[3G/4G/5G开发] 4.1-P2P
点对点通信，基本例程，供大家参考。zigbee.
Point to point communication, basic routines, for your reference. Zigbee. (2020-10-18, C/C++, 44KB, 下载0次)
[3G/4G/5G开发] _LDPC码的高效编译码实现技术研究
本文针对部分并行结构的准循环LDPC码译码器，提出了一种将译码准码字存储在信道信息和外信息存储块中的高效存储方法，该方法可减少译码器对存储资源的需求量，并降低了译码电路的布线复杂度；另外，本文通过分析 LDPC 码译码的循环迭代过程，一种变量节点处理单元和校验节点处理单元完全并行交替处理两数据帧的译码器结构，在该结构的基础上提出了一种动态的地址访问管理方法，设计得到的译码器能够在
FPGA 资源需求量不变的基础上将译码吞吐量提高约一倍；针对传统迭代次数固定的译码器设计方法，本文还给出了一种迭代次数可变的 LDPC 码译码器设计方法，该方法能够减少译码所需的总时钟周期数，适合实时性要求较高的译码器实现.
In this paper, an efficient storage method for quasi cyclic LDPC decoder with partially parallel structure is proposed, which stores the decoded quasi code words in channel information and external information storage blocks. This method can reduce the storage resource requirement of the decoder and reduce the wiring complexity of decoding circuit. In addition, this paper analyzes the LDPC code by analyzing the performance of the decoder In this paper, we propose a dynamic address access management method based on the structure. The decoder can be implemented in parallel with the variable node processing unit and the check node processing unit
In this paper, a LDPC decoder design method with variable iterations is proposed, which can reduce the total clock cycles required for decoding, and is suitable for decoder implementation with high real-time requirements . (2020-09-12, C/C++, 1561KB, 下载0次)
[3G/4G/5G开发] _LDPC编译码技术的研究与实现
LDPC 译码算法主要研究了基于概率测度的BP 译码算法、基于LLR 的BP 译码算法、归一化最小和译码算法等算法。最终的实现选择了适合 FPGA 硬件实现的归一化最小和译码算法。在实现结构方面，对 TPMP 和 TDMP 两种实现结构进行了仿真对比，最终选择了收敛速度快、迭代次数少的 TDMP 实现结构，即水平分层迭代结构。最终实现的译码器可以信噪比为 2.5d B 时，BER 可以达到10-6。另外，为了实现高速译码器的目标，译码器的实现过程中采用了乒乓操作、流水线结构、四个码字同时译码等结构来提高译码器的吞吐率。
LDPC decoding algorithm mainly studies BP decoding algorithm based on probability measure, BP decoding algorithm based on LLR, normalized minimum sum decoding algorithm and so on. Finally, the normalized minimum sum decoding algorithm suitable for FPGA hardware implementation is selected. In the aspect of implementation structure, tpmp and tdmp are simulated and compared. Finally, tdmp implementation structure with fast convergence speed and less iteration times is selected, that is horizontal layered iterative structure. The final decoder can achieve BER of 10-6 when SNR is 2.5dB. In addition, in order to achieve the goal of high-speed decoder, ping-pong operation, pipeline structure and simultaneous decoding of four codewords are used to improve the throughput of the decoder. (2020-09-12, C/C++, 2724KB, 下载5次)
[3G/4G/5G开发] _IEEE802.11ad标准中LDPC编译码的研究
首先，认识标准。从系统层面和物理层两方面介绍此标准，给出标准的发送端和接收端系统结构框图，重点描述标准中物理层的特征，总结出标准的重要特点和关键技术。
其次，研宄和实现两种编码器。根据标准中码矩阵的特点，设计一种高效的编码器，完成的实现。在此基础上提出一种新的编码结构一旋转码，对旋转编码器结构进行探究，完成它的仿真和实现。
First of all, recognize the standard. This paper introduces the standard from two aspects of system level and physical layer, gives the system structure diagram of sender and receiver, focuses on the characteristics of physical layer in the standard, and summarizes the important characteristics and key technologies of the standard.
