Description: 单载波频域均衡SCFDE的MATLAB源码，包括迫零均衡和MMSE均衡-Single-carrier frequency domain equalization SCFDE the MATLAB source code, including zero forcing and MMSE balanced balanced Platform: |
Size: 997376 |
Author:zuoxiaoya |
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Description: 这个程序讲得主要是有关单载波频域均衡的，对他进行了分析，采用的是MMSE均衡-This program speaks mainly about the single-carrier frequency domain equalization, and for his analysis, using the MMSE equalizer Platform: |
Size: 4096 |
Author:lihuihui |
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Description: The main code is called "comparison of equalization schemes".
It uses functions, defined seperately to compute the bit error rate for different typs of equalizers.
That means times domain equalizer (TDE) with minimum mean square (MMSE) and zero forcing (ZF) algorithm,time domain decision feedback equalizer (DF_TDE) and linear frequency domain equalizer (FDE) with MMSE and ZF algorithms are used.For all simulations QPSK symbols and a tapped delay line channel with white gaussian noise are used.
Allthough the codes should be regarded as one package every single function can be of good use for other simulations.
With best regards,
Andreas Platform: |
Size: 6144 |
Author:Sokolov |
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Description: 根据LTE上行SIMO接收机特点，对MMSERISIC均衡器进行简化修改，得到MMSEFDE均衡器,该均衡器所有步骤全在频域进行，大大降低了均衡算法的复杂度。-LTE uplink SIMO receiver according to the characteristics of the MMSE-RISIC equalizer to simplify modification, by MMSE-FDE equalizer, the equalizer all the steps in full in the frequency domain, greatly reduces the complexity of balancing algorithm. Platform: |
Size: 4096 |
Author:王凤 |
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Description: • Plot the noisy speech signal both in time-domain and frequency-domain.
• 进行含噪语音信号的时频分析
• Design a proper filter to remove noise from the speech signal.
• 设计合适滤波器进行去噪
• Plot the clean signal both in time-domain and frequency-domain.
• 进行去噪后信号的时频分析
• Design a Reverberator using 4 Comb filters and 2 All-pass filters, as shown in the following Figure, to generate reverberated and reflected sound with the capability of passing it through an equalizer.
• 设计一个混响器（用四个梳状滤波器和两个全通滤波器（下图所示））来产生回声（通过一个均衡器（用于调整频率的补偿和衰减））
-• Plot the noisy speech signal both in time-domain and frequency-domain.
• 进行含噪语音信号的时频分析
• Design a proper filter to remove noise from the speech signal.
• 设计合适滤波器进行去噪
• Plot the clean signal both in time-domain and frequency-domain.
• 进行去噪后信号的时频分析
• Design a Reverberator using 4 Comb filters and 2 All-pass filters, as shown in the following Figure, to generate reverberated and reflected sound with the capability of passing it through an equalizer.
• 设计一个混响器（用四个梳状滤波器和两个全通滤波器（下图所示））来产生回声（通过一个均衡器（用于调整频率的补偿和衰减））
Platform: |
Size: 49152 |
Author:hanling |
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Description: Designs a frequency-domain and time-domain FIR equalizer for
a single-input single-output (SISO) channel.
Frequency-domain equalization uses a Chebychev criteria and
is specified in terms of frequency response functions.
It is a convex problem (which can be formulated as an SOCP):
-
where H is the frequency response function and our variable
is the filter impulse response h. Function G is the unequalized
frequency response and G_des is the desired freq response.
Time-domain equalization immediately designs the impulse
response function by specifying the problem in time (it s an LP):
minimize max_{t neq D} |g_tilde(t)|
s.t. g_tilde(D) = 1
Platform: |
Size: 1024 |
Author:wwcj |
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Description: 采用基于FPGA的频域加窗与反傅立叶变换的数字幅频均衡功
率放大器:此方案采用高速FPGA，以及配套的高速AD、DA 对信号进行采样，傅
立叶变换，在频域上对信号进行加窗操作，然后通过傅立叶反变换将波形还原。
以得到需要的频谱幅度。-FPGA-based frequency domain using the windowed Fourier transform with the number of pieces of anti-band equalizer amplifier: This program uses high-speed FPGA, and supporting high-speed AD, DA sampling the signal, Fourier transform in the frequency domain windowing the signal operation, then the Fourier inverse transform to restore the waveform. To get the desired spectrum range. Platform: |
Size: 2832384 |
Author:zhao |
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Description: 用于控制音质的NF型调制控制电路，因仅能进行低音和高音的增强和衰减，所以不能进行细微的频率特性的补偿。述有，如果想使可听频带域的任意频率均可变，一般使用被称为图形均衡器的装置。这里使用DSP的例子在不断增加，如果要使用简单的电路则使用OP放大器较好。这种图形均衡器是将补偿的中心频率分割为5～7份，分别进行控制，由5个RLC电路组成，十分实用。分割的各个频率是以可听频率范围为对称轴均等分配而决定。-NF-modulation control circuit to control the sound quality, bass and treble enhancement and attenuation, it is not due to only subtle frequency characteristics of compensation. Described there, if you want the audible frequency band domain at any frequency can be changed, the general use of the device is called a graphic equalizer. Example of using DSP is increasing, if you want to use a simple circuit using OP amplifier is better. The graphic equalizer is the center frequency of the compensation split 5-7, respectively, to control by five RLC circuit is very useful. The split frequency is audible frequency range for the axis of symmetry equalization allocation decisions. Platform: |
Size: 224256 |
Author:邓杰文 |
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Description: large.
The second technique is the time–frequency domain equalization with channel shortening [29]. A time-domain equalizer is inserted to reduce the MIMO channels to the ones with the channel length shorter than or equal to the CP length, and then, a one-tap frequency-domain equalizer is applied to each subcarrier. When the MIMO channels are shortened by the time-domain equalizer, residual ICI and ISI are introduced. They cannot be eliminated by the subsequent frequency-domain equalizer and, thus, limit the performance. Platform: |
Size: 295936 |
Author:uunuu0717 |
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Description: 实现功能
1) 在用户界面设置录音时长并实时录音
2) 调节放音幅度、播放原声并进行时域、频域绘图
3) 对收集的声音进行倒放处理并播放
4) 对收集声音进行回声处理并播放，比对时域波形
5) 对收集声音进行回响处理并播放，比对时域波形
6) 对经过回声处理的声音进行回音消除并比对时域波形
7) 采用自适应滤波器消除采集声音中的环境噪音
8) 设计相应的滤波器组成均衡器对收集的声音进行处理并播放
9) 男女声识别
10) 设计参数可调的滤波器对采集的声音进行处理
-1) in the user interface to set the recording length and real-time recording
2) to adjust sound, played acoustic amplitude and time domain, frequency domain mapping
3) to upend the collection of sound and play
4) to collect sound echo processing and playback, than in the time domain waveform
5) to collect sound echoes, processing and playback, than in the time domain waveform
6) to echo and treated with echo s voice than in the time domain waveform
7) using adaptive filter to eliminate ambient noise in acquisition voice
8) to design the corresponding filter to process the voice of equalizer to collect and display
9) NanNvSheng recognition
10) tunable filter design parameters for voice processing
Platform: |
Size: 22076416 |
Author:Tony |
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Description: We first show that part of the IFFT in the transmitter in an OFDM system can be shifted to the receiver, while a conventional one-tap frequency-domain equalizer is still applicable. Platform: |
Size: 599040 |
Author:avv |
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