The objective of this projectis to design, model and simulate an autocorrelation generator circuit using 4-bit LFSR. the register and LFSR will used D flip-flop and some gates. By the autocorrelation concept, there should be 2 same length vectors, for calculating the autocorrelation , we have to design the register for storing the original vector and the shifter for make time delay.
标签: autocorrelation objective generator projectis
上传时间: 2015-08-17
上传用户:ikemada
逻辑分析仪 PC发送到单片机的命令共7个字节: 第一字节是触发信号,每bit对应一路信号,1为高电平触发,0为低电平触发; 第二字节是触发有效信号,每bit对应一路信号,1为忽略,0为有效; 第三、四字节是采样时间,对应如下: 2us=0x0402,5us=0x0a02,10us=0x1402,10us=0x2802,50us=0x6402,100us=0xc802,200us=0x3203,500us=0x7d03,1ms=0xfa03,2ms=0x7d04,4ms=0xfa04,8ms=0x7d05,16ms=0xfa05; 第五、六字节是一样的,为预触发:8=0%,7=12.5%,6=25%,5=37.5%,4=50%,3=62.5%,2=75%,1=87.5% 第七字节为模式,0=普通模式;1=外部时钟,上升延;2=外部时钟,下降延;3=外部触发,上升延;4=外部触发,下降延;5=静态模式;6没有查到,不知道是什么;7为测试模式的二进制信号;8为测试模式的AA、55;9为测试模式的清零。
上传时间: 2013-12-12
上传用户:luke5347
Hard-decision decoding scheme Codeword length (n) : 31 symbols. Message length (k) : 19 symbols. Error correction capability (t) : 6 symbols One symbol represents 5 bit. Uses GF(2^5) with primitive polynomial p(x) = X^5 X^2 + 1 Generator polynomial, g(x) = a^15 a^21*X + a^6*X^2 + a^15*X^3 + a^25*X^4 + a^17*X^5 + a^18*X^6 + a^30*X^7 + a^20*X^8 + a^23*X^9 + a^27*X^10 + a^24*X^11 + X^12. Note: a = alpha, primitive element in GF(2^5) and a^i is root of g(x) for i = 19, 20, ..., 30. Uses Verilog description with synthesizable RTL modelling. Consists of 5 main blocks: SC (Syndrome Computation), KES (Key Equation Solver), CSEE (Chien Search and Error Evaluator), Controller and FIFO Register.
标签: symbols length Hard-decision Codeword
上传时间: 2014-07-08
上传用户:曹云鹏
由delphi实现的bt下载器示例程序,带全部源码和BT协议 包中文件说明: BTDemo.dpr, BTDemoF.pas, BTDemoF.dfm -- 一个简单的bt下载器,支持多个.torrent文件同时下载 btutils.pas -- 核心bt组件 DCP*.pas -- SHA算法源码(复制自DEC组件包) InetUtils.pas -- 提供Internet下载的函数库 SimpleSocks.pas -- socket组件(TCP) SortLists.pas -- 排序的List组件 ThreadTimer.pas -- 定时器与线程池 DelayLists.pas -- 一个延时5秒再释放Object的队列 FastShareMem.pas, MemPools.pas, ShareGlobals.inc -- 由ThreadTimer内部使用 Bit Torrent Specification.htm -- BT协议文档
上传时间: 2015-09-10
上传用户:lizhen9880
/*** *** *** *** *** *** *** *** *** *** *** *** **/ //**此映射表用来映射LED模块不译码时,显示的字符和必须输入的数据的关系 //**每段和对应比特位的关系见示意图 // g // --- --- // b | a |f | | <---显示0时点亮的段为gfedcb // --- // c | |e | | 那么写入数据为0x7e // --- --- // d // bit: 7 6 5 4 3 2 1 0 // 段位: g f e d c b a
上传时间: 2013-11-25
上传用户:
the c languge is used for the GPS field.The pogram is the PARITY CHECK ,which is one kind data of the GPS data .and it is used for correcting one bit error
上传时间: 2013-11-26
上传用户:xiaodu1124
sd2003芯片资料及源码,C51下的,可以直接使用,不是厂方提供的测试程序, 相应子程序: extern void ini_SD2003(void) extern bit mend_scl_SD2003(void) extern bit start_bit_SD2003(void) extern void stop_bit_SD2003(void) extern void ack_SD2003(void) extern void no_ack_SD2003(void) extern void mast_ack_SD2003(void) extern void write_8bit_SD2003(UCHAR ch) extern UCHAR Read_8bit_SD2003(void) extern void write_8bit_SD2003_R(UCHAR ch) extern UCHAR Read_8bit_SD2003_R(void) extern bit Readblock_SD2003(UCHAR ucommand,UCHAR *p) extern bit Writeblock_SD2003(UCHAR ucommand,UCHAR *p)
上传时间: 2015-09-14
上传用户:zl5712176
提高卫星通信信道传输效率的新途径本 文 结 合 V SAT卫星通信系统设计中涉及卫星通信传输技术极为重要的 信道编码与调制解调方式,探讨了各种新型的卫星信道编码与调制解调技术, 它们的原理及在卫星通信中的应用。在数字调制中,信号传输质量主要取决于 比特差错率BER (Bit Error Rate),因此要尽可能采用相同的每比特信号能量与 噪声功率谱密度比(Eb/N.)的条件下,BER低的调制方式,以节省卫星功率 另外频带利用率要尽可能的高,以节省宝贵的卫星频带。本文还对各种不同的 差错编码与调制技术进行了实验和详细的性能比较。
上传时间: 2015-09-16
上传用户:AbuGe
一个简单的SPI IP核,SPI Core Specifications 可以从说明文档中找到! The simple Serial Peripheral Interface core is an enhanced version of the Serial Peripheral Interface found on Motorola s M68HC11 family of CPUs. The Serial Peripheral Interface is a serial, synchronous communication protocol that requires a minimum of 3 wires. FEATURES: · Compatible with Motorola’s SPI specifications · Enhanced M68HC11 Serial Peripheral Interface · 4 entries deep read FIFO · 4 entries deep write FIFO · Interrupt generation after 1, 2, 3, or 4 transferred bytes · 8 bit WISHBONE RevB.3 Classic interface · Operates from a wide range of input clock frequencies · Static synchronous design · Fully synthesizable
标签:
上传时间: 2015-09-17
上传用户:TRIFCT
This document describes the uIP TCP/IP stack. The uIP TCP/IP stack is an extremely small implementation of the TCP/IP protocol suite intended for embedded systems running low-end 8 or 16-bit microcon-trollers. The code size and RAM requirements of uIP is an order of magnitude smaller than other generic TCP/IP stacks today.
标签: stack implementat TCP describes
上传时间: 2015-09-18
上传用户:zsjinju