[1] Chen Huamin, Chen Ming,. Downlink BER performance analysis of distributed antenna systemsover shadowed Rayleigh fading channels [J]. Journal of Southeast University (English Edition), 2009, 25 (2): 167-170. [doi:10.3969/j.issn.1003-7985.2009.02.005]
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Downlink BER performance analysis of distributed antenna systemsover shadowed Rayleigh fading channels(
)
阴影Rayleigh衰落信道条件下 分布式天线系统的下行BER性能分析
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 25
- Issue:
- 2009 2
- Page:
- 167-170
- Research Field:
- Information and Communication Engineering
- Publishing date:
- 2009-06-30
Info
- Title:
- Downlink BER performance analysis of distributed antenna systemsover shadowed Rayleigh fading channels
- 阴影Rayleigh衰落信道条件下 分布式天线系统的下行BER性能分析
- Author(s):
- Chen Huamin, Chen Ming
- National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
- Keywords:
- distributed antenna system; bit error ratio; shadowed Rayleigh fading; log-normal; gamma-log-normal
- PACS:
- TN929.5
- DOI:
- 10.3969/j.issn.1003-7985.2009.02.005
- Abstract:
- Due to the complexity of the composite fading channel, a new simplified channel model is proposed to analyze the bit error ratio(BER)performance of the distributed antenna system(DAS).First, instead of the gamma-log-normal distribution, the log-normal distribution is applied to describe the output signal to noise ratio(SNR)after maximal ratio combining(MRC)at the receiver.Then, assuming that the channel state information(CSI)is available to the transmitter, by employing the Gauss-Hermite integral, an approximate analytical expression of the BER is derived for the downlink of the DAS with antenna selective transmission and MRC.Finally, the results of a Monte Carlo simulation show that the analytical results match the simulation results.Therefore, it can be concluded that the proposed approximate channel model is effective and accurate, and the derived analytical expression can be used to evaluate the real system performance.
- 针对复合衰落信道的复杂性, 提出了一种简化的信道模型来研究分布式天线系统的误比特率性能.首先, 基于阴影Rayleigh衰落信道, 在接收端进行最大比合并, 并用对数正态分布替代复杂的伽玛-对数正态分布, 描述所得信噪比的随机特性.其次, 假设发送端已知信道状态信息, 推导了分布式天线系统基于天线选择发送的下行误比特率表达式, 表达式采用了Gauss-Hermite近似以便于理论计算.最后, 仿真结果显示理论值和仿真值能够很好地吻合.因此, 可以认为所提出的简化模型是有效的和精确的, 同时也表明所推导的解析表达式能够用于精确评估系统的实际性能.
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Memo
- Memo:
-
Biographies: Chen Huamin(1983—), female, graduate;Chen Ming(corresponding author), male, doctor, professor, chenming@seu.edu.cn.
Foundation items: The National High Technology Research and Development Program of China(863 Program)(No.2007AA01Z207, 2007AA01Z268), Program for New Century Excellent Talents in University, Research Fund of National Mobile Communications Research Laboratory of Southeast University(No.2008A06).
Citation: Chen Huamin, Chen Ming.Downlink BER performance analysis of distributed antenna systems over shadowed Rayleigh fading channels[J].Journal of Southeast University(English Edition), 2009, 25(2):167-170.