Channel Selection in Virtual MIMO Wireless Sensor Networks

2009 ◽  
Vol 58 (5) ◽  
pp. 2249-2257 ◽  
Author(s):  
Jing Liang ◽  
Qilian Liang
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Channel Selection ◽  
Wireless Sensor ◽  
Virtual Mimo

Data Gathering in Correlated Wireless Sensor Networks with Cooperative Transmission Data Gathering in Correlated Wireless Sensor Networks with Cooperative Transmission

2012 ◽  
pp. 944-966
Author(s):  
Laxminarayana S. Pillutla ◽  
Vikram Krishnamurthy
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Correlation Coefficient ◽  
Data Gathering ◽  
Optimal Number ◽  
Cooperative Transmission ◽  
Wireless Sensor ◽  
Virtual Mimo ◽  
Constellation Size ◽  
Mimo Transmission

This chapter considers the problem of data gathering in correlated wireless sensor networks with distributed source coding (DSC), and virtual multiple input and multiple output (MIMO) based cooperative transmission. Using the concepts of super and sub modularity on a lattice, we analytically quantify as how the optimal constellation size, and optimal number of cooperating nodes, vary with respect to the correlation coefficient. In particular, we show that the optimal constellation size is an increasing function of the correlation coefficient. For the virtual MIMO transmission case, the optimal number of cooperating nodes is a decreasing function of the correlation coefficient. We also prove that in a virtual MIMO based transmission scheme, the optimal constellation size adopted by each cooperating node is a decreasing function of number of cooperating nodes. Also it is shown that, the optimal number of cooperating nodes is a decreasing function of the constellation size adopted by each cooperating node. We also study numerically that for short distance ranges, SISO transmission achieves better energy-mutual information (MI) tradeoff. However, for medium and large distance ranges, the virtual MIMO transmission achieves better energy-MI tradeoff.

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