Description: 本文介绍了QAM调制、解调和判决原理，讨论了QAM的误码率性能，并在SystemView下对QAM调制、解调系统进行了仿真，观察并分析了原始输入信号、调制信号、解调信号、星座图以及QAM信号的功率谱图。-QAM modulation, demodulation and sentencing principle, the QAM BER performance, and right under the SystemView QAM modulation, demodulation system for simulation, observation and analysis of the original input signal, signal modulation, demodulation signal constellation map and QAM signals in the power spectrum. Platform: |
Size: 125075 |
Author:刘涛 |
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Description: 本文介绍了QAM调制、解调和判决原理，讨论了QAM的误码率性能，并在SystemView下对QAM调制、解调系统进行了仿真，观察并分析了原始输入信号、调制信号、解调信号、星座图以及QAM信号的功率谱图。-QAM modulation, demodulation and sentencing principle, the QAM BER performance, and right under the SystemView QAM modulation, demodulation system for simulation, observation and analysis of the original input signal, signal modulation, demodulation signal constellation map and QAM signals in the power spectrum. Platform: |
Size: 124928 |
Author: |
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Description: 详细讲解了AWGN信道下16QAM编解码的设计及误码率性能分析-gave a detailed account of the AWGN channel codecs 16QAM the design and analysis of BER performance Platform: |
Size: 58368 |
Author:谢宾 |
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Description: 4QAM下FMT系统误码率性能分析，包含原型滤波器、多相滤波器等代码。——analysis of BER performance of FMT system with 4QAM,including ProtoFilter and polyphase filter-FMT system under 4QAM BER performance analysis, including the prototype filters, polyphase filters, such as code.- Analysis of BER performance of FMT system with 4QAM, including ProtoFilter and polyphase filter Platform: |
Size: 3072 |
Author:姚爱全 |
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Description: 对M=64的QAM系统进行蒙特卡罗仿真，并分析起性能和误码率-M = 64 of the QAM system for Monte Carlo simulation, and analysis of starting performance and bit error rate Platform: |
Size: 2048 |
Author:wuyinkui |
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Description: 摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向，交频分复用
OFDM)是一种无线环境下的高速传输技术，它对高速列车控制信息传输中卞要受到的由于多
径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和
基本原理，然后在计算机上用M atlal〕对其性能进行了仿真，仿真中将OFDM与传统的单载波
调制方式—i1，交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较，最后分析了一者的仿真结果.
-Abstract: Based on the communication technology train operation control system (CBTC) is a railway signal direction for the development of cross-frequency division multiplexing OFDM) is a wireless environment of high-speed transmission technology, its high-speed train control information transmission Bian be subject to the Due to the spread of multi-path fast fading caused by the impact of a strong resistance to diseases. This paper first introduces the OFDM technology development and the basic principles, and then on the computer〕 M atlal use its performance simulation will OFDM with the traditional single-carrier modulation-i1, cross-amplitude modulation (1frQAM) against multi-path interference of the 10 properties were compared with a final analysis of the simulation results. Platform: |
Size: 36864 |
Author:ma ming |
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Description: 本文对16QAM解调软信息输出(LLR)理论计算方法进行分析，推导
出其简化解调算法。将两者在性能和计算复杂度方面进行了分析比较，并分别在
高斯白噪声信道和瑞利衰落信道环境下进行仿真-In this paper, 16QAM demodulator soft information output (LLR) theoretical calculation method for the analysis derived simplified demodulation algorithm. Both in performance and computational complexity aspects are analyzed and compared, and in white Gaussian noise channel and Rayleigh fading channel simulation environment Platform: |
Size: 195584 |
Author:xzn |
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Description: 利用SIMULINK 来实现16QAM的仿真，并分析QAM的系统性能。-16QAM using SIMULINK to realize the simulation, and analysis of system performance QAM. Platform: |
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Author:洪依 |
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Description: 摘 要:本文分析了在限幅噪声和高斯噪声环境下,在HFC 网中混合传输AM/ OFDM信号时的误
码特性,并与单载波AM/ QAM系统进行比较,结果表明OFDM系统由于多个子通道的稀释作用,其
抗限幅噪声性能比单载波系统好。
关键词:正交频分复用 HFC 网 限幅噪声 误码率-Abstract :Theoretical analysis is presented for the BER performance of hybrid AM/ OFDM system in the pres2
ence of clipping impulse and Gaussian noise ,and the OFDMBER has been compared with that of the single2car2
rier AM/ QAM system1It is found that ,due to the dilution effect of the subchannels ,OFDM is better than single2
