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spectralnull
a document wich explain spectral null codes
- 2012-06-16 00:18:48下载
- 积分：1
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matlab_exercise_6_081212
Matlab in German Course
- 2009-11-11 08:04:29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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Interview-Collection
收集了华为五轮面试的经验，还有中兴通信的面试宝典，非常不错的资料 (Huawei five interviews to collect experience, and ZTE interview book, very good information)
- 2011-06-18 14:30:48下载
- 积分：1
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InterferometricFiber-OpticSensor
该论文针对光纤传感系统，深入研究随机信号的互相关函数和基于AR模型的功率谱估计，设计出具有事件发生检测功能的传感器信号处理算法。(The paper for the fiber optic sensor system, in-depth study of the cross-correlation function of random signal-based AR model spectrum estimation, designed with the incident detection sensor signal processing algorithms.)
- 2010-08-30 21:49:29下载
- 积分：1
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城市公共交通IC卡技术规范
说明： 交通部发行的城市公共交通IC卡技术规范，用于CPU卡规范(Technical Specification of IC Card for Urban Public Transportation issued by the Ministry of Communications for CPU Card Specification)
- 2020-06-24 20:20:01下载
- 积分：1
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extended_reciever
Bit Error Rate analysis of an Extended Receiver for Rectangular PAM.
The performance of a digital communication system in the presence of additive white Gaussian noise (AWGN) can be assessed by the measurement of the bit error rate (BER). The Simulink model provided is a rectangular polar pulse amplitude modulation (PAM) baseband system with an AWGN channel and an extended sample and hold receiver with a low pass filter.
An extended receiver has an odd number of sample and hold circuits. What remains to be answered is if such a receiver would provide a more desirable BER than that of a simple S/H receiver.
- 2010-02-01 03:26:22下载
- 积分：1
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RFC826
中文RFC文档，不用翻译，对大家学习很有帮助！(Chinese RFC documents, without translation, the right to study very helpful!)
- 2005-04-12 13:23:37下载
- 积分：1
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vanetmatlab
说明： artificial transportation system and internet of vehicles, internet of things, vanet, intelligent transportation.
- 2020-06-24 21:40:01下载
- 积分：1
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RS485
说明： 阐述了RS-485总线规范，描述了影响RS-485总线通信速率和通信可靠性的三个因素，同时提出
了相应的解决方法并讨论了总线负载能力和传输距离之间的具体关系。 (Described the RS-485 bus specification, describes the impact of RS-485 bus communication speed and communication reliability of the three factors, while the corresponding solutions presented and discussed the bus load capacity and the specific relationship between the transmission distance.)
- 2010-04-04 11:51:46下载
- 积分：1
