的设计提供了理论依据。
Pulse position amplitude modulation (PPAM) is a new modulation scheme that combines pulse position modulation (PPM) and pulse amplitude modulation (PAM) together.
脉冲位置幅度调制(PPAM)是一种将脉冲位置调制(PPM)和脉冲幅度调制(PAM)结合到一起的新型调制方式。
Because high-speed data take up wide bandwidth, looking for one which have high efficiency modulation scheme and suitable for frequency hopping communication system is needed.
由于高速数据占用更宽的带宽,所以在调制制式上应该寻找一种适合于跳频通信特点的具有高频谱效率的调制方案。
Upon receipt of wireless data, transceiver 30 May perform various processing including, for example, frequency conversion and modulation according to a desired modulation scheme.
在接收无线数据之后,收发信机30可以进行各种处理,例如包括频率转换以及按照需要的调制方案进行调制。
A single carrier modulation scheme suitable for use in high frequency communication systems is provided that achieves improved residual frequency error and phase noise estimation.
提供了一种实现改进残留频率误差和相位噪声估算的、适合于在高频通信系统中使用的单载波调制方案。
Firstly, this thesis analyzes the transmission characteristics of HF channel, and fixes on the system modulation scheme 2dpsk, according to the comparison of ASK, FSK and PSK (DPSK).
首先,本文分析了短波信道的传输特性,并通过比较A SK、FSK和PS K (DPSK)几种调制方式的特点,确定了2dpsk为系统的调制方案。
This paper investigates the soft decision of de-mapping technique in COFDM de-modulation scheme. It proposes a new method suitable for the scheme for extracting CSI from communication channel.
深入研究了数字电视地面广播COFDM解调方案中的解映射软判决技术,提出了适用于该系统的信道状态信息CSI提取方法。
In the scheme, a set of feature parameters are extracted from signal spectrum and constellation based on the differences between digital mixed signals and common digital modulation signals.
该方案利用数字混合信号与常用数字调制信号在信号频谱以及星座点的差异提取特征参数进行自动识别。
A novel topologic structure of high frequency AC pulse density modulation converter is proposed, and its operation principle, control scheme and design are described in detail.
提出了一种新颖的高频交流脉冲密度调制变频器的拓扑结构,并详细阐述了工作原理、控制方案和设计方法。
Statistics histogram data processing scheme is designed. Standard deviation of frequency modulation is found out according to normal distribution characteristics.
设计了统计直方图数据处理方案,按照正态分布的特性找出了寄生频率调制的标准偏差。
The simulation results show that the proposed algorithm improved the throughput more obvious than any single modulation and coding scheme whether under high or low SNR conditions.
仿真结果表明:无论在高信噪比还是在低信噪比条件下,自适应算法均比单一的编码调制方案吞吐量有明显的提升。
This scheme exhibits a good PAPR reduction performance, and for signals of high level modulation, such as 16qam and 64qam, it approaches the best performance of all SLM schemes.
结果表明该方案在抑制峰均比方面呈现出很好的性能,对于高阶调制信号,如16QAM和64qam,它甚至达到选择性映射所能实现的最佳性能。
A bit interleaved coded modulation (BICM) scheme was introduced, with iterative decoding using soft decision feedback.
论述一种基于软判决反馈迭代译码的比特交织编码调制方案。
To increase the bandwidth efficiency, such a system scheme use the MSK modulation method combining with a premodulation filter.
文中讨论了以MSK调制技术结合预调滤波器提高带宽效率的系统构建方案。
To increase the bandwidth efficiency, such a system scheme use the MSK modulation method combining with a premodulation filter.
文中讨论了以MSK调制技术结合预调滤波器提高带宽效率的系统构建方案。
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