Location:
Search - timing error
Search list
Description: linux下用C语言写的聊天程序！/*BUG and NOTE:
Not join protect to Shared Memory Segments,example Semaphore Arrays.
Not check the parameters validity.
When transmit may be error.
If the client program no right exit,others cannot know,the service program shouldbe check the client program whether exist timing.
The program when exit(), it do not delete the Shared Memory Segments,you maybe use atexit() but the program have some processes.
When one process is exit(),others is continue.
The service program s action is few.
And so on. */
Platform: |
Size: 5177 |
Author: 吴兴圆 |
Hits:
Description: a bpsk_qpsk timing-error detector for sampled receivers
Platform: |
Size: 636928 |
Author: Live |
Hits:
Description: 重点研究了全数字QAM接收机中的两个关键技术——符号同步和信道盲均衡。研究Gardner定时误差检测算法，盲均衡方面，重点研究了CMA及其改进算法，采用MMA算法和DD-LMS算法联合均衡-Focuses on the all-digital QAM receiver in the two key technologies- the symbol synchronization and channel blind equalization. Research Gardner timing error detection algorithm, blind equalization, the focus of the CMA and its improved algorithm, using the MMA algorithm and the DD-LMS algorithm for joint equalization
Platform: |
Size: 2300928 |
Author: 丁建 |
Hits:
Description: A timing error detector for Communication systems with simulink.
# Required versions Matlab 5.2.1, Simulink 2.2.1
# File description
1. ti_det1.m (simulink version 5.2.1)
An s-function to be used for timing detector. For detailed information, Refer to the following paper,K.H. Mueller and M. Mueller,
Timing recovery in digital synchronous data receivers,
IEEE Trans. Comun., vol COM-24, no. 5, May 1976.
2. m_delay3.m (related m-file)
An s-function operating as sample and hold with clock port.
3. test1.mdl
A timing recovery system to test the timing detector.
-A timing error detector for Communication systems with simulink.
# Required versions Matlab 5.2.1, Simulink 2.2.1
# File description
1. ti_det1.m (simulink version 5.2.1)
An s-function to be used for timing detector. For detailed information, Refer to the following paper,K.H. Mueller and M. Mueller,
Timing recovery in digital synchronous data receivers,
IEEE Trans. Comun., vol COM-24, no. 5, May 1976.
2. m_delay3.m (related m-file)
An s-function operating as sample and hold with clock port.
3. test1.mdl
A timing recovery system to test the timing detector.
Platform: |
Size: 156672 |
Author: juyayayo |
Hits:
Description: 单载波定时同步经典程序，采用gardner定时误差检测，以及内插滤波器-Single-carrier timing synchronization classic program, gardner timing error detection, and the interpolation filter
Platform: |
Size: 2048 |
Author: shangchunjie |
Hits:
Description: 实现IIC 时序错误检测功能，当出现协议违例程序能自动报错。-IIC timing error detection function automatically when a protocol violation error.
Platform: |
Size: 1024 |
Author: okhhs |
Hits:
Description: This paper presents the simulation performance of the all-digital symbol timing recovery using the Gardner Timing Error Detector over π/4-DQPSK modulation. The open loop statistics, the S-curve and the normalized timing error variance, were investigated to show the stable tracking performance of the system. The symbol timing recovery has a second order loop transfer function, which was able to track down phase, and frequency offsets. Modulation was observed to have a performance of 2 dB lower from the theoretical BER curve.
Platform: |
Size: 276480 |
Author: joel vilca |
Hits:
Description: In a series of papers in recent years new
structures for coherent M-PSK (M-ary Phase Shift Keying)
receivers were suggested. These include structures for carrier
phase detectors for the carrier PLL (Phase Lock Loop),
carrier PLL lock detectors, symbol timing error detectors,
symbol synchronization PLL lock detectors, carrier and
symbol PLL loop filters, and SNR (Signal to Noise Ratio)
estimators
Platform: |
Size: 451584 |
Author: lala |
Hits:
Description: 该例程为数码管显示可调且可定时钟表，注意晶振需为11.0592M。
若为其他数值晶振，请合理改变TH0与TL0参数值，否则计时会有很大误差 。-The routine for the digital display is adjustable and can be timed watches, crystal need to pay attention to 11.0592M. For other values crystal, please change the TH0 and TL0 reasonable parameter values, otherwise there will be great timing error.
Platform: |
Size: 2048 |
Author: wly |
Hits:
Description: 一个载波恢复与符号定时的仿真。
载波恢复使用平方环，符号定时基于早迟门，发送信号采用BPSK调制方式，统计计算的误码率。-A carrier recovery and symbol timing simulation. Carrier recovery loop using the square, the symbol timing based on early-late gate, sending a signal using BPSK modulation, bit error rate statistics calculations.
Platform: |
Size: 97280 |
Author: WatcherVC |
Hits:
Description: A simple algorithm for detection of timing error of a
synchronous, band-limited, BPSK or QPSK data stream is proposed. The
algorithm requires only two samples per symbol for its operation. One of
the two samples is also used for the symbol decision. Derivation of the s-
curve reveals a sinusoidal shape.-A simple algorithm for detection of timing error of a
synchronous, band-limited, BPSK or QPSK data stream is proposed. The
algorithm requires only two samples per symbol for its operation. One of
the two samples is also used for the symbol decision. Derivation of the s-
curve reveals a sinusoidal shape.
Platform: |
Size: 636928 |
Author: hamed |
Hits:
Description: SN8P2501B_RTC是经笔者验证，投入实际生产过的源代码，如果SN8P2501B_规格书RTC功能说明做出来RTC会掉周期，误差是0.5S的倍数，在绿色模式RTC唤醒，要查询T0中断标志，并且要等待16US才能清除中断标志，否则计时出错-SN8P2501B_RTC is verified by the author, put into actual production over the source code, if SN8P2501B_ Functional Description Specification RTC RTC to do it will be out period, the error is a multiple of 0.5S, and in green mode RTC wake, to query T0 interrupt flag, and to wait 16US to clear the interrupt flag, otherwise the timing error
Platform: |
Size: 3072 |
Author: 海豹哥 |
Hits:
Description: This a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery loop followed by a DD phase recovery loop. The transmitter?s symbol period is T and set to a value of 100 ms. The symbol period at the receiver is Tr. The model will produce six windows: Two constellation plots and two eye diagrams (for the real part only), at the output of the matched fi lters and after the recovery loops a plot of the phase error (output of the NCO) and a plot of the fractional timing error (used in the interpolator). The frequency off set at the receiver is denoted by deltaf. The model simulates the transmission of 8000 QPSK symbols.-This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery loop followed by a DD phase recovery loop. The transmitter?s symbol period is T and set to a value of 100 ms. The symbol period at the receiver is Tr. The model will produce six windows: Two constellation plots and two eye diagrams (for the real part only), at the output of the matched fi lters and after the recovery loops a plot of the phase error (output of the NCO) and a plot of the fractional timing error (used in the interpolator). The frequency off set at the receiver is denoted by deltaf. The model simulates the transmission of 8000 QPSK symbols.
Platform: |
Size: 41984 |
Author: Romarco |
Hits:
Description: 2010年数学建模D题源程序，输出包括母线图、仿真图、脉冲时序、误差分析。-2010 D mathematical modeling problem source, output includes bus diagram, simulation diagram, pulse timing, error analysis.
Platform: |
Size: 2048 |
Author: 阿斯顿 |
Hits:
Description: 用中小规模集成电路设计一个公用电话计时系统。通过本设计使其完成一下几项基本功能：每3分钟计时一次；显示通话次数，最多为99次；每次定时误差小于1秒；具有手动复位功能；具有声响提醒功能。-Small-scale integrated circuit design with a public telephone timing system. Through this design it is completed at several basic functions: timer once every 3 minutes display the number of calls, up to 99 times each time a timing error is less than 1 second with manual reset function with audible alerts.
Platform: |
Size: 105472 |
Author: 帅哥 |
Hits:
Description: to resampling the digital signal. It is also used to add timing error to simulate the communication channel. ppm
Platform: |
Size: 1024 |
Author: fkgong |
Hits:
Description: 数码秒表设计:开发板上4键从左至右为S1-S4，上电后，开始时显示 0.0 ；
利用S1按键后启动计时；S2按键后停止计时；S3按键后计时归零；最大计时
为9.9秒。计时误差小于0.2秒，显示稳定。
晶振频率：11.0592MHz -Digital stopwatch design: 4 key development board left to right S1-S4, after power is displayed at the beginning of 0.0
Start timing after use S1 button after S2 button to stop counting after S3 key time to zero the maximum timing
9.9 seconds. Timing error is less than 0.2 seconds, the display is stable.
Crystal frequency: 11.0592MHz
Platform: |
Size: 1024 |
Author: 张平华 |
Hits:
Description: 任务： 设计一个用于赛场的篮球计时计分器。
要求： 1、能记录整个赛程的比赛时间，并能随时实现暂停。
2、能随时刷新甲、乙两队在整个过程中的比分。
3、能调节节数，使时间回表。
4、比赛中24秒为例时，蜂鸣器能发出报警声。
5、通过指示灯指示上下半场。
6、当24秒需要回表时，能通过按键实现回表。
7、加分有误时可通过按键实现减分调整。
-Task: to design a basketball timing and scoring device used in the field.
Requirements: 1, can record the whole schedule of the game, and can be suspended at any time.
2, can always refresh a, B two teams in the whole process of the score.
3, can adjust the number of nodes, so that time back to the table.
24, 4 seconds in the game, for example, the buzzer can alarm sound.
5, through the indicator light on the second half.
24, when the need to return to the table 6 seconds, can be achieved through the key back to the table.
7, when the error can be reduced by adjusting the key.
Platform: |
Size: 1025024 |
Author: 天 |
Hits:
Description: 一个定时误差检测器的特性由其曲线来表征。误差检测灵敏度一般取误差检测器曲线在零定时误差附近的斜率。(The characteristics of a timing error detector is characterized by the curve. Error detection sensitivity generally take near zero timing error detector curve slope.)
Platform: |
Size: 1024 |
Author: 小黄a小黄蛋
|
Hits:
Description: 设计一个数字电子时钟能够准点报时并具有校时功能。
时钟功能: 采用数码管显示累计时间，以24小时为周期。
校时功能: 能快速校准“ 时”、“分”、“ 秒”的功能。
整时报时功能: 具体要求整点前鸣叫5 次低音( 500 Hz ) , 整点时再鸣叫一次高音(1 000 Hz左右) , 共鸣叫6 响, 两次鸣叫间隔0 .5 s。(选做)
计时准确: 每天计时误差不超过10 s。(The design of a digital electronic clock can report time on time and has the function of timing.
Clock function: use digital tube to display the accumulated time, 24 hours as the cycle.
Timing function: it can quickly calibrate the functions of "hour", "minute" and "second".
Timing function: it is specifically required to call 5 times of bass (500 Hz) before the whole point, another high tone (about 1000 Hz) at the whole point, 6 resonance calls, and the interval between two calls is 0.5 s. (optional)
Timing accuracy: the timing error shall not exceed 10 s every day.)
Platform: |
Size: 31744 |
Author: 啦啦啦111233 |
Hits: