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bt_v01
- 通信物理层处理，包括发射机和接收机，内容有前导处理，信道估计，信道编解码，BPSK、QPSK和8PSK调制与解调等。-Communication the physical treatment, including the transmitter and receiver, the content is leading processing, channel estimation, channel decoding, BPSK QPSK and eight PSK modulation and d
analisa
- This model shows the implementation of a QPSK transmitter and receiver. The receiver addresses practical issues in wireless communications, e.g. carrier frequency and phase offset, timing offset and frame synchronization. The receiver demodulates the
chapter12
- 仿真Alamouti,多发送多接收空时编码性能，调制方式为QPSK-Simulation Alamouti, multi-multi-receiver transmission performance of space-time coding and modulation scheme is QPSK
802.11
- matlab环境下，采用802.11a系统物理层参数，一个长训练字与6个OFDM符号构成一帧，瑞丽信道，多普勒100Hz，采用QPSK调制，接收端估计误比特率-matlab environment, using 802.11a physical layer parameters, a word with six long training OFDM symbols of a frame, Ruili channel, Doppler 100Hz, using QPSK modulation, t
Filtro-3-vias
- This a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery lo
ex4
- 仿真采用QPSK和16-QAM调制时，接收机采用理想信道估计和利用训练符号进行信道估计的误比特率性能-The simulation using QPSK and 16-QAM modulation, receiver with perfect channel estimation and using training symbols for the bit error rate performance of the channel estimation
Direct-sequence-spread
- 发射机的设计是采用m序列来扩展二进制数据流，将其扩频为宽频信号，并采用QPSK调制方式将信号调制后发送出去。信号经过AWGN信道传输到接收端。接收机采用相干解调原理解调信号，采用的解扩码序列与发射机扩频码序列完全相同，信号经解扩调制后，带宽恢复原始宽度。-Transmitter design is the use of m sequence to expand the binary data stream, the spread spectrum is a broadband signal, a
QPSK_receiver
- QPSK软件接收机,对QPSK整个接收过程进行仿真，包括载频捕获、相位跟踪、滤波、判决等。-QPSK software receiver for receiving QPSK whole process simulation, including the carrier frequency acquisition, phase tracking, filtering, and other judgments.
main_no_offset_2
- 假设截获了一段短波数字通信的信号，要求解调出最终的信息，每组解调出来后，将10组信息组合起来，恢复最终的信源输出数据。 先验信息：两组数据文件，编号为1、2，每组I、Q两路存放，格式为“int16”，采样率为9600Sa/s，其中第一组为单径情况，第二组为多径情况。 参数符合MIL-STD-188-110A标准； 同步序列为syn=seq.dat，BPSK调制； 接收机频率稳定度高于1e-6。 文件中有效信息总长度为333.75s，其中同步头长为5/12s，每时隙1/6s，训
G_QPSK
- 假定接收端已经实现载波同步，位同步（盲信号解调重点要解决的问题：载波同步（costas环（未见到相关代码）），位同步（Gardner算法（未见相关代码）），帧同步）-Generating QPSk signal, assuming that the receiver has to achieve carrier synchronization, bit synchronization (blind signal demodulation focus to solve the problem: c
fftduofuhao
- 关于OFDM的发射与接收完整源码，包括QPSK调制，加噪与CP等-On OFDM transmitter and receiver full source code, including QPSK modulation, noise and CP, etc.
ofdmcodesforinputoutput
- OFDM code for transmitter signal and the receiver using QPSK
mengte
- 使用蒙特卡罗方法模拟AWGN信道中QPSK的数字BER，并附加QPSK_AWGN.m脚本。 修改具有ZF接收机的系统中的瑞利平坦衰落信道的情况的代码。 在同一个图中绘制其数值和分析BER。(Use the Monte Carlo method to simulate the numerical BER of QPSK in AWGN channels, with the QPSK_AWGN.m scr ipt attached. Modify the code for the case o
TELE - 653 Digital Coding
- e Handbook Entry Communication concepts: Fourier transforms, random signals, Transmitter and receiver filters, matched filter, Nyquist criterion. Digital Modulation schemes: M-ary ASK, QPSK, FSK, CPM, spectral analysis of modulated signals, ML and
Optical Quadrature psk (Coherent Detection)
- a coherent optical receiver for demodulating optical quadrature phase-shift keying (QPSK) signals. ... Third, this scheme is applicable to multilevel modulation formats such as M-array PSK and quadrature amplitude modulation (QAM). First contribution
802.11a simulink
- 基于WiFi 802.11a协议的无线通信系统的开发 端到端的802.11a的物理层，自适应调制，前向纠错码，ofdm传输，高斯白信道仿真 Viterbi解码等(End-to-end 802.11a physical layer * All mandatory and optional data rates: 6, 9, 12, 18, 24, 36, 48, and 54 Mb/s * BPSK, QPSK, 16-QAM, 64-QAM modulations * Forwa
MIMO1
- 实现基于STBC的MIMO_OFDM通信系统在不同信噪比情况下接收端的误比特率的仿真。发射端包括基于基带调制、空时编码、导频插入、IFFT、串并合并以及添加循环前缀；接收端包括去除循环前缀、取出导频估计信道、FFT运算以及并串合并，空时解码等。仿真中采用QPSK、空时编码采用4*3的复正交空时编码矩阵。OFDM子载波数为100，每个子载波传输66个符号，每个符号2比特。IFFT长度为512个符号。发射天线为3个接收天线为2个。(The BER simulation of MIMO_OFDM co