carrier QAM in terms of the ability to resist chipping impulse noise interference1
Key words :OFDM HFC network clipping noise BER Platform: |
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Author:king |
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Description: 采用16QAM调制方式对一串二进制信息进行基带调制，并分析其功率谱，在AWGN信道上进行传输，并解调，最后对其误比特（BER）性能加以分析。-Using 16QAM modulation methods on a string of binary information in the baseband modulation, and analyze the power spectrum, in the AWGN channel for transmission, and demodulation, the last of its bit error (BER) performance analysis. Platform: |
Size: 2048 |
Author:julia |
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Description: 基于已知特性信道的QAM系统的仿真和性能分析-Based on the known characteristics of the QAM channel system simulation and performance analysis Platform: |
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Author:沈岗 |
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Description: tA scheme of format conversion optical 16-ary quadrature amplitude modulation (16QAM) toquadrature phase shift keying (QPSK) signal based on cascaded four-wave mixing (FWM) in semiconduc-tor optical amplifiers (SOAs) is proposed. Theoretical analysis and simulations of the format conversionscheme are conducted to validate the feasibility of the proposal. In this proposal, the phase conjugatedof 16QAM signal is generated after the first FWM process in an SOA, and then the QPSK signal is con-verted due to the second non-degenerate FWM (ND-FWM) process in another SOA. The performance andthe optimal design of the 10 Gbit/s format conversion system under various key parameters of SOAs are uated and discussed. Simulation results present useful to enable interconnection between backbonenetwork and access network.-tA scheme of format conversion optical 16-ary quadrature amplitude modulation (16QAM) toquadrature phase shift keying (QPSK) signal based on cascaded four-wave mixing (FWM) in semiconduc-tor optical amplifiers (SOAs) is proposed. Theoretical analysis and simulations of the format conversionscheme are conducted to validate the feasibility of the proposal. In this proposal, the phase conjugatedof 16QAM signal is generated after the first FWM process in an SOA, and then the QPSK signal is con-verted due to the second non-degenerate FWM (ND-FWM) process in another SOA. The performance andthe optimal design of the 10 Gbit/s format conversion system under various key parameters of SOAs are uated and discussed. Simulation results present useful to enable interconnection between backbonenetwork and access network. Platform: |
Size: 1298432 |
Author:yangs |
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Description: 本书英文名为“Digital Communication over Fading Channels ：A Unified Approach to Performance Analysis”第一版，主要介绍了各种信道下系统的误码性能，作者是Marvin K. Simon ，可以说满足了各种衰落信道下的各种调制方法，比如QAM，MPSK等，总之可以得到各种误码率的闭合表达式。-The book English called Digital Communication over Fading Channels:A Unified Approach to Performance Analysis in the first edition, mainly introduces the BER performance under various channel system, the author is Marvin K. Simon, it can be said that to meet the various modulation method under various fading channel, such as QAM, MPSK and so on, in a word can get the closed form expressions of various bit error rate. Platform: |
Size: 3684352 |
Author:兰芳 |
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Description: MMA用于64qam均衡，已经调试成功，源信号通过程序自动产生，包含了误码率等性能分析-MMA for 64 qam equilibrium, have been debug successful, the source signal is automatically generated by the program, includes the bit error rate performance analysis, etc Platform: |
Size: 2048 |
Author:gongcaili |
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Description: 结合理论课讲解基于Matlab建立不同信道模型：高斯信道、Rayleigh信道，Recian信道及多径衰落信道模型；
给出QAM/GMSK调制方式下在上述信道模型下的误码率性能分析，分析比较两种调制方式的优缺点；
分析信道参数、信噪比对误码率性能的影响； (Based on Matlab, we construct different channel models: Gaussian channel, Rayleigh channel, Recian channel and multipath fading channel model.
The error rate performance analysis of QAM/GMSK modulation mode under the above channel model is given, and the advantages and disadvantages of the two modulation modes are analyzed and compared.
Analysis of channel parameters, signal to noise ratio on the impact of bit error rate performance ) Platform: |
Size: 5120 |
Author:夜丨辰灬 |
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