Search - hf channel

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[Other resource] multitone-jamming DL : 0: 短波信道抗多音干扰的性能分析及其仿真，不用解压密码，直接解压即可。-HF-channel Multi-tone interference performance analysis and simulation, not extracting passwords can be directly extracted.
Date : 2008-10-13 Size : 1.24mb User : liuxinwhu
[matlab] multitone-jamming DL : 0: 短波信道抗多音干扰的性能分析及其仿真，不用解压密码，直接解压即可。-HF-channel Multi-tone interference performance analysis and simulation, not extracting passwords can be directly extracted.
Date : 2025-07-06 Size : 1.24mb User : liuxinwhu
[Game Server Simulator] Realtime_software_simulation_of_high_frequency_rad DL : 0: 基于Ｗａｔｔｅｒｓｏｎ模型的短波信道实时软件模拟韩志学，毕文斌，张兴周摘要：针对短波信道多径、衰落、多普勒频移及扩展等特点，设计了一种基于Ｗａｔｔｅｒｓｏｎ模型的短波信道模拟器，该模拟器采用全软件实现，具有简单易行、可移植性强、费用低等优点，并可实时嵌入到调制解调器中。通过对仿真中关键技术进行改进，提高了系统性能。仿真结果验证了该模拟器的有效性。 -Based on the Watterson HF channel model for real-time software simulation of Han Xue,毕文斌, Zhang Zhou Abstract: In view of short-wave channel multipath, fading, Doppler frequency shift and expansion features such as, design a model based on the Watterson HF channel simulator, the simulation device-wide software implementation with a simple, portability, and low cost, and real-time embedded modems. Through the simulation of key technologies to improve the improve the system performance. The simulation results confirm the validity of the simulator.
Date : 2025-07-06 Size : 60kb User : 张杰
[Books] Experimental_Confirmation_of_an_HF_Channe_Model.ra DL : 0: 短波信道建模的经典文献,1970年,作者wartterson-Short-wave channel modeling for classic literature, in 1970, the author wartterson
Date : 2025-07-06 Size : 1.13mb User : 张杰
[Communication] Watterson DL : 0: 短波信道watterson模型的建模仿真，已经编译通过。-Watterson HF channel modeling and simulation model has been compiled through.
Date : 2025-07-06 Size : 5kb User : 李艳青
[Communication] multipath DL : 1: 短波信道的多径问题仿真，可帮助读者解决短波信道信号的通信仿真问题-HF channel simulation of the multi-path issues to help readers solve the short-wave communications channel signal simulation
Date : 2025-07-06 Size : 5kb User : wangxinyi
[Program doc] A_Novel_Structure_of_Signal_Demodulation_in_High_ DL : 0: In this paper, a novel demodulation structure in high-frequency (HF) channel is introduced and studied.Frequency-offset estimation, ractionally spaced adaptive equalization and carrier recovery techniques are involved.Frequency-offset correction is carried out based on channel impulse response estimation. ractionally spaced adaptive equalization and carrier recovery are combined with nonlinear decision feedback loop structure􀋈 and the initial value of tap coefficients of equalization are obtained from the previous channel estimation. Simulation is conducted under channel parameters with respect to MIL-STD-188-110B using a Monte Carlo technique. The results show this novel demodulation structure is feasible and efficient in HF channel, the symbol error ratio can reach to 10− 3 in 12dB SNR.-In this paper, a novel demodulation structure in high-frequency (HF) channel is introduced and studied.Frequency-offset estimation, ractionally spaced adaptive equalization and carrier recovery techniques are involved.Frequency-offset correction is carried out based on channel impulse response estimation. ractionally spaced adaptive equalization and carrier recovery are combined with nonlinear decision feedback loop structure􀋈 and the initial value of tap coefficients of equalization are obtained from the previous channel estimation. Simulation is conducted under channel parameters with respect to MIL-STD-188-110B using a Monte Carlo technique. The results show this novel demodulation structure is feasible and efficient in HF channel, the symbol error ratio can reach to 10− 3 in 12dB SNR.
Date : 2025-07-06 Size : 182kb User : Lin
[Communication-Mobile] HF-channel-model-used-to-design-a-modem-of-9600-b DL : 0: HF channel model used to design a modem of 9600 bps in 3khz BW
Date : 2025-07-06 Size : 1.67mb User : Esteban
[matlab] paper DL : 0: 短波信道建模中几篇具有里程碑意义的论文英文原文。-HF channel modeling in several landmark papers in English text.
