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Riku Jantti Telecommunication Engineering at University of Vaasa, Finland Seong-Lyun Kim Electrical and Electronic Engineering, Yonsei University, Seoul,

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Presentation on theme: "Riku Jantti Telecommunication Engineering at University of Vaasa, Finland Seong-Lyun Kim Electrical and Electronic Engineering, Yonsei University, Seoul,"— Presentation transcript:

1 Riku Jantti Telecommunication Engineering at University of Vaasa, Finland Seong-Lyun Kim Electrical and Electronic Engineering, Yonsei University, Seoul, Korea. IEEE TWC, Vol. 5, No. 5, May 2006

2 + Introduction + Network model + Iterative algorithm for maximum lifetime routing problem + Numerical Example + Conclusion

3 + Wireless ad hoc network – Low battery capacity – High data rate – Low interference + Previous works – Power control scheme works on a single link – Rate adapt scheme works on a single link

4 + Carrier-to-interference + Function of Rate

5 + Probability of transmission φ ij is defined on link(i,j) = Bit-energy-to-interference+noise-power-density

6 + Transmission Energy Allocation + Transmission Time and Power Allocation + Transmission Rate Allocation

7 For link(1,3) Node 1: 1) Transmission Energy Allocation a. Chose a suitable power 2) Transmission Time and Power Allocation a. Find the network life time 3) Transmission Rate Allocation a. Based on 1) and 2) to select the transmission rate p1 p4

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11 Ps = 50mW Pt = 800mW Pr = 400mW W = 1 MHz Γ (p) = 5 dbm

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17 + Joint routing and Rate allocation – Maximizing the network life time + Increase transmission power – Lower interference – Higher data rate – For other nodes, the energy consumption is lower

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