1modulation

说明：  very important dtmf project

说明：  极化码极化信道仿真，信道极化是信道合并与信道分裂两种信道操作的结果。在上述两种操作下，原本相同的N个W信道产生了极化现象，其中一部分信道的信道容量趋近于1，另一部分信道的信道容量趋近于0。(Channel polarization is the result of channel merging and channel splitting. Under the above two operations, the original n w channels have polarization phenomenon. The channel capacity of one part of the channel approaches to 1, and the channel capacity of the other part approaches to 0.)

说明：  Millimeter-wave Beamforming and Phased Arrays

说明：  多子带自适应算法，能够有较好的鲁棒性以及稳态特性。(The multi-subband adaptive algorithm has better robustness and steady-state characteristics.)

说明：  Proteus 8051+LCD+PWM电机调速测速（仿真+源码）(Proteus 8051+LCD+PWM Motor speed measurement (simulation + source))

基于MATLAB的OFDM系统仿真及性能分析的一篇论文。内含matlab仿真程序，有循环前缀，信道估计。(OFDM based on MATLAB system simulation and performance analysis of a thesis. Intron Matlab simulation program, cyclic prefix, channel estimation.)

说明：  产生随机信号，采用4fsk调制方式通过一个水声信道，再采用非相干解调(Generate random signal, use 4FSK modulation to pass through an underwater acoustic channel, and then use incoherent demodulation)

ADIBEAM Abstract—the increase in navigation accuracy demanded by EGNOS and Galileo and their future evolution encourages the study and design of advance receiver architectures. In that direction, the ADIBEAM project focuses on the design of high accuracy ground stations, specifically GNSS Reference Stations, in order to improve its robustness in front of multipath and interference errors with the goal of achieving centimeter level tracking accuracy. The adoption of antenna arrays and digital beamforming at the ground reference station receivers is one of the most promising approaches to cope with errors induced by multipath and interference.

说明：  本文主要从自适应调制的算法及实现出发，引入了OFDM子载波分组的概念，详细阐述了五种固定阈值算法和子带BER预估计算法的原理及实现，并在此基础上加入自适应编码，实现自适应调制与编码。(Based on the algorithm and implementation of adaptive modulation, this paper introduces the concept of OFDM subcarrier grouping, elaborates the principle and implementation of five fixed threshold algorithms and subband BER estimation algorithm, and adds adaptive coding to realize adaptive modulation and coding.)

vawecom gsm modem gsm,gprs,ip stack documentation(vawecom gsm modem gsm, gprs. ip stack documentation)