Date : 2025-07-06 Size : 2.38mb User : wuguocheng
[TAPI] Rayleigh_kron DL : 0: 这一信道模型能够描述由电离层和对流层反射的短波信道，以及建筑物密集的城市环境。12瑞利衰落只适用于从发射机到接收机不存在直射信号（LoS，Line of Sight）的情况，否则应使用莱斯衰落信道作为信道模型-This channel model is able to describe the HF channel reflected by the ionosphere and troposphere, as well as building a dense urban environment. 12 Rayleigh fading only applies to from the transmitter to the receiver there is no direct signal (LoS, Line of Sight), otherwise use Rician fading channel as the channel model
Date : 2025-07-06 Size : 1kb User : 朱成龙
[matlab] rayleighnew DL : 0: 瑞利衰落信道，是一种无线电信号传播环境的统计模型。这种模型假设信号通过无线信道之后，其信号幅度是随机的，即“衰落”，并且其包络服从瑞利分布。这一信道模型能够描述由电离层和对流层反射的短波信道，以及建筑物密集的城市环境。-Rayleigh fading channels, the statistical model of a radio signal propagation environment. This model assumes that after the signal through the radio channel, the signal amplitude is random, ie, the " fading" and the envelope of the Rayleigh distribution. This channel model is able to describe the HF channel reflected by the ionosphere and troposphere, as well as building a dense urban environment.
Date : 2025-07-06 Size : 1kb User : tata
[matlab] ChanCCIR5202 DL : 0: Matlab code for the simulation of HF channel with Rayleigh fading
Date : 2025-07-06 Size : 2kb User : minsk
[Documents] HF-radar-sea-echo DL : 0: 高频地波雷达基于海洋回波的通道幅度自校准方法-HF radar sea echo channel amplitude-based self-calibration method
Date : 2025-07-06 Size : 1.04mb User : 汪洋
[Post-TeleCom sofeware systems] resarch-of-BE-on-SWC DL : 0: 短波信道的盲均衡算法研究，主要研究短波信道的特点，找出信号传播中存在的问题，并运用盲均衡算法来处理相关问题。-Blind Equalization Algorithm HF channel, the main features of HF channel research, find out problems in signal propagation and use blind equalization algorithms to deal with related issues.
Date : 2025-07-06 Size : 2.4mb User : 赵振兴
[Program doc] Channel-Equalization-via-Channel-Identification-A DL : 0: The problem of channel equalization via channel identification (CEQCID) that has previously been considered by a handful of researchers is explored further. An efficient algorithm for mapping the channel parameters to the equalizers coeficients is proposed. The proposed scheme is compared with a lattice least squares (LS) based receivers. For the particular application of the high frequency (HF) radio channels, we find that the CEQCID has lower computational complexity. In terms of the tracking performance, also, the CEQCID has been found to be superior to the LS based receivers [4]. We emphasize on the implementation of a fractionally tap-spaced decision feedback equalizer (DFE) and compare that with the T-spaced DFE of [4]. We show that the former is a better choice for the multipath HF channel-The problem of channel equalization via channel identification (CEQCID) that has previously been considered by a handful of researchers is explored further. An efficient algorithm for mapping the channel parameters to the equalizers coeficients is proposed. The proposed scheme is compared with a lattice least squares (LS) based receivers. For the particular application of the high frequency (HF) radio channels, we find that the CEQCID has lower computational complexity. In terms of the tracking performance, also, the CEQCID has been found to be superior to the LS based receivers [4]. We emphasize on the implementation of a fractionally tap-spaced decision feedback equalizer (DFE) and compare that with the T-spaced DFE of [4]. We show that the former is a better choice for the multipath HF channel
Date : 2025-07-06 Size : 411kb User : hamed
[Other] book_HuZhongYu DL : 0: 胡中豫教授所著的《现代短波通信》。本书对现代短波通信的主要技术、应用系统和发展趋势等进行了全面的阐述。主要内容包括：现代短波通信概论、短波通信信道、短波自适应通信、短波扩频通信、短波通信终端、短波天线与自动调谐技术、短波通信系统数字化和短波通信网络等。全书内容丰富，图文并茂，条理清晰，说理深入浅出，是一本很好的短波通信技术指导书。-In this book, the application and development of modern HF communication are comprehensively described. The main contents include the introduction of HF communication, the HF channel, etc. It is a very good instruction book of HF communication.
Date : 2025-07-06 Size : 12.18mb User : 王大青
[3G develop] channel-model DL : 0: 这是一个经典的信道模型matlab程序，多径衰落，对于短波通信的仿真具有很好的参考价值-This is a classic channel model matlab program, multipath fading, for the simulation of HF communication has a good reference value
Date : 2025-07-06 Size : 10kb User : yancheng
[Post-TeleCom sofeware systems] MATLAB-HF-SCFDE DL : 0: 这是毕业相关代码，关于SC-FDE系统在HF下的运用，有一些信道估计和频域均衡算法。-This is the graduation-related code on SC-FDE system used in HF under some channel estimation and frequency domain equalization algorithm.
Date : 2025-07-06 Size : 2.33mb User : zzz
[Other] ADA521158 DL : 0: NATO Military Messaging in the Tactical Domain – Performance Issues of an HF Channel -NATO Military Messaging in the Tactical Domain – Performance Issues of an HF Channel
Date : 2025-07-06 Size : 530kb User : memami
[Industry research] Document-melp-600 DL : 0: A 600 Mbs Melp Vocoder for use of HF channel
Date : 2025-07-06 Size : 65kb User : kraken

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