MIMO

说明：  CONVERT A MATRIX TO LOWER TRIANGULAR MATRIX

基于梳状导频图案的OFDM系统估计，采用LS信道估计方法，和线性插值法，信道采用瑞丽多径信道。(The OFDM system based on comb pilot pattern estimation adopts LS channel estimation method and linear interpolation method, and the channel adopts the Ruili multipath channel.)

这是研究欧洲DVB-T标准的一套合集，主要介绍了DVB-T单频网的同步技术，以及系统设计和实现。其中对DVB-T单频网进行了详细的讲解，对研究我国的数字电视广播技术也有很好的借鉴作用。(This is the study of the European DVB-T standard a collection, mainly introduces the synchronization technology of DVB-T single frequency network, and the system design and implementation. It make a detailed explanation of DVB-T single frequency network, also have a very good reference for digital television broadcast technology research in china.)

this document gives the basics of gprs concepts in gerat detail

说明：  提供了降低OFDM系统PAPR的一种经典算法，即PTS算法，有效抑制了系统的峰均比(A classical algorithm to reduce the PAPR of OFDM system, namely PTS algorithm, is provided, which can effectively suppress the peak-to-average ratio of the system)

QPSK调制解调函数 MatlaB自编函数(QPSK modulation and demodulation functions)

数字集群信道编解码程序，包括BCH和RCPC,属于欧洲ETSI Tetra标准。(digital trunking channel coding and decoding procedures, including BCH for RCPC and, European ETSI Tetra standard.)

matlab 实现MIMO-OFDM的信道估计(Channel estimation for the implementation of MIMO-OFDM by MATLAB)

（1）请推导出单径瑞利信道中的BPSK相干解调的理论误码率性能，并画出比特信噪比与误码率的关系曲线。 （2）在单径瑞利信道中，请设计一种时分的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK的误码率性能，画出比特信噪比与误码率的关系曲线，并与(1)的曲线进行对比。 ((1) derived from single-Path Rayleigh channel coherent demodulation of BPSK theoretical bit error rate performance and draw-bit signal to noise ratio and bit error rate curve. (2) in a single Path Rayleigh channel, please design a guided night-assisted channel estimation methods, using Simulink simulation, surveying BPSK BER performance, drawn-bit signal to noise ratio and bit error rate curve, and with (1) comparing the curve.)

说明：  OFDM多径信道的仿真和模拟,有效的仿真了多径信道(simulation of OFDM through multipath channel)