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cp0202_transmitter_2pam_ds
- 主要用于直接序列扩展频谱的脉冲幅度调制当中传输的产生
cp0201_waveform
- 主要用于扩展频谱脉冲幅度调制当中波形的产生
MATLABtoGenerateMSequence
- 由十其强人的功能而被广泛应{IJ十很多工程领域。在扩频通信，}，通常的做法是{IJ扩频序列J信号和乘， 从而得到频谱的扩展或扭缩，因而扩频序列的性能直接决定着通信质量。伪随机序列，}，的m序列和Cold序列最常{}J们一扩 频序列。该文首先简中介绍了m序列和Cold序列的原理、性能和构造方法.接着在MAfLAB }}})IJ M语言编程实现它们的产 生和分析。仿真结果验证了该方法的正确性和可行性。该方法简练直观，适合工程技术人员参考。
8
- 8单径瑞利信道中的四发四收V-BLAST： (1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量16QPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。 (2) 计算所设计方案的频谱效率是多少，单位为bit/Hz/s。-8 Single-Path Rayleigh Channel Four received four V-BLAST: (1) Please design a specific guide-a
MATLAB
- 本文完成qpsk信号生成，查看频谱图，学习曲线的绘制-This complete qpsk signal generation, see spectrum, LMS learning curve drawing
ReaderTransmit_20070715
- RFID读卡器与标签之间在AWGN和加入其它读写器干扰下的BER仿真，及频谱仿真。在SIMULINK下的-Between RFID tag reader and add in the AWGN and the interference of other reader of the BER simulation, and the spectrum simulation.
Pulse_Shaping
- 脉冲成型滤波器，用来是形成的频谱更加光滑，得到更好的仿真效果，用于CDMA，WCDMA，和 TDSCDMA中-Pulse shaping filter is used to form the spectrum is smoother, better simulation results, for CDMA, WCDMA, and TDSCDMA in
OFDM
- 基于自适应压扩法降低OFDM系统的峰均比。正交频分复用（OFDM，Orthogonal Frequency Division Multiplexing）技术可以出色的对抗抗多径衰落、消除码间干扰且具有极高的频谱利用率。此外它还采用了快速傅立叶变换，大大降低了收发机的实现复杂度，因此被广泛地应用于HDSL、ADSL、DAB、HDTV、WLAN等领域中。 但是，目前OFDM技术还有很多关键问题没有得到有效解决，如对频偏敏感、高峰均功率比问题等，这些都限制了OFDM技术的近一步广泛应用。本论文主要
frequencyspread
- 时变系统的频谱扩展，（信道是平坦的）仿真结果为：滤波后高斯过程的功率谱密度和由滤波器产生的相关高斯序列的时域值-Time-varying system, spread spectrum, (the channel is flat) simulation results as follows: the filtered Gaussian process power spectral density and produced by the filter related to the value of
simulations
- 无线通信中的认知无线电协作频谱感知方针代码-simulation code for cooperative spectrum sensing in cognitive radio
matlab
- 认知无线电中频谱检测技术周期性检测和能量检测-congnitibe radio spectrum sensing
EnergyDetectionAlgorithmInvestigatioonCooperative.
- 简要介绍了认知无线电中基于能量检测的频谱感知方法,在分析能量检测法原理和性能基础上,研究了噪声的不确定性对检测性能的影响. 仿真表明,能量检测法是一种简单、有效的频谱感知方法.-A brief introduction of cognitive radio spectrum sensing based on energy detection method, the analysis and performance of energy detection principle, based on t
CooperativeSpectrumSensingBasedoSNRComparisonforCo
- 认为不同的认知节点信噪比( SNR) 导致了各节点本地检测结果的可靠性不同,故在此基础上提出了一种基于融合中心进行SNR比较 的认知无线电协作频谱检测算法。-That the different cognitive node SNR (SNR) has led to the detection results of the reliability of the local node is different on this basis it was proposed based on f
qamand16psk
- 主要是QAM与16PSK频谱仿真、误码率比较仿真以及各自的星座图-Mainly QAM spectrum with 16PSK simulation, emulation, and error rate between the respective constellation
gmsk1
- GMSK调制的简单实现，GMSK提高更紧凑的频谱-This code is about GMSK matlab realized code
Cprogram
- 该程序是通信中认知无线电的频谱预测模型的相关源代码，对通信方面的同学非常有用，带平台-The program is the communication of cognitive radio spectrum prediction model related to the source code, for communications students very useful, with platform
ofdm
- MIMO．OFDM系统的子载波、功率和比特分配 MIMO技术能不增加系统带宽却提高系统容量和频谱利用率-The MIMO.OFDM system subcarrier, bit and power allocation MIMO technology can not increase the bandwidth of the system can improve the system capacity and spectrum efficiency
CPFSK-demode-DSP
- 简单介绍了CPFSK的基本原理，对其调制和解调算法进行了讨论．通过对过零检测、FFT频谱幅值 法和非相干解调算法的比较，可以看出采用非相干解调方法具有较好的误码特性-A brief introduction to the basic principle of CPFSK modulation and demodulation algorithm discussed. Can be seen that the use of non-coherent demodulation method ha
16QAM
- 16QAM调制与解调，可以实现不同信道噪声下的误码率计算，并画出频谱和星座图-16QAM modulation and demodulation error rate calculated under different channel noise and draw the spectrum and constellation
对OFDM信号的频谱感知的循环特征检测
- 对802.11协议模拟的OFDM信号的两种速率6Mbps（BPSK调制）和12Mbps（QPSK调制）进行循环谱检测来验证对OFDM信号检测的可行性。(Cyclic spectrum detection is performed on two rates of OFDM signals simulated by the 802.11 protocol, 6 Mbps (BPSK modulation) and 12 Mbps (QPSK modulation) to verify the fea