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DSP
- 位同步也叫码元同步或比特同步，在数字通信系统中，接受端不论采用什么解调方式，都要用到码元同步。再模拟通信中不存在码元同步。我们知道消息是通过一连串的码元来表示并传递的，这些码元一般均具有相同的持续时间，接收端就收这些码元序列时，都必须知道每个码元的起该产生一个码元定时脉冲序列，-Bit synchronization code yuan, also known as synchronous or bit synchronization in digital communication syste
ofdm-qpsk-mycreatechannel
- 衡量一个数字通信系统性能好坏的指标很多，误码率性能就是一个重要的指标。误码率是指错误接收的码元数载传输总码元数中所占的比例。在该章中，我们将通过MATLAB仿真在发送平均功率和传输速率相同的情况下-A digital communication system performance measure indicators of good or bad a lot of bit error rate performance is an important indicator. Bit error r
adder
- 这是一个用VHDL语言描述的8位带符号加法器,希望对大家有用-This is a descr iption using VHDL, 8-bit adder with a symbol, we want to be useful
ABlindEstimationAlgorithmforPNSequenceinDSSSSignal
- 这是一篇很好的有关信道估计的文章， 可以用来快速的了解信道估计的基本内容-In this paper, a method for fast blind estimation of DS-SS signal is proposed which aims at the Direct-Sequence Spread- Spectrum (DS-SS) signals with parameters unknown. Considering the characteristic th
bit-sychronization
- 全数字锁相环实现位同步，通过3个触发器实现码元的边沿提取。基带码采用M序列仿真。-DPLL to achieve bit synchronization, achieved through three trigger symbol of the edge extraction. Baseband codes using M-sequence simulation.
Pe_SNR
- 本次仿真研究多幅度电平信号误码率与信噪比之间的关系，系统框图如上。假设考虑8幅度电平，则根据流程首先需要用一个随机数发生器产生在(0,1)间的均匀随机数，然后将(0,1)区间均匀划分为(0,0.125)、(0.125,0.25)、(0.25,0.375)、(0.375,0.5)、(0.5,0.625)、(0.625,0.75)、(0.75,0.875)、(0.875,1)这些子区间，并分别对应于一个3bit符号000、001、010、011、100、101、110、111，接着分别映射到-7d、
Design of Digital Simulation system for QAM
- The digital simulation system using MATLAB to illustrate the Quadrature Amplitude Modulation (QAM). QAM is a modulation scheme to convey two digital bit streams which can be converted to symbol signals by modulating the amplitudes and the phase of
Lab #5 -Digital Modulation
- Basic understanding of digital modulation concepts and associated characterization methods (such as eye diagrams and constellation diagrams). The use of Sigma-Delta techniques to achieve a 2-bit/symbol data stream from a 16-bit input data stream.
2askSER
- 实现matlab下2ASK通过高斯白信道采用相干解调 的符号信噪比/误符号率/误比特率计算 。以及调制后波形的显示，包括2FSK仿真误码率','2FSK理论误码率图形。(Calculation of symbol signal-to-noise ratio / symbol error rate / bit error rate of 2ASK through coherent demodulation in white channel under matlab. And modulation
QRCode-Android-master
- The two-dimensional barcode / two-dimensional code (2-dimensional bar code) is the symbol information of the black and white images that are distributed in a plane (two-dimensional direction) in a certain geometric pattern. The concept of "0&quo