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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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TUTORIALFORUWNETWORKCODINGUSINGOPNETANDmatlab
使用opnet与matlab实现网络编码，源码在说明文档中有下载地址(Using opnet realize network with matlab coding, source code in the description in the document have Download)
- 2009-11-16 17:27:04下载
- 积分：1
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CCSDS_LDPC
CCSDS推荐的LDPC编码方案，一系列参考标准，很好哦！(CCSDS recommended LDPC coding scheme, a series of reference standards, very good!)
- 2020-06-15 23:00:02下载
- 积分：1
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用VHDL语言在CPLD_FPGA上实现浮点运算
说明： 用VHDL语言在CPLD/FPGA上实现浮点运算的方法(in VHDL CPLD/FPGA achieve floating-point computation methods)
- 2005-12-23 13:05:42下载
- 积分：1
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4850
利用matlab GUI实现的串口编程例子，独立成分分析算法降低原始数据噪声，构成不同频率的调制信号。( Use serial programming examples matlab GUI implementation, Independent component analysis algorithm reduces the raw data noise, Constituting the modulated signals of different frequencies.)
- 2017-05-08 17:17:11下载
- 积分：1
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HART
HART协议解析，非常完整，定能加快研发进度。(HART agreements, some of the information, in the hope that everyone has to help)
- 2020-12-15 17:49:13下载
- 积分：1
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weixin_Protocol
web版微信协议分析。当前分析到登陆部分。举一反三，后续的拉取好友列表和发送消息等协议都好分析出来了。作者：孙强壮。(The web version of the micro-channel protocol analysis. Current analysis to the landing part. Giving top priority to, the subsequent pull friends list and send messages agreements out a good analysis.)
- 2012-09-11 23:46:01下载
- 积分：1
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BAYESIAN-HIGH-PRIORITY-REGION-GROWING-FOR-CHANGE-
BAYESIAN HIGH PRIORITY REGION GROWING FOR CHANGE
- 2011-12-18 23:07:51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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B-IFDMA
B-IFDMA pdf document
- 2010-01-19 18:19:32下载
- 积分：1