Secondly, two kinds of encoders are studied and implemented. According to the characteristics of the standard code matrix, an efficient encoder is designed and implemented. On this basis, a new encoding structure, rotary code, is proposed. The structure of rotary encoder is explored, and its simulation and implementation are completed. (2020-09-12, C/C++, 11195KB, 下载1次)
[3G/4G/5G开发] optimal-beamforming-master
本文就多用户的传输波形进行介绍，并提出一些有用的建议。本包中附有代码。
This paper introduces the multiuser transmission waveform and puts forward some useful suggestions. There is code in this package. (2018-01-25, C/C++, 354KB, 下载3次)
[3G/4G/5G开发] leachrand
实现无线传感器网络leach协议。簇头随机分布在网络中，节点产生随机数，并判断是否大于阈值，如果大于阈值则作为簇头。每隔一定时间簇头选择一次。
Wireless sensor networks leach agreement. Cluster head randomly distributed in the network, the node generates a random number, and to determine whether greater than the threshold value, and if it is greater than the threshold as the cluster head. Intervals cluster head selection again. (2013-09-08, C/C++, 1327KB, 下载15次)
[3G/4G/5G开发] leachvsdeec
无线传感器网络中经典的LEACH分簇算法与其改进算法DEEC的代码。
The code of classic LEACH in wireless sensor network and its improved algorithm-DEEC. (2012-11-20, C/C++, 4KB, 下载16次)
[3G/4G/5G开发] Leach
tinyOS环境下的无线传感器网络leach协议
leach protocol for wireless sensor network (2012-01-18, C/C++, 493KB, 下载64次)
[3G/4G/5G开发] tinyOS-lzw
tinyOS下的无线传感器网络LZW压缩算法的实现
LZW compression algorithm implementation (2012-01-18, C/C++, 1KB, 下载9次)
[3G/4G/5G开发] wirelessnetwork
多目标软计算优化在无线传感器网络TDMA调度中的应用。在无线传感器网络环境下利用现在非常成熟的TDMA进行通信
wireless TDMA (2011-11-30, C/C++, 1601KB, 下载3次)
[3G/4G/5G开发] ofdm_channel_wide
ofdm，qpsk信道瑞利衰落仿真器C程序代码
OFDM，QPSK fading channel simulator (2011-04-11, C/C++, 4KB, 下载30次)
[3G/4G/5G开发] Wireorithm
无线传感器网络中路由选择算法的研究Wireless sensor
Wireless sensor networks routing algorithm (2011-03-02, C/C++, 282KB, 下载5次)
[3G/4G/5G开发] mediaplayer
基于BREW平台下的媒体播放器，对于初学者来说非常有帮助，值得一看
This is an programming on brew platform (2009-11-16, C/C++, 1954KB, 下载3次)
[3G/4G/5G开发] zigbeeDemoCoordApp
zigbee 协调器应用演示程序源代码。zigbee是轻量级无线网络协议，可用于基于小容量单片机的器件之间组网。
zigbee coordinator application demo program source code. zigbee wireless network protocols are lightweight, can be used for small capacity single-chip microcomputer-based device networking between. (2009-02-17, C/C++, 199KB, 下载47次)
[3G/4G/5G开发] cricket.tar
无线传感器网络中的节点定位算法。详见ReadMe文件。在TinyOS上实现的节点定位算法。
Wireless sensor network node localization algorithm. See ReadMe file. Achieved in the TinyOS node localization algorithm. (2008-09-25, C/C++, 96KB, 下载133次)
[3G/4G/5G开发] BT-EVBRangeDemoRX
一个无线传感器网络SMAC的接收源码程序,希望对大家有帮助
A wireless sensor network receivers SMAC source program, in the hope that everyone has to help (2008-08-27, C/C++, 526KB, 下载16次)
[3G/4G/5G开发] cbrp_in_ns2
在ns2中实现了cbrp协议，对于无线传感器网络中cbrp协议的改进有很好的借鉴意义
Ns2 achieved in cbrp agreement, for wireless sensor networks to improve cbrp agreement has a very good reference (2008-08-22, C/C++, 85KB, 下载88次)
[3G/4G/5G开发] aodv
用于无线传感器网络按需距离向量路由协议仿真的aodv代码，具有很大的参考价值 (2008-07-07, C/C++, 10KB, 下载52次)
http://www.pudn.com/Download/item/id/505665.html[3G/4G/5G开发] wuxian
无线传感器，中科院，关于温度传感器的源码
Wireless sensors, the Chinese Academy of Sciences, on the temperature sensor source (2008-06-30, C/C++, 626KB, 下载17次)
[3G/4G/5G开发] MpZBeeV1.0-3.8
无线协议zigbee协议栈源码，通过单片机以及PHY层的无线收发器，实现PAN通讯
agreement zigbee wireless protocol stack source, SCM and PHY layer of wireless transmitters, PAN Communications achieve (2007-05-30, C/C++, 5929KB, 下载170次)