搜索资源列表
dPe
- 双极性码元的误比特率计算，画出误比特率曲线。-bipolar symbol of the bit error rate calculation, to give the BER curves.
sPe
- 单极性码元的误比特率计算，画出误比特率曲线。-Unipolar symbol of bit error rate calculation, to give the BER curves.
huffman_src
- I ve written some many years ago dynamic Huffman algorithm to compress and decompress data. It is mainly targeted to data with some symbols occuring more often than the rest (e.g. having some data file consisted of 3 different symbols and their total
eg6_11
- 完成M=4的DPSK通信系统的蒙特卡洛仿真，信号波形为snr2ps(snr_in_dB) 求出以dB为单位的给定信噪比的比特误码率和符号误码率.-Completion of M = 4 of the DPSK communication system Monte Carlo simulation, the signal waveform is snr2ps (snr_in_dB) calculated in units of dB signal to noise ratio for a give
MATLAB
- 产生长度为1000的标准正太分布的随机信号，画出时域波形及频谱； 采用u=255的非均匀PCM编码，每符号为8bit，画输入-输出关系图； 计算信号量化噪声比（SQNR）； 信道误码率为10-3； 解码，并画出u律反变换后的信号时域波形及频谱。 扩展要求： 采用均匀PCM、量化级数可变、信道误码率可变。 - have a standard len
QAM的蒙特卡罗仿真程序
- 当M=4时，QAM的蒙特卡罗仿真程序，绘出误符号率和误码率曲线，并和理论曲线比较。-When M = 4 Shi, QAM of the Monte Carlo simulation program, draw the symbol error rate and bit error rate curve, and and the theoretical curves.
suanshubianma
- 算术编码是将累积分布函数的区间（0，1）分成许多互不重叠的小区间，每个信源符号对应于各个小区间，每个小区间的长度等于这个信源符号的概率分布值，在此小区间内取一点，取该点二进制小数点后l位作为这个信源符号的码字。把这基本思想运用到信源符号序列中来，能计算出信源符号序列的累积分布函数，使每个符号序列对应于累积分布函数上的不同区间，在此区间上取一点，将其二进制小数点后l位作为这符号序列的码字，只要这些区间不重叠，编的的码即为算术编码。-Arithmetic coding is the cumulati
bianmayuanli
- 算术编码方法是将被编码的一则消息或符号串（序列）表示成0和1之间的一个间隔（Interval），即对一串符号直接编码成[0,1]区间上的一个浮点小数。符号序列越长，编码表示它的间隔越小，表示这一间隔所需的位数就越多。信源中的符号序列仍然要根据某种模式生成概率的大小来减少间隔。可能出现的符号概率要比不太可能出现的符号减少范围小，因此，只正加较少的比特位。-Arithmetic coding method is to be a coded message or symbol strings (seq
8PSK_mod_simulator
- Simulation of a baseband 8PSK modulator - TX : a pseudo random bit stream generation, Serial to parallel conversion, 8PSK Mapping (Gray mapping), Signal power computation - Channel : AWGN channel - Plot constellations-Simulation of a baseband 8
Traversalalgo
- Codes". Huffman coding uses a specific method for choosing the representation for each symbol, resulting in a prefix code (sometimes called "prefix-free codes") (that is, the bit string representing some particular symbol is never a prefix of th
he_fu_man_bian_ma
- 假设一个文件中出现了8种符号S0，SQ，S2，S3，S4，S5，S6，S7，那么每种符号要编码，至少需要3bit。假设编码成000，001， 010，011，100，101，110，111。那么符号序列S0S1S7S0S1S6S2S2S3S4S5S0S0S1编码后变成 000001111000001110010010011100101000000001，共用了42bit。我们发现S0，S1，S2这3个符号出现的频率比较大，其它符号出现的频率比较小，我们采用这样的编码方案：S0到S7的码辽分别01
SERBER
- 用matlab 是实现qpsk的方针算法，并计算方针和理论的符号错误率和比特错误率~~请大家指正-Qpsk with matlab is to achieve the policy algorithm, and calculate the principle and theory of symbol error rate and bit error rate ~ ~ please correct me
Incomplete
- Add pilot symbols to the input data just before transmission 2. Implement cyclic prefix (CP), use 10 of symbol length. Divide the 64 input data points into 8-bit streams, generate and append the CP based on each symbol 3. Include complex
OFDM_PSK_AWGN
- You can use it to simulation OFDM in BPSK,QPSK and 8PSK in AWGN channel.You can see the symbol error rate and bit error rate from these simulation.
leastsquare
- Inter-symbol interference if not taken care off may cause severe error at the receiver and the detection of signal becomes difficult. An adaptive equalizer employing Recursive Least Squares algorithm can be a good compensation for the ISI probl
bitallocate
- 通信系统关键技术仿真--比特加载算法 函数完成在给定子信道信息、误码率和码元速率的前提下子信道的比特分配。-Key technology communication system simulation- bit loading algorithm function to complete in a given sub-channel information, the error rate and symbol rate sub-channel under the premise of the
psk
- 完成M=4的PSK通信系统的蒙特卡洛仿真，信号波形为sbr2p(snr_in_dB) 求出以dB为单位的给定信噪比的比特误码率和符号误码率-Completion of M = 4 of the PSK communication system Monte Carlo simulation, the signal waveform is sbr2p (snr_in_dB) calculated in units of dB signal to noise ratio for a given bit
QAM
- 编写一个含QAM传输的发送和接收模块 1)分别采用复基带仿真和实带通仿真两种形式 a) 实带通仿真时, 载波频率为符号率的4倍 b)发端采用滚降系数0.5的根号升余弦滤波器 2)画出Eb/N0=15dB时的接收波形(收滤波前),取100个采样 3)画出发端输出的眼图和收端过匹配滤波后的眼图(画眼图时不加噪声) 统计误符号率和误比特率与Eb/N0的关系,画出曲线, 与理论计算的曲线相对比 -Prepare to send of one with QAM transmis
simulation_2psk
- 求出以dB为单位的给定比特信噪比的误符号率-Find the symbol error rate of a given bit signal-to-noise ratio in dB
v06_03_dem_2up_arrange
- 一个OFDM符号128个有效符号，插入128个虚拟子载波 符号率（即有效数据率）fsymbol，而发送速率（需要包括虚拟子载波）2fsymbol 输入的数据需要2倍的发送数据率，以便进行内插，实现位定时跟踪，即4倍fsymbol采样率的调制信号 OFDM symbol Nfft=128 points 一个OFDM符号数据点 Nfft*2 = 256 ， Guard Interval点 ＝Ng*2=64 -128 of an OFDM symbol of a val