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BEIDOUWeixing
北斗卫星接口文件
北斗卫星导航系统
空间信号接口控制文件
(测试版)
(Beidou satellite interface file Beidou satellite navigation system space signal Interface Control Document (Beta))
- 2012-11-04 12:16:07下载
- 积分:1
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LTE-Ad
分析仿真了LTE-Advanced系统部署Pico后的小区间干扰协调技术.本文针对在LTE—Advanced系统中部署Pico后恶劣的干扰条件进行了详细的分析,并重点讨论了三种可以有效兼容R8/R9终端的增强型ICIC技术。(Analysis and simulation of LTE-Advanced systems deploy Pico Inter-cell interference coordination techniques for LTE-Advanced systems deploy Pico bad interference conditions, carried out a detailed analysis, and focused on the three can be effectively compatible with R8/R9enhanced terminal ICIC technology.)
- 2012-03-04 16:54:47下载
- 积分:1
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J939介绍
说明: 从网上找的SAE J1939 介绍的总结,主要是应用层介绍,包括PGN和SPN的计算及介绍。(Summary and Introduction of J1939.)
- 2020-05-11 17:25:58下载
- 积分:1
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num
通信系统中常用的号码分析文档,非常实用,且好理解。(Communication system frequently used phone numbers of documents, very practical, and easy to understand.)
- 2020-11-20 21:39:37下载
- 积分:1
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05441004
Multiple input multiple output techniques combined
with orthogonal frequency division multiplexing (MIMO-OFDM)
provide a promising approach for wireless systems. However, a
serious drawback of the OFDM system is the high peak-toaverage
power ratio (PAPR), which may severely affect the
power efficiency of RF power amplifiers. In this paper, we
propose a simple method to reduce the PAPR of MIMO-OFDM
signals based on the use of unused subcarriers. Instead of
processing the signals at each transmitter separately, a peak
cancelling signal is generated at one antenna and is then applied
to all the others with only simple modifications. Simulation has
shown that a minimum 2 dB reduction in PAPR can be achieved
for all transmit signals using this approach. As the signal
processing is nearly all done at a single transmitter, repetition of
the operations at each transmitter is avoided, and therefore the
overall cost of the system can be significantly reduced.
- 2011-11-05 01:46:42下载
- 积分:1
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CMPP3.0
中国移动通信互联短信网关接口协议CMPP3(CMPP3)
- 2010-02-03 14:24:17下载
- 积分:1
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target-tracking-in-three-dimensional
介绍了三点垂直线阵被动定位的原理. 结合矢量水听器测得的方位角和高低角及到达
阵元间的时延差, 建立了三维坐标下的状态方程和观测方程.运用扩展卡尔曼滤波算法, 研究了该系统的目标运动分析问题. 通过蒙特卡洛模拟仿真试验, 结果表明上述方法具有较高的定位性能,有较强的使用价值.
(Introduced three vertical linear array passive location principle of vector hydrophone. Combining the measured azimuth angle and pitch angle and arrival time delay difference between array elements, establish the three-dimensional coordinates of the state equation and observation equation. Using the extended Calman filter algorithm, on the target motion analysis by Monte Carlo simulation. Test, results show that the method has high positioning performance, has the strong use value.)
- 2012-03-09 15:34:30下载
- 积分:1
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Spread-spectrum
This document describes about the digital modulation techniques especially about spread spectrum.
- 2012-07-06 15:46:04下载
- 积分:1
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ultrasonic
ultrasonic curcit
amjadmftah@hotmail.com
- 2010-11-12 10:21:08下载
- 积分:1
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USBTORS232Converter
Z-TEK USB转RS232串口驱动文件,网上很难找到,今天我吧它贴出来,希望能帮助大家!(Z-TEK USB TO RS232 Converter)
- 2020-06-26 01:00:02下载
- 积分:1