QPrlgood

Dopod 838官方拆机及维修手册,很详细的说明，照着他一步一步拆，很简单的，我的手机坏了就是照他拆了修的。(Dopod 838 official TBM Break-down and maintenance manual, a very detailed explanation, he told a step-by-step demolition very simple, I had a bad cell phone as he was taking off the surface.)

说明：  51单片机读取sht30，通过iic通信 亲测可用。。。。。。(sht30 read iic write and test ,read tempreture and humidity success)

开关GPRS,定时开启或者关闭，保护流量(TURN ON GPRS OR TURN OFF)

说明：  LDPC码的mackay构造法，PEG构造法，QC-LDPC构造，SPA译码算法(LDPC codes are constructed by Mackay, PEG, QC-LDPC and Spa decoding algorithms)

ppts for image processing

MIMO指多输入多输出，MIMO技术大致可以分为两类：发射/接收分集和空间复用。传统的多天线被用来增加分集度从而克服信道衰落，具有相同信息的信号通过不同的路径被发送出去，在接收机端可以获得数据符号多个独立衰落的复制品，从而获得更高的接收可靠性。这种技术往往要结合多天线技术，而多天线技术在移动通信中得到了广泛的研究。(MIMO refers to Multiple Input Multiple Output, MIMO technology can be broadly classified into two categories: transmit/receive diversity and spatial multiplexing. Traditional multi-antenna was used to increase the degree of diversity to overcome channel fading, the signal with the same information through different paths have been sent in the receiver-side data symbols can be multiple independent copies of the decline, which was higher reception reliability. This technology often have to combine multi-antenna technology, and multi-antenna technology in mobile communication has been widely studied.)

多输入多输出系统不同收发天线对系统性能的影响(Multiple-input multiple-output system transceiver antenna different impact on system performance)

说明：  对输入信号进行量化，n为你想要的量化级数；可输出量化前后信噪比，量化后信号，和量化后的二进制序列(Quantize the input signal, n is the quantizing series you want; output the signal-to-noise ratio before and after quantizing, the quantized signal, and the quantized binary sequence)

ofdm最大似然估计 加入循环前缀 进行信道估计同步算法(ofdm Maximum Likelihood Estimation of cyclic prefix for channel estimation synchronization algorithm)

OWDM simulation QAM 16/64