MATLAB的QPSK在瑞利、高斯和莱斯信道下仿真

技术文档：OFDM联合极大似然法，符号和载波频偏估计，利用循环前缀的冗余信息实现ML估计，不需额外插入导频，其频率估计用于跟踪模式，时间估计用于捕获模式。(OFDM ML estimator for time and frequency)

说明：  产生正弦信号时域波形及频谱，并通过希尔伯特滤波器。其中希尔伯特滤波器有两种产生方式，一是使用MATLAB自带的FDAtool；二是程序编写。(The time-domain waveform and spectrum of sinusoidal signal are generated and passed through Hilbert filter. There are two ways to generate Hilbert filter, one is to use FDAtool in MATLAB, the other is to write programs.)

说明：  用51单片机完美地解决凝露现象。防止元件老化(The dew phenomenon can be perfectly solved by 51 single chip computer. Preventing component ageing)

基于BD-SVD分解的下行CoMP预编码算法仿真(Based on the BD-SVD decomposition of the downlink the CoMP pre-coding algorithm simulation)

说明：  常用的两种信道估计算法，基于matlab，可以正常运行(Channel estimation algorithm, based on MATLAB)

说明：  熟悉OQPSK的基本原理、调制解调技术，掌握MATLAB中M文件的使用及相关函数的调用方法，在此基础上通过MATLAB编程来实现OQPSK的调制与解调,完成项目(OQPSK, modulation and demodulation, noise ,MATLAB, M file.)

说明：  td_scdma的完整程序，包括发送和接受两部分，涉及信道编解码，交织，扩频等(td_scdma complete process, including sending and receiving two parts, related to the channel encoding and decoding, interleaving, spreading, etc.)

Huawei UMG89000 hardware introduction ISSUE1.1

说明：  In this paper, a new direction-of-arrival (DOA) estimation method based on multiple Toeplitz matrices reconstruction is proposed for coherent narrow band signals with a uniform linear array (ULA).(Even in the case of a low signal-to-noise ratio and low snapshot number with half the array aperture reduced, the new method provides good performance on estimation and resolution.)

一种基于遗传算法的OFDMA系统的跨层资源分配(Cross-layer resource a genetic algorithm-based allocation of OFDMA system)