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opticalcommunication1
optical cummunication examples
- 2012-01-12 22:10:44下载
- 积分：1
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一种基于高阶累积量的数字调相信号识别方法
对当前通信信号中常用的数字调相信号BPSK、QPSK、1／4一QPSK、8PSK的调制识别问题，提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别，首先利用信号的四阶累积量特征对BPSK、QPSK和{1／4一QPSK、8PSK}信号进行识别，然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性，并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)
- 2020-06-21 09:40:02下载
- 积分：1
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08013826
Power Allocation for Underlay Device-to-Device
Communication over Multiple Channels
- 2017-12-20 18:04:50下载
- 积分：1
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Cognitive-Radio-Policy
Cognitive Radio - Securuty
- 2011-06-14 23:34:12下载
- 积分：1
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Semilogy_Plot
intelligent transportation system and internet of vehicles
- 2020-06-24 21:40:01下载
- 积分：1
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adaptive modulation and coding
adaptive modulation and coding
- 2020-06-27 04:00:01下载
- 积分：1
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qqxgn
分析了该信号的时域、频域、倒谱，循环谱等,包括广义互相关函数GCC时延估计，这个有中文注释，看得明白。( Analysis of the signal time domain, frequency domain, cepstrum, cyclic spectrum, etc. Including the generalized cross-correlation function GCC time delay estimation, The Chinese have a comment, understand it.)
- 2017-04-18 12:39:50下载
- 积分：1
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antenna-principle
关于天线原理的PPT。等同于教科书。很全。(PPT of antenna principle.Can be used as teaching book. A complete one.)
- 2012-10-29 01:32:50下载
- 积分：1
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Designing.a.Wireless.Network
This book is very nice for designing a wireless network which describes in details how the wireless systems are designed.
- 2012-01-31 18:40:25下载
- 积分：1
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Modbus_Protocol-RTU_C51_Program
Modbus协议及Modbus RTU的C51编程(Modbus RTU Modbus protocol and the C51 programming)
- 2011-08-23 17:20:33下载
- 积分：1
