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Beam-splitter-by-PCF-by-FDTD
this is a paper for pcf beam splitter!
- 2013-10-08 09:47:11下载
- 积分：1
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ADIBEAM
ADIBEAM
Abstract—the increase in navigation accuracy demanded by
EGNOS and Galileo and their future evolution encourages the
study and design of advance receiver architectures. In that
direction, the ADIBEAM project focuses on the design of high
accuracy ground stations, specifically GNSS Reference Stations, in
order to improve its robustness in front of multipath and
interference errors with the goal of achieving centimeter level
tracking accuracy. The adoption of antenna arrays and digital
beamforming at the ground reference station receivers is one of
the most promising approaches to cope with errors induced by
multipath and interference.
- 2012-01-23 23:20:55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
说明： 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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localizationinwsn-131215194931-phpapp01.pdf
TDOA algorithm presentation
- 2017-12-06 03:18:25下载
- 积分：1
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cooperative-communication
协作通信中的基础仿真，含有pdf格式文章(cooperative communication Introduction and Simulation)
- 2011-06-07 21:00:24下载
- 积分：1
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time_frequency
这是一篇现代通信原理课程的作业报告.题目为几种时频分析方法比较及应用.详细介绍了短时傅里叶变换、小波变换、魏格纳—威利分布和Cohen类时频分布这4种典型时频分析方法,并作了比较(This is a modern communication Principle operating report. Entitled Comparison of several time-frequency analysis and 应用. 详细 Jieshao the short time Fourier transform, wavelet transform, Wigner- Willie distribution and frequency distribution of Cohen Lei This four kinds of typical time-frequency analysis method, and compared)
- 2010-07-12 22:12:25下载
- 积分：1
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Butterworth-MITRES_6_007S11_lec24
Butterworth filter design for digital signal processing
- 2012-11-15 03:00:54下载
- 积分：1
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aoc_song
The future satellite communication systems are re-
quired to support the higher transmission data rate
for providing the multimedia services by employing
the e铿僣ient modulation method such as multi-level
QAM.
- 2009-03-13 17:44:21下载
- 积分：1
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ZT-Series-ZigBee
zigbee的一些基础知识，引脚及其相关协议等(basic zigbee )
- 2011-12-23 17:20:13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
