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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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juanjimabiancheng
说明： matlab卷积码编译程序，有详细的中文注释，希望对你有所帮助。(Matlab convolutional code compiler, the Chinese have detailed notes, and I hope to help you.)
- 2021-04-10 19:18:58下载
- 积分：1
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cdlab
this file talk about network
- 2012-10-13 08:30:27下载
- 积分：1
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FPGAclk
fpga时钟，是入门的基础；希望对大家有帮助！(fpga clock, is the entry of the base want to help you!)
- 2009-11-08 16:40:26下载
- 积分：1
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Symotion_Overview
Symotion是一种用于运动控制的实时工业总线，基于10/100M以太网物理层，应用层使用canopen及精简协议。可应用于运动控制器，电机驱动器，PLC，编码器光栅尺与其它工业现场执行器互连。symotion总线提供安全、开放、低成本及高性能应用。(Symotion is a synchronous real-time FieldBus for Motion
control . Build on a 10/100M Ethernet physical layer , and
Canopen or reduced protocol Layer. interconnect between motion
controllers, Motor drives, I/O modules, encoder devices and other
actuators. Symotion provides Safety , Open , low cost and high
performance in all applications.)
- 2011-08-16 12:41:16下载
- 积分：1
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UDP
udp协议介绍 是一个无连接的协议，快速等(udp protocol described is a connectionless protocol, fast, etc.)
- 2011-07-30 22:02:17下载
- 积分：1
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波束形成程序
说明： 文件提供了通信中自适应波束形成的matlab程序，根据到达的来波方向，自适应的调节形成波束的主瓣方向，程序给出了自适应的过程和最后的波束图。(document provides communications adaptive beamforming of Matlab procedures, according to the arrival of wave direction, the regulation of adaptive beam forming the main valve direction, the procedure is the process of adaptive beamforming and the final map.)
- 2005-10-02 21:49:21下载
- 积分：1
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Filterbankbasedblindsignaseparationwithestimatedso
采用滤波器组，将盲分离与声源定位结合在一起。滤波器组中分别进行子带处理，并且在每个子带中进行声源定位，最后综合所有子带估计的方向得到多个声源的方位信息，同时将声源信息作为ICA分析的约束条件，可以在色噪声及多得到更好的盲分离效果。其优势在于用滤波器组进行多次的估计声源方向，再加以合适的权值均衡后即可得到更优的估计。(The use of filters will be blind source separation and sound localization together. Filter group were sub-band treatment, and in each sub-band in Sound Source Localization, and finally all the sub-band is estimated to be more than the direction of sound source location information, as well as sound source information as ICA analysis of the binding conditions, colored noise can be better and many of the blind source separation effect. Its advantage lies in a number of filter banks with estimated sound source direction, coupled with an appropriate balance weights can be obtained after the better estimate.)
- 2009-03-06 09:24:04下载
- 积分：1
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simulation
about simulation in zone routing protocol
- 2013-05-07 10:14:12下载
- 积分：1
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pcolor uigetfile
适用于MATLAB画三维彩图，可用于画多参数平面图。(It can be used for drawing three-dimensional pictures and multi parametric graphs with MATLAB.)
- 2017-12-06 13:57:10下载
- 积分：1
