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针对MIMO-OFDM系统中期望最大化(EM)信道估计算法在高信噪比(SNR)下带来的误差地板(EF)现象,且OFDM符号的数据传输效率随发射天线数的增加而明显降低,提出一种改进的高效EM信道估计算法。该算法首先引入一种准确的等效信号模型并推导出一种修正的EM算法,改善了EM算法在高SNR下的性能 在多个OFDM间利用相位正交导频序列来提高数据传输效率,同时进行联合信道估计以提高估计性能。仿真实验验证了所提算法具有更高的信道估计性能和更高的数据传输效率。(For multiple-input multiple-output with orthogonal frequency division multiplexing(MIMO-OFDM) systems,the error floor(EF) phenomenon at high signal noise rate(SNR) was induced by the expectation maximum(EM) channel estimation algorithm.In addition,the data transmission efficiency was declined obviously with the increasing number of transmit antennas.According to these problems,an improved and efficient EM channel estimation algorithm was pro-posed.Firstly,an accurate and equivalent signal model was introduc...)
- 2011-09-05 15:20:54下载
- 积分：1
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信噪比-误比特率曲线
说明： 使用Labview平台计算误码率，绘制误码率曲线，用于通信系统仿真。(Calculate the bit error rate and reconstruct the bit error rate curve)
- 2021-05-17 09:30:02下载
- 积分：1
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423132
OFDM channel estimation DFT single document, ultra-detailed, very helpful for understanding OFDM, but also helpful for understanding how to simulate channel estimation
- 2019-03-26 19:22:38下载
- 积分：1
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NOMA concept
说明： power allocation in NOMA
- 2021-04-17 13:58:52下载
- 积分：1
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FOCS
《光通信系统》的电子文档，对于学习光纤通信的人有很大的帮助。(The optical communication system, "the electronic document, for learning optical fiber has a lot of help.)
- 2011-09-20 16:41:51下载
- 积分：1
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mimo
MIMO系统 容量和天线数目关系 通过仿真可以看出 容量随着天线数目的变化(Antenna MIMO system capacity and the number of relations can be seen through the simulation volume with changes in the number of antennas)
- 2021-05-07 04:28:36下载
- 积分：1
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analysisofIEEE802channel
分析了 IEEE 802.15.4a的信道模型，并分析了现今测距的方法：CHAN与TAYLOR等，并在此基础上做了改进(Analysised the channel of IEEE 802.15.4a,and analysised some methods for TDOA and TOA . )
- 2009-11-27 22:26:07下载
- 积分：1
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Papierict2009
This paper presents a performance of the UWB
system in a time hopping binary pulse position ultra-wideband modulation scheme (TH BPPM-UWB) in the presence of an AWGN channel.
- 2010-05-27 17:28:11下载
- 积分：1
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mccdma
MC-CDMA各类多用户检测算法，比较全面，希望对大家有帮助(A program of MC-CDMA)
- 2011-12-16 21:21:45下载
- 积分：1
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matlab simulation for radar systems design
matlab simulation for radar systems design
- 2018-08-19 10:03:08下载
- 积分：1
