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摘要:
This paper presents the evaluation of the “capacity to the total energy consumption per bit ratio” of multiple antennas systems with distributed fashion. We propose an adequate geometric channel modeling for the wireless communication system which operates in indoor propagation environment with scatterers. The channel model is derived in function of both the line of sight (LOS) and the non line of sight (NLOS) components. The aim of this paper is to study the limits in the gain concerning the capacity to the total energy consumption ratio when additional antennas are implemented in the communication system. To do so, we have evaluated by simulations both the capacity and the total energy consumption per bit. Then, we have determined the capacity to the total energy consumption ratio. Finally, the computational capacity to the total energy ratio is obtained for different system configurations. We have shown that the gain in capacity increases with the number of antennas but it stills be limited by the total energy consumption. The limits for increasing the number of transmit antennas are determined in function of the separation distances between the transmitter and the receiver sides of the communication system. Optimal power allocation strategy via water-filling algorithm has been carried out for evaluating the capacity to energy ratio. We find by simulation that optimal power allocation brings a gain in the addressed metric reaching a level of about 1.7 at transmit signal to noise ratio of 8 dB if comparing to the case when transmit energy is equally split among transmit antennas.
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篇名 MIMO Spectral Efficiency over Energy Consumption Requirements: Application to WSNs
来源期刊 通讯、网络与系统学国际期刊(英文) 学科 工学
关键词 MIMO Capacity ENERGY Efficiency Capacity to the Total ENERGY CONSUMPTION RATIO WIRELESS Sensor Networks
年,卷(期) 2012,(2) 所属期刊栏目
研究方向 页码范围 121-129
页数 9页 分类号 TN92
字数 语种
DOI
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节点文献
MIMO
Capacity
ENERGY
Efficiency
Capacity
to
the
Total
ENERGY
CONSUMPTION
RATIO
WIRELESS
Sensor
Networks
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研究分支
研究去脉
引文网络交叉学科
相关学者/机构
期刊影响力
通讯、网络与系统学国际期刊(英文)
月刊
1913-3715
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
763
总下载数(次)
1
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0
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