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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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duopulebuchang
进行信号积累时，有的信号存在多普勒频率，不利于累加。该程序可完成对信号多谱勒频率的补偿。(Signal accumulation, some signal Doppler frequency, is not conducive to the accumulation. The program can be complete compensation of the signal Doppler frequency.)
- 2012-10-30 14:03:45下载
- 积分：1
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TC35
西门子GPRS 调制解调器编程参考手册，型号TC35(Siemens GPRS modem programming reference manual, model TC35)
- 2012-07-15 12:19:36下载
- 积分：1
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D2XXNotify-Application
这个例子显示了如何使用的Windows RegisterDeviceNotification功能，收到WM_DEVICECHANGE消息(This example shows how to use the Windows RegisterDeviceNotification function to receive WM_DEVICECHANGE messages)
- 2012-05-07 23:31:08下载
- 积分：1
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BlueTest
界面使用C#开发，底层使用C++开发的无线电脑锁软件。采用蓝牙通信协议控制。(Interface using C# development, the underlying wireless computer lock software use C++ developed. Bluetooth communication protocol control.)
- 2012-06-07 14:58:10下载
- 积分：1
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MIMO-channel-and-simulation-testing
对于MIMO无线信道建模和仿真测试中遇到的一些常见问题予以了详细解答，其中详细介绍了空间相关性的那部分。(MIMO wireless channel modeling and simulation for the test to be some common problems encountered in the detailed answers, which details the spatial correlation part.)
- 2021-04-17 14:48:52下载
- 积分：1
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Quadrature-amplitude-modulation---Wikipedia--the-
defination quadrature amplitude modulation
- 2013-02-26 20:48:25下载
- 积分：1
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Cqiukarchy_dynami
基于windows mobile操作系统,关于操作task tree部分的实例程序,()
- 2018-06-11 16:57:22下载
- 积分：1
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QAM
说明： 16QAM调制解调，包含QAM的调制解调Matlab程序(16QAM modem, including QAM modem matlab program)
- 2021-03-26 16:49:12下载
- 积分：1
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66430717
产生一些常见的离散时间信号完成两个有限长序列的线性卷积和,用滑动平均滤波器对混有噪声的信号进行滤波()
- 2017-12-26 09:04:24下载
- 积分：1
