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LDPC_BSN
随机方法构造的LDPC码,码长可变,无四环(random ldpc,code length can be changed)
- 2021-04-18 11:38:52下载
- 积分:1
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asd
航空航天通信技术一般采用模拟通信的频率调制和数字通信的移相键控调制方法。这有利于充分应用信道带宽和能源。频率调制是在一定程度上改变载波或副载波的频率来传输信息的调制方法。移相键控调制是利用载波或副载波的相位跳变来传输信息的调制方法。移相键控又分二相移相键控、四相移相键控和多相移相键控,其中以四相移相键控和八相移相键控调制方法的效率较高(Aerospace communications technology commonly used analog communication of frequency modulation and the digital communication phase shift keying modulation method. This is helpful for making full use of channel bandwidth and energy. Frequency modulation is changed to some extent carrier or subcarrier frequency to transmit information modulation method. Phase shift keying modulation is the use of carrier or subcarrier phase jump to transmit information modulation method. Phase shift keying and binary phase shift keying, four phase shift keying and multiple phase shift keying, of which four phase shift keying and eight phase shift keying modulation method of high efficiency
)
- 2011-07-13 11:21:08下载
- 积分:1
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mmu-meta1
Meta 1 MMU handling code.
- 2014-12-18 09:33:32下载
- 积分:1
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Stochastic-process-notes.pdf
信号的统计检测与估计理论---李道本
一本很好的教材。分别对信号的检测和估计做了详细描述(The statistics of the signal detection and estimation theory--- Li Tao, a good textbook. A detailed description of signal detection and estimation)
- 2012-07-03 17:01:00下载
- 积分:1
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城市公共交通IC卡技术规范
交通部发行的城市公共交通IC卡技术规范,用于CPU卡规范(Technical Specification of IC Card for Urban Public Transportation issued by the Ministry of Communications for CPU Card Specification)
- 2020-06-24 20:20:01下载
- 积分:1
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Stability-of-Time-Delay-Systems__Control_Engineer
a reference book about stability of time delay systems
- 2012-04-17 21:26:38下载
- 积分:1
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pcm
语音编码方案的选取对移动通信系统的通话质量、信道容量等有重要影响。本文讨论了TD-SCDMA系统中AMR语音编码的自适应机制,同时分析了AMR中代数码本线性预测(ACELP)算法及实现过程。该方案可以在一块TMS320C5510上实现。(The selection of voice coding schemes for mobile communication systems the quality of the call, such as channel capacity have had a significant impact. In this paper, TD-SCDMA System AMR Adaptive speech coding mechanism, at the same time analysis of AMR in the generation of Digital Linear Prediction (ACELP) algorithm and the realization of the process. The program can be achieved in a TMS320C5510.)
- 2009-04-27 22:26:09下载
- 积分:1
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FOCS
《光通信系统》的电子文档,对于学习光纤通信的人有很大的帮助。(The optical communication system, "the electronic document, for learning optical fiber has a lot of help.)
- 2011-09-20 16:41:51下载
- 积分:1
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gjlj
重点研究
了低信噪比﹑多径瑞利衰落信道条件下,基于高阶累积量的OFDM信号盲识别技
术。提出了利用奇数阶累积量区分OFDM信号与单载波信号的方法,并对基于三
阶和五阶累积量的算法进行了仿真分析。
(﹑ Focus on the low SNR multipath Rayleigh fading channel conditions, based on cumulant OFDM signal blind identification technology. Made a distinction between the use of odd-order cumulants single-carrier OFDM signal with the signal approach, and based on the cumulative amount of third-order and fifth-order algorithm for the simulation.)
- 2011-08-06 22:46:10下载
- 积分:1
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uCOSonTMS320F281x
uC OS_II在DSP芯片TMS320F281x上的移植(OS_II embedded DSP chip in the transplant TMS320F281x)
- 2007-03-12 17:24:53下载
- 积分